Release Notes for DSM

(2025-02-13)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

What's New

1. Added support for verifying LDAP server certificates when joining a directory. The following limitations apply:
   • Certificate verification for C2 Identity Edge Server is not supported.
   • This configuration cannot be backed up in DSM system configuration backup or Hyper Backup Entire System Backup.
2. Added support for Synology Office Suite APIs, encompassing Synology Drive, Office (Spreadsheet), MailPlus, and Calendar. With RESTful API and Webhook capabilities, you can enable secure integrations and automate workflows. Ensure the following package versions are updated to access these features:
   • Synology Drive Server 3.5.2
   • Synology MailPlus 3.3.1
   • Synology Calendar 2.5.3

Fixed Issues

1. Fixed a security vulnerabilities (Synology-SA-25:01).
2. Fixed a security vulnerabilities (Synology-SA-25:03).

(2024-11-26)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.
3. To enhance product security, the following packages will require a manual update after this release. Please go to the Package Center and click Repair to install the latest versions:
   • Synology Drive Server 3.5.1-26102
     • Note: After repairing Synology Drive Server, Synology Office will not auto-enable. Please go to Package Center > Synology Office, and click Run.
   • Replication Service 1.3.0-0423

Fixed Issues

1. Minor bug fixes.

(2024-11-05)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-24:20).
2. Fixed multiple security vulnerabilities (Synology-SA-24:27).

(2024-09-11)

Important Note

1. After installing this update, you will not be able to downgrade to a previous DSM version.
2. This update will restart your Synology NAS.
3. For the models below, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • FS Series: FS3017, FS2017, FS1018
   • XS Series: RS18016xs+, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII, DS3018xs
   • Plus Series: RS2416RP+, RS2416+, DS916+, DS716+II, DS716+, DS216+II, DS216+, DS1817+, DS1517+, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS218+, RS1219+
   • Value Series: DS416, DS416play, DS216, DS216play, DS116, RS816, DS1817, DS1517, RS217, DS418play
   • J Series: DS416slim, DS416j, DS216j, DS418j, DS218j, DS419slim, DS119j
4. Starting from this version, the processing of media files using HEVC (H.265), AVC (H.264), and VC-1 codecs will be transitioned from the server to end devices to reduce unnecessary resource usage on the system and enhance system efficiency. These codecs are widespread on end devices such as smartphones, tablets, computers, and smart TVs. If the end device does not support the required codecs, the use of media files may be limited. Refer to this article for workarounds. In addition, please note the following exceptions:
   • Surveillance Station on DSM will continue to support server-side processing of AVC (H.264) streams, see the release notes.
   • Deep Video Analytics (DVA) series models and VisualStation clients will retain support for AVC (H.264) and HEVC (H.265) codecs.
5. To ensure package compatibility, Advanced Media Extensions (AME), File Station, Media Server, Surveillance Station, Synology Drive, Universal Search, Synology Photos and Snapshot Replication will automatically update to the latest version.
6. Video Station is not available on DSM 7.2.2. Refer to this article for workarounds to stream videos to end devices.
7. Updated Storage Manager to 1.0.0-00502 to fix issues. For more information, see the release notes.

Compatibility & Installation

1. The following third-party packages are currently incompatible with DSM 7.2.2. Compatible package versions will be released in the future, and this list will be updated accordingly:
   • BRAVIA Signage
   • TeamViewer

What's New

1. Added support for selecting whether to verify response or assertion signatures for SAML SSO clients.
2. Supports customization of package installation, upgrade, and uninstallation wizards for third-party package developers. Learn more

Fixed Issues

1. Enhanced protection against deletion of immutable snapshots.
2. Enhanced file system error recoverability.
3. Fixed an issue where backing up WriteOnce shared folders in Hyper Backup might occupy extra space.
4. Enhanced the performance of Thick Provisioned LUNs when the volume is nearly full.
5. Enhanced file search performance when there are a large number of files with the same name.
6. Fixed an issue where restarting the system during an entire system backup could prevent volumes from mounting properly.
7. Fixed an issue where scheduled tasks of emptying recycle bins might fail to delete folders only containing the "desktop.ini" file.
8. Fixed an issue where triggering Adaptive MFA or entering incorrect account credentials might cause the auto block function to count login attempts abnormally.
9. Fixed an issue where users might not be able to set up OTP for login.
10. Fixed an issue where uploading IdP metadata might fail when setting up SAML SSO clients.
11. Fixed an issue where users might not return to DS cam or DS finder after using OIDC SSO login.
12. Fixed an issue where users might not receive emails with emergency codes when using 2FA for DSM login.
13. Fixed an issue where data synchronization might fail when creating backup or replication tasks to a remote target server via Snapshot Replication, Hyper Backup, or other packages.
14. Fixed an issue where login might fail when creating backup or replication tasks to a remote target server via Snapshot Replication, Hyper Backup, or other packages.
15. Fixed an issue where OpenVPN might fail to disable gateways.
16. Fixed an issue where using SAML SSO for DSM login might fail if the IdP's response was too long.
17. Fixed an issue where the system might become unresponsive when setting up OIDC SSO clients.
18. Fixed an issue where Resource Monitor might display abnormal connection times in Connections > Connected Users.
19. Fixed an issue where users might not be able to use a hardware security key for DSM login.
20. Fixed a security vulnerability regarding ghostscript (CVE-2024-29510).
21. Fixed security vulnerabilities regarding netatalk (CVE-2024-38439, CVE-2024-38440, CVE-2024-38441).
22. Fixed a security vulnerability regarding Terrapin Attack (CVE-2023-48795).
23. Fixed a security vulnerability regarding glibc (CVE-2023-4911).
24. Minor bug fixes.

(2024-08-26)

This update is recalled on 2024/09/11 to provide clearer details about the DSM and package updates to avoid confusion. This issue is fixed in version 7.2.2-72806.

(2025-02-18)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

What's New

1. Added support for verifying LDAP server certificates when joining a directory. The following limitations apply:
   • Certificate verification for C2 Identity Edge Server is not supported.
   • This configuration cannot be backed up in DSM system configuration backup or Hyper Backup Entire System Backup.

Fixed Issues

1. Fixed a security vulnerabilities (Synology-SA-25:03).

(2024-11-14)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-24:20).

(2024-04-08)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

Fixed Issues

1. Fixed an issue where upgrading from DSM 7.2.1 to later versions could fail.

(2024-01-23)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where Cloud Sync and Drive ShareSync couldn't function properly when Active Insight was running on Synology NAS.
2. Fixed multiple security vulnerabilities

(2023-11-24)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where updating to DSM 7.2.1 nano 2 caused Task Scheduler to be unable to create or edit tasks.

(2023-11-24)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where certain models might experience abnormal shutdown after updating to DSM 7.2.1.
2. Fixed an issue where files deleted locally might still exist on the Hyper Backup destination server.
3. Fixed an issue where file access failed due to errors during soft link creation in Btrfs file systems.
4. Fixed an issue where backing up WriteOnce shared folders in Hyper Backup might cause space consumption.
5. Fixed an issue where SSD read-write cache might cause unexpected restarts of DSM on SA3200D and SA3400D.

(2023-10-12)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where errors might occur when NFS clients accessed information on shared folder.
2. Fixed an issue where enabling OVS might affect the performance of 10Gb network interface controllers.
3. Fixed an issue where volumes containing SSD caches might not be mounted properly after updating from DSM 7.0 to DSM 7.2.1.

(2023-10-17)

Important Note

1. After installing this update, you will not be able to downgrade to a previous DSM version.
2. This update will restart your Synology NAS.
3. DSM 7.2.1-69057 was updated on October 17, 2023. This update includes the following changes:
   • Fixed an issue where errors might occur when NFS clients accessed information on shared folder.
   • Fixed an issue where enabling OVS might affect the performance of 10Gb network interface controllers.
   • Fixed an issue where volumes containing SSD caches might not be mounted properly after updating from DSM 7.0 to DSM 7.2.1.
4. For the models below, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • FS Series: FS3017, FS2017, FS1018
   • XS Series: RS18016xs+, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII, DS3018xs
   • Plus Series: RS2416RP+, RS2416+, DS916+, DS716+II, DS716+, DS216+II, DS216+, DS1817+, DS1517+, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS218+, RS1219+
   • Value Series: DS416, DS416play, DS216, DS216play, DS116, RS816, DS1817, DS1517, RS217, DS418play
   • J Series: DS416slim, DS416j, DS216j, DS418j, DS218j, DS419slim, DS119j

What's New

1. NFS clients can now access information on shared folder quotas.
2. Updated Storage Manager to 1.0.0-0017 to adjust the following:
   • Storage Manager has been modularized into a package to provide better system maintenance and update flexibility.
   • If a firmware update is required for Synology drives, it will be automatically performed during the DSM update.
   • Creating ext4 volumes is no longer supported for rackmount models.
   • For more information, see the release notes for Storage Manager.
3. Supports password setting by new users via links provided in emails.

Fixed Issues

1. Fixed an issue where Synology Account could not be signed out.
2. Fixed a security vulnerability regarding Ghostscript (CVE-2023-36664).
3. Fixed a security vulnerability regarding Sudo (CVE-2023-22809).
4. Fixed a security vulnerability regarding OpenSSL (CVE-2023-1255).
5. Fixed a security vulnerability regarding Zlib (CVE-2023-37434).

(2025-02-11)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

Fixed Issues

1. Fixed a security vulnerabilities (Synology-SA-24:20).

(2023-08-03)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where, after DSM 7.2-64570 Update 2, the NVMe SSD caches of a high-availability cluster might stop working.
2. Fixed an issue where Synology Account might not be properly signed out.

(2023-07-24)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where deleting snapshots through Snapshot Replication on the destination server might cause unused memory to not be released properly.
2. Fixed an issue where certain models might experience unsuccessful replication with Snapshot Replication after updating to DSM 7.2.
3. Fixed an issue where users signing in to DSM through Synology SSO might be unable to open Synology Office files.
4. Fixed an issue where the system might be unable to send test emails when Synology Account is configured to receive notifications.
5. Adjusted the suggestions generated by Western Digital Device Analytics (WDDA).
6. Fixed an issue where certain models might not display the corresponding storage pool after creating a volume.
7. Fixed an issue where the warning for checksum mismatch did not provide the file path for the files containing the error.
8. Fixed a security vulnerability regarding Ghostscript (CVE-2023-36664).

(2023-06-19)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where Btrfs volumes might not be able to run volume optimization successfully.
2. Fixed an issue where drive replacement might not work properly for SHR storage pools.

(2023-06-20)

Important Note

1. After installing this update, you will not be able to downgrade to a previous DSM version.
2. This update will restart your Synology NAS.
3. Starting from this version, logs for drives will no longer appear in Storage Manager > HDD and will be available only in Log Center.
4. Removed the "Automatically create port forwarding rules" option from QuickConnect advanced settings to increase network security.
5. Users can now create a Btrfs volume of up to 1 PB on specific Synology NAS models. This update automatically converts existing volumes that use the Btrfs (Peta Volume) file system to Btrfs. However, to create a volume larger than 200 TB, a RAID 6 storage pool and at least 64 GB of system memory are still required.Learn more
6. The maximum single volume size supported by RS2423+​/​RS2423RP+ has been adjusted to 200 TB (with a minimum system memory requirement of 32 GB).
7. Starting from this version, only Windows Server 2008 R2 and above versions will be supported. After installing this update, the current Windows Server 2008 domain and earlier versions will be unavailable.
8. DSM 7.2-64570 was updated on June 20, 2023. This update includes the following changes:
   • Updated SMB Service to 4.15.13-0787 to fix the following:
     • Improved the auto-block feature to prevent it from blocking IP addresses in the same subnet as DSM's network interface.
     • Fixed an issue where domain users and groups may experience permission failures after upgrade.
     • For more information, see the release notes for SMB Service.
   • Fixed an issue where Btrfs volumes might not be able to run volume optimization successfully.
   • Fixed an issue where drive replacement might not work properly for SHR storage pools.
9. For the models below, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • FS Series: FS3017, FS2017, FS1018
   • XS Series: RS18016xs+, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII, DS3018xs
   • Plus Series: RS2416RP+, RS2416+, DS916+, DS716+II, DS716+, DS216+II, DS216+, DS1817+, DS1517+, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS218+, RS1219+
   • Value Series: DS416, DS416play, DS216, DS216play, DS116, RS816, DS1817, DS1517, RS217, DS418play
   • J Series: DS416slim, DS416j, DS216j, DS418j, DS218j, DS419slim, DS119j

What’s New

1. Added support for WriteOnce shared folders on specific models. This feature is based on the Write Once, Read Many (WORM) technology and can be enabled to prevent files from being modified, deleted, or renamed for a specified period.
2. Added support for volume encryption on specific models. All volume encryption keys are stored in the Encryption Key Vault, which can be set up on a local Synology NAS or via KMIP on a remote Synology NAS.
3. Added support for M.2 NVMe SSD storage pools on specific models.
4. Added more Synology NAS models to support the M2D18 adapter card: RS822RP+, RS822+, RS1221RP+, and RS1221+.
5. Added more SSD cache group management options, including changing the RAID type and replacing a drive.
6. Added support for inline zero-block removal on specific models to increase the efficiency of data deduplication.
7. Adjusted how drive information is presented in Storage Manager. Users can now quickly check the condition of their drives by looking at the "Drive Status" field.
8. Users can now view the amount of used and free space for each storage pool and volume in Storage Manager.
9. Added a warning notification for when the available shared folder quota is low.
10. Supports deleting individual desktop notifications.
11. Supports sending DSM notifications via additional webhook providers, including LINE and Microsoft Teams.
12. Supports creating custom notification rules for system events, giving users greater control over what notifications to receive.
13. Supports exporting a list of users and of groups.
14. Added support for SAML to integrate DSM with external SSO servers.
15. Added the option to allow non-admin users to safely eject USB devices.
16. Users can now manually input the IP addresses or FQDNs of one or more domain controllers in the trusted domain. This allows Synology NAS to sync domain data directly with the specified domain controllers.
17. Users can now enable Synology's email server to send DSM notifications directly to their Synology Account.
18. Added support for Auto Block, which restricts SMB login attempts from abnormal IP addresses.

Fixed Issues

1. Fixed an issue where adding drives to a JBOD storage pool did not expand its capacity.
2. Updated Mbed-TLS to version 2.28.2 to fix multiple security vulnerabilities (CVE-2021-36647, CVE-2022-46392, CVE-2022-46393).
3. Updated Libksba to version 1.6.3 to fix a security vulnerability (CVE-2022-3515).
4. Updated SQLite to version 3.40.0 to fix a security vulnerability (CVE-2022-46908).
5. Updated Certifi to version 2022.12.07 to fix a security vulnerability (CVE-2022-23491).
6. Updated Node.js to version 14.21.1 to fix a security vulnerability (CVE-2022-43548).
7. Updated cURL to version 7.86.0 to fix multiple security vulnerabilities (CVE-2022-27774, CVE-2022-27775, CVE-2022-27776, CVE-2022-27781, CVE-2022-27782, CVE-2022-32205, CVE-2022-32206, CVE-2022-32207, CV E-2022-32221, CVE-2022-35252, CVE-2022-42915, CVE-2022-42916).
8. Updated PHP to version 8.1.9 to fix multiple security vulnerabilities (CVE-2019-11043, CVE-2021-21705, CVE-2022-31625).
9. Updated Sysstat to version 12.7.1 to fix a security vulnerability (CVE-2022-39377).
10. Updated OpenSSL to version 3.0.7 to fix multiple security vulnerabilities (CVE-2022-2068, CVE-2022-2097, CVE-2022-2274, CVE-2022-3358, CVE-2022-3602, CVE-2022-3786).
11. Updated Expat to version 2.5.0 to fix a security vulnerability (CVE-2022-43680).
12. Updated Libtirpc to version 2.87 to fix a security vulnerability (CVE-2021-46828).
13. Updated GnuPG to version 2.2.39 to fix a security vulnerability (CVE-2022-34903).
14. Updated OpenVPN to version 2.5.8 to fix a security vulnerability (CVE-2022-0547).
15. Updated libxml2 to version 2.9.14 to fix a security vulnerability (CVE-2022-23308).
16. Updated GMP to version 6.2.1 to fix a security vulnerability (CVE-2021-43618).
17. Updated ImageMagick to version 6.9.12-61 to fix multiple security vulnerabilities (CVE-2020-25664, CVE-2020-25665, CVE-2020-25666, CVE-2020-25667, CVE-2020-25674, CVE-2020-25675, CVE-2020-25676, CVE-2020-27560, CVE-2020-27750, CVE-2020-27751, CVE-2020-27752, CVE-2020-27753, CVE-2020-27754, CVE-2020-27755, CVE-2020-27756, CVE-2020-27757, CVE-2020-27758, CVE-2020-27759, CVE-2020-27760, CVE-2020-27761, CVE-2020-27762, CVE-2020-27763, CVE-2020-27764, CVE-2020-27765, CVE-2020-27766, CVE-2020-27767, CVE-2020-27768, CVE-2020-27769, CVE-2020-27770, CVE-2020-27771, CVE-2020-27772, CVE-2020-27773, CVE-2020-27774, CVE-2020-27775, CVE-2020-27776, CVE-2020-29599, CVE-2021-20176, CVE-2021-20224, CVE-2021-20241, CVE-2021-20245, CVE-2021-20246, CVE-2021-20309, CVE-2021-3574, CVE-2021-3596, CVE-2021-39212, CVE-2021-4219, CVE-2022-1114, CVE-2022-1115, CVE-2022-28463, CVE-2022-32545, CVE-2022-32546, CVE-2022-32547).
18. Updated FFmpeg to version 4.1.9 to fix multiple security vulnerabilities (CVE-2020-20892, CVE-2020-20902, CVE-2020-21688, CVE-2020-21697, CVE-2021-3566, CVE-2021-38114, CVE-2021-38291).
19. Fixed a security vulnerability regarding Netatalk (CVE-2022-45188).
20. Fixed multiple security vulnerabilities regarding Python3 (CVE-2020-10735, CVE-2021-28861, CVE-2022-45061).
21. Fixed multiple security vulnerabilities regarding iproute2 (CVE-2022-3527, CVE-2022-3529, CVE-2022-3530).
22. Fixed multiple security vulnerabilities regarding D-Bus (CVE-2022-42010, CVE-2022-42011, CVE-2022-42012).
23. Fixed a security vulnerability regarding syslog-ng (CVE-2022-38725).
24. Fixed a security vulnerability regarding inetutils (CVE-2022-39028).
25. Fixed a security vulnerability regarding DNSmasq (CVE-2022-0934).
26. Fixed a security vulnerability regarding BusyBox-udhcp (CVE-2019-5747).
27. Fixed multiple security vulnerabilities regarding Linux Kernel (CVE-2021-22600, CVE-2021-38209, CVE-2021-4037, CVE-2022-0168, CVE-2022-1016, CVE-2022-1729, CVE-2022-1786, CVE-2022-20141, CVE-2022-20368, CVE-2022-2078, CVE-2022-2639, CVE-2022-2905, CVE-2022-29581, CVE-2022-32250, CVE-2022-3524, CVE-2022-3566, CVE-2022-3567, CVE-2022-36879, CVE-2022-36946, CVE-2022-42703).
28. Fixed a security vulnerability regarding Nginx (CVE-2022-3638).
29. Fixed a security vulnerability regarding ghostscript (CVE-2023-28879).
30. Fixed a security vulnerability regarding curl (CVE-2023-23916).
31. Fixed an security vulnerability.(Synology-SA-23:07)
32. Fixed an issue where updating to DSM 7.2 might fail if users' Synology NAS weren't connected to the Internet.
33. Fixed an issue where, when the Encryption Key Vault of encrypted volumes was set on a KMIP server, the system would not be able to auto-unlock these volumes after a restart.
34. Fixed an issue where, if Web Station was installed on an encrypted volume, resetting the system would cause the volume to crash.
35. Updated C2 Identity Edge Server to version 1.52.0-0186 to ensure its availability and functionality.

Limitation

1. S.M.A.R.T. testing for M.2 NVMe SSDs is no longer supported.
2. Starting from DSM 7.2 Beta, Virtual Machine Manager will no longer support creating clusters with older DSM versions. Please update each host in the cluster to the same DSM version or above versions for the Virtual Machine Manager cluster to operate properly.

(2023-05-22)

Important Note

1. This update has been recalled on June 8, 2023, because of an issue where updating to DSM 7.2 might fail if users' Synology NAS were not connected to the Internet. The issue is fixed in version 7.2-64570.

(2025-02-20)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

What's New

1. Added support for verifying LDAP server certificates when joining a directory. The following limitations apply:
   • Certificate verification for C2 Identity Edge Server is not supported.
   • This configuration cannot be backed up in DSM system configuration backup or Hyper Backup Entire System Backup.

Fixed Issues

1. Fixed an issue where the system might display the incorrect status in email notification settings.
2. Fixed an issue where certain packages failed to display after installation.
3. Fixed a security vulnerabilities (Synology-SA-25:03).

(2024-11-26)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.
3. To enhance product security, the following packages will require a manual update after this release. Please go to the Package Center and click Repair to install the latest versions:
   • Synology Drive Server 3.2.1-23280
     • Note: After repairing Synology Drive Server, Synology Office will not auto-enable. Please go to Package Center > Synology Office, and click Run.
   • Replication Service 1.2.2-0353

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-24:20).
2. Fixed multiple security vulnerabilities (Synology-SA-24:02).
3. Fixed multiple security vulnerabilities (Synology-SA-24:01).
4. Fixed security vulnerabilities regarding netatalk (CVE-2024-38439, CVE-2024-38440, CVE-2024-38441).
5. Fixed a security vulnerability regarding Terrapin Attack (CVE-2023-48795).

(2023-06-05)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where, if the space reclamation process had encountered a heavy workload, the file system may be unable to mount after a system restart.
2. Fixed an issue where the system was unable to display an expansion unit's storage pools if the unit had not been properly connected during a restart.
3. Fixed an issue where the S.M.A.R.T. test results of NVMe SSDs could not be displayed.

(2023-04-12)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.
3. Users of HD6500 can now create a Btrfs volume of up to 1 PB. This update automatically converts existing volumes that use the Btrfs (Peta Volume) file system to Btrfs. However, to create a volume larger than 200 TB, a RAID 6 storage pool and at least 64 GB of system memory are still required.

What’s New

1. Updated OpenSSL to version 1.1.1t to fix multiple security vulnerabilities (CVE-2023-0286, CVE-2023-0215, CVE-2022-4450, CVE-2022-4304).

Fixed Issues

1. Fixed an issue where users couldn't access DSM via the Bonjour service.
2. Fixed stability issue of QuickConnect connections.
3. Fixed an issue where Synology mobile apps remained signed in after users ended all connections following a password change.
4. Fixed an issue of space reclamation not running according to the set schedule.
5. Fixed a display issue concerning the notification about incompatible network interface cards.

(2023-02-06)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Compatibility & Installation

1. The following drives will be updated automatically to the latest firmware version to fix an unexpected issue that may occur during repair or other read/write operations: HAT5300-4T (firmware version 1401 and 1402), HAT5300-16T (firmware version 1401), HAT5310-8T (firmware version 1401), and HAS5300-16T (firmware version 1401).

What’s New

1. Added support for E10G22-T1-Mini with an alternative source of hardware components.
2. Added support for SSD cache on HD6500.

Fixed Issues

1. Fixed an issue where drives added to a RAID Group in a Synology High Availability cluster were not allocated correctly between RAID arrays.

(2022-12-15)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed multiple security vulnerabilities. (Synology-SA-22:23)

(2022-10-20)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

What’s New

1. When users select Outlook as the system notification service provider, they will need to sign in with OAuth 2.0, which is a safer authentication method. Previously configured Outlook accounts will be migrated to "Custom SMTP server". We strongly recommend re-configuring the settings for authentication to ensure your Outlook account security.

Fixed Issues

1. Fixed an issue where performing file system checks on ext4 volumes would stop the quota settings on DSM from functioning.
2. Fixed an issue where after HDD migration, users couldn't properly mount the SSD caches that weren't migrated to the new device.
3. Fixed an issue where Universal Search couldn't find the data in shared folders on volumes that were created on DSM 7.1.1.
4. Fixed an issue where users couldn't access DSM from certain devices.
5. Fixed an issue where users couldn't access DSM via the Bonjour service.
6. Fixed an issue where the E10G18-T1 network card couldn't be detected on the passive server when creating a Synology High Availability cluster with RC18015xs+.
7. Fixed an issue where models with the AMD Ryzen V1000 CPU platform couldn't adjust the fan speed automatically after a system reboot.
8. Fixed multiple security vulnerabilities regarding Out-of-Band (OOB). (Synology-SA-22:17)

(2022-09-22)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.

Fixed Issues

1. Fixed an issue where users might not be able to change the desktop background.
2. Fixed an issue where volumes might become read-only due to data block allocation problems.
3. Fixed an issue where LUN backup tasks in Hyper Backup might fail after updating DSM 7.1.1.

(2022-09-27)

Important Notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 7.1 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart your Synology NAS.
3. Starting from this version, the bad sector count column will not be displayed along with hard drive information. Users should go to each drive's Health Info > History to view its complete bad sector information. To determine whether bad sectors are affecting the drive, see if there's a significant increase in the number of bad sectors over time.
4. Adjusted how the system calculates the estimated lifespan for M.2 NVMe SSDs to provide a more accurate estimation.
5. AAC-encoded content can be decoded and natively played back by most end devices, such as smartphones, tablets, computers, and smart TVs. Server-side transcoding of AAC-encoded content has been a redundant and resource-consuming process that was removed starting from DSM 7.1.1.
6. Surveillance Station must be updated to version 9.0.1- 7673 or above to be compatible with this update.
7. DSM 7.1.1-42962 was updated on September 27, 2022, to fix the issue where updating to DSM 7.1.1 might fail if users' Synology NAS weren't connected to the Internet.
8. DS414j users are recommended to keep their current DSM version if they are using or plan to use Synology Photos. The package version compatible with DSM 7.1.1 is currently under development and is scheduled to release in November.

What’s New

1. Added support for recipient profiles for email notifications, allowing users to add multiple email addresses under each profile and customize rules for the profiles.
2. Users can now enable the quota setting for shared folders that are located on volumes with data deduplication enabled.
3. Added support for RAID arrays with 16 and 20 hard drives when creating RAID groups.
4. Supports checking the 2-factor authentication status of user accounts at Control Panel > User & Group > Users.
5. Added support for SR-IOV on the following the Synology network interface cards: E10G21-F2, E25G21-F2.

Fixed Issues

1. Fixed an issue where the "Enable UID/GID shifting" setting would be deactivated after modifying the time interval for updating the user/group list on an LDAP client.
2. Fixed multiple security vulnerabilities regarding CIFS-utils (CVE-2022-27239, CVE-2022-29869).
3. Fixed a security vulnerability regarding OpenLDAP (CVE-2022-29155).
4. Fixed a security vulnerability regarding cURL (CVE-2022-22576).
5. Fixed a security vulnerability regarding Zlib (CVE-2018-25032).
6. Fixed a security vulnerability regarding Freetype (CVE-2022-27406).
7. Fixed multiple security vulnerabilities regarding 802.1X (CVE-2021-30004, CVE-2021-30266).
8. Fixed multiple security vulnerabilities regarding GNU C Library(CVE-2021-43396, CVE-2022-23218, CVE-2022-23219).
9. Fixed multiple security vulnerabilities regarding YAML-cpp (CVE-2018-20573, CVE-2018-20574, CVE-2019-6285).
10. Fixed multiple security vulnerabilities regarding Linux Kernel (CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2020-12770, CVE-2019-18282, CVE-2019-19527, CVE-2019-19532, CVE-2019-19537, CVE-2021-0605, CVE-2021-3732, CVE-2021-3739, CVE-2021-3753, CVE-2021-4149, CVE-2021-4203, CVE-2021-20317, CVE-2021-20321, CVE-2021-20322, CVE-2021-29154, CVE-2021-29650, CVE-2021-34556, CVE-2021-35477, CVE-2021-39633, CVE-2021-39698, CVE-2021-45868, CVE-2022-0185, CVE-2022-0330, CVE-2022-0617, CVE-2022-0847, CVE-2022-1011, CVE-2022-1048, CVE-2022-1055, CVE-2022-1353, CVE-2022-20008, CVE-2022-27666, CVE-2022-28893, CVE-2022-29582).
11. Updated OpenSSL to version 1.1.1o to fix multiple security vulnerabilities (CVE-2022-1292, CVE-2021-3712, CVE-2022-0778).
12. Updated libarchive to version 3.6.1 to fix multiple security vulnerabilities (CVE-2021-36976, CVE-2022-26280).
13. Updated Mbed-TLS to version 2.28 to fix multiple security vulnerabilities (CVE-2021-44732, CVE-2021-45450, CVE-2021-43666).
14. Updated Python to version 3.8.12 to fix multiple security vulnerabilities (CVE-2021-3733, CVE-2021-3737, CVE-2022-0391).
15. Updated Redis to version 6.2.7 to fix multiple security vulnerabilities (CVE-2022-24735, CVE-2022-24736).
16. Updated ISC DHCP to version 4.4.3 to fix a security vulnerability (CVE-2021-25217).

(2022-08-02)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 7.1 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where after restarting DSM, certain packages might fail to function properly if users had installed Synology High Availability.
2. Fixed an issue where users might not be able to sign in to their Gmail account when configuring the sender at Control Panel > Notification > Email.

(2022-07-05)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 7.1 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an unexpected issue that may occur when users Safe Ejected a single-volume storage pool that was created on DSM 6.2.4 or earlier.
2. Fixed an issue where certain packages couldn't function properly shortly after restarting DSM.
3. Fixed an unexpected issue that may occur when users tried to repair degraded storage pools that were previously migrated from a different version of DSM.

Known Issues

1. We suggest that you stay with your current DSM version if you are using or plan to use Synology High Availability. This new version might cause certificate problems with SHA clusters. We will release a version including the patch for this issue in the upcoming weeks.

(2022-06-01)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 7.1 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart your Synology NAS.

Compatibility & Installation

1. When an SSD's firmware version doesn't support the S.M.A.R.T test, the system will disable related functions.

Fixed Issues

1. Fixed an issue where the out-of-band port couldn't function properly when users configured Link Aggregation with only the ports on the external network card.
2. Fixed an issue where users couldn't configure access via QuickConnect for Synology Drive Server because they couldn't find the package at Control Panel > External Access > QuickConnect > Advanced.

(2022-04-27)

Important Note

1. The update is expected to be available in all regions shortly. If you want to update your DSM to this version now, please click here.
2. This update will restart your Synology NAS.
3. If users' Synology NAS aren't connected to the Internet, they must download SMB Service 4.10.18-0434 from the Download Center and manually install it after the DSM update to make sure the package functions properly. Note: Before users install SMB Service 4.10.18-0434, the package and its dependent package, Synology Directory Server, will be deactivated.

Fixed Issues

1. Fixed an issue where users couldn't upload files to DSM via the Finder on macOS Big Sur 11.
2. Fixed multiple security vulnerabilities regarding Netatalk (Synology-SA-22:06).

(2022-05-04)

Important notes

1. DSM 7.1-42661 is updated on May 04 to fix the issues below.
   • Fixed an issue where users couldn't upload files to DSM via the Finder on macOS Big Sur 11.
   • Fixed multiple security vulnerabilities regarding Netatalk (Synology-SA-22:06).
2. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly. If you want to update to the latest version now, please go to Synology Download Center and manually update your DSM.
3. This update will restart your Synology NAS.
4. After installing this update, you will not be able to downgrade to a previous DSM version.
5. For the following models, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • XS Series: RS3413xs+, RS10613xs+, RS3614xs+, RS3614xs, RS3614RPxs, RC18015xs+, DS3615xs, DS2015xs
   • Plus Series: DS2413+, DS1813+, DS1513+, DS713+, RS2414RP+, RS2414+, RS814RP+, RS814+, DS214+, RS815RP+, RS815+, DS2415+, DS1815+, DS1515+, DS415+, DS215+
   • Value Series: RS814, RS214, DS414, DS214, DS214play, DS114, RS815, DS1515,DS715, DS415play, DS115
   • J Series: DS213j, DS414slim, DS414j, DS214se, DS215j, DS115j, DS216se, DS119j
6. For the following models, DSM 7.1 will be the last upgradable version.
   • XS Series: RS3413xs+, RS10613xs+, RS3614xs+, RS3614xs, RS3614RPxs, RC18015xs+, DS3615xs, DS2015xs
   • Plus Series: DS2413+, DS1813+, DS1513+, DS713+, RS2414RP+, RS2414+, RS814RP+, RS814+, DS214+, RS815RP+, RS815+, DS2415+, DS1815+, DS1515+, DS415+, DS215+
   • Value Series: RS814, RS214, DS414, DS214, DS214play, DS114, RS815, DS1515,DS715, DS415play, DS115
   • J Series: DS213j, DS414slim, DS414j, DS214se, DS215j, DS115j, DS216se
7. Adjusted the LED indicator for drives' health status. When a drive's health status is critical or failing, the indicator will show static orange.
8. Windows 2000 domains are no longer supported.
9. Removed the "Synchronize with an NTP server every time a domain user signs in" option for Domain/LDAP advanced settings. Users can configure the "Synchronize with NTP server" option at Regional Options > Time instead.
10. Added support for the UPS power-off function at Control Panel > Hardware & Power > UPS.
11. Synology Storage Replication Adapter can only be used with DSM 7.0.1 or earlier versions. If you are using or plan to use Synology Storage Replication Adapter, please continue to use the current DSM version.
12. To create a new Virtual DSM machine for DSM 7.1, Virtual Machine Manager (VMM) must be updated to version 2.6. Virtual DSM machines running DSM 7.0 or earlier versions can be directly updated to DSM 7.1 without updating VMM.
13. Surveillance Station must be updated to version 8.2.11-7327 or above to be compatible with this update.
14. Fixed multiple security vulnerabilities.(Synology-SA-22:18)
15. Fixed an security vulnerability.(Synology-SA-23:05)

What’s New

1. SSD Cache Groups can be allocated to multiple volumes, allowing for more flexible management of SSD cache capacity.
2. Storage Manager now supports the management of the drives and storage of both active server and passive server in a Synology High Availability cluster.
3. Added support for Btrfs (Peta Volume) in Active Backup for Business and Synology High Availability.
4. If there is a file system error, DSM will unmount the volume to run file system checks without interrupting the services on other volumes.
5. Reduced the minimum threshold for low capacity notification from 5% to 3%.
6. Added support for custom OIDC (OpenID Connect) settings to integrate DSM with external SSO servers.
7. Added support for the RTF editor to allow users to preview notification message content and style in real-time when editing.
8. Added support for bypass traverse checking at Control Panel > File Services > Advanced to allow users to traverse folders and access permitted files or subfolders.
9. Supports specifying domains from the list of trusted domains to synchronize domain data.
10. Added the Greenwich Mean Time (GMT+00:00) time zone option at Control Panel > Regional Options > Time.
11. Added the synchronization status between DSM and NTP servers at Control Panel > Regional Options > Time.
12. Added icons on the taskbar to indicate ongoing background tasks that might affect system performance.
13. Users can now open tabs directly from search results in Control Panel.
14. Supports automatically updating the domain database and syncing domain data regularly. For Synology NAS that are used to create domains, the "Update User Groups/Lists" option in Control Panel > Domains/LDAP will be disabled by default after updating to DSM 7.1.
15. Starting from Advanced Media Extensions 2.0.0, users must sign in to their Synology Accounts in DSM to install HEVC and AAC codecs in the package, which allows for the playback of certain file formats in multimedia packages and Surveillance Station.(Learn more)

Limitation

1. The update progress bar on a Synology High Availability cluster might not display the actual progress percentage. This won't affect the update progress.

(2024-11-28)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-24:02).
2. Fixed multiple security vulnerabilities (Synology-SA-24:01).
3. Fixed multiple security vulnerabilities (Synology-SA-23:05).
4. Fixed security vulnerabilities regarding netatalk (CVE-2024-38439, CVE-2024-38440, CVE-2024-38441).
5. Fixed a security vulnerability regarding Terrapin Attack (CVE-2023-48795).

(2023-01-04)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.
3. AAC-encoded content can be decoded and natively played back by most end devices, such as smartphones, tablets, computers, and smart TVs. Server-side transcoding of AAC-encoded content has been a redundant and resource-consuming process that was removed in DSM 7.0 starting from this version.
4. When users select Outlook as the system notification service provider, they will need to sign in with OAuth 2.0, which is a safer authentication method. Previously configured Outlook accounts will be migrated to "Custom SMTP server". We strongly recommend re-configuring the settings for authentication to ensure your Outlook account security.
5. Advanced Media Extensions must be updated to version 1.1.2-0301 to be compatible with this update.
6. Video Station must be updated to version 3.0.5-2503 to be compatible with this update.
7. Audio Station must be updated to version 7.0.3-5401 to be compatible with this update.
8. Media Server must be updated to version 2.0.4-3150 to be compatible with this update.

Compatibility & Installation

1. The following drives will be updated automatically to the latest firmware version to fix an unexpected issue that may occur during repair or other read/write operations: HAT5300-4T (firmware version 1401 and 1402), HAT5300-16T (firmware version 1401), HAT5310-8T (firmware version 1401), and HAS5300-16T (firmware version 1401).

Fixed Issues

1. Fixed multiple security vulnerabilities. (Synology-SA-22:23)

(2022-06-23)

Important notes

1. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where DSM on hybrid Synology High Availability clusters with certain configuration couldn't be updated, and the passive server would be removed from the cluster after the update failure.
2. Fixed an issue where certain user interface text wasn't displayed correctly during DSM installation.

(2022-05-18)

Important notes

1. The update is expected to be available in all regions shortly. If you want to update your DSM to this version now, please click here.

Compatibility & Installation

1. Surveillance Station will restart automatically to ensure it functions normally after the DSM update.

Fixed Issues

1. Fixed an issue where the DSM versions on the active and passive server in a Synology High Availability cluster were different because the passive server wasn't connected to the internet during system update.
2. Fixed security vulnerabilities regarding Netatalk (Synology-SA-22:06). Note: SMB Service must be updated to 4.10.18-0329.
3. Fixed an issue where Synology High Availability clusters might misjudge that the NFS service failed and performed failover.

(2022-03-01)

Important Note

1. The update is expected to be available in all regions shortly. If you want to update your DSM to this version now, please click here.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where the SSD read-write cache might cause DSM to unexpectedly restart.
2. Fixed an issue where users could still edit the shared folders that are being moved, potentially resulting in unexpected data deletion.
3. Fixed an issue where users couldn’t add Google or Outlook accounts at Personal > Email Delivery.
4. Fixed an issue where sending a test email would fail if users selected Outlook as the service provider.
5. Fixed multiple security vulnerabilities. (Synology-SA-22:03)

(2022-01-13)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 7.0.1 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where DSM falsely identified errors in the license files of certain packages.
2. Fixed an issue where package logs weren't rotated after a switchover was performed on SA3200D.
3. Fixed an issue where Synology Account might be signed out unexpectedly.
4. Fixed an issue where the user interface response time might be longer when users ran user-defined scripts that included bind mounts.
5. Fixed an issue where the time attribute of files on an exFAT-formatted external storage device was displayed incorrectly.
6. Fixed an issue where there might be unexpected file permission changes in Surveillance Station due to multi-threaded file processing.
7. Fixed an issue where SSD caches might stop functioning when there is insufficient system memory.
8. Fixed an issue where mounting an encrypted shared folder on a Btrfs volume might fail.
9. Fixed multiple security vulnerabilities. (Synology-SA-22:01)

(2022-01-13)

Important Note

This update has been recalled on January 12, 2022, because of falsely identified license file errors. The issue is fixed in version 7.0.1-42218-2.

(2022-04-12)

Important notes

1. DSM 7.0.1-42218 is updated on 2023 Feb 02 to fix the issues below.
   • Fixed multiple security vulnerabilities. (Synology-SA-22:23).
2. AAC-encoded content can be decoded and natively played back by most end devices, such as smartphones, tablets, computers, and smart TVs. Server-side transcoding of AAC-encoded content has been a redundant and resource-consuming process that was removed in DSM 7.0 starting from this version.

Before Update

1. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly. If you want to update to the latest version now, please go to Synology Download Center and manually update your DSM.
2. DSM 7.0.1 will restart your Synology NAS.
3. After installing DSM 7.0.1, you will not be able to downgrade to a previous DSM version.
4. Before updating, your Synology NAS should be running DSM 6.2 or above versions.
5. Reserve extra time to complete DSM 7.0.1 update. The DSM update takes 10 to 20 minutes, while the package update may take more than an hour. The actual time depends on the computing power of your model, the number of media indexing files, and the number of packages installed.
6. If you're performing a clean installation, make sure to complete the installation with find.synology.com or Synology Assistant 7.0-50029 or above.
7. To avoid possible compatibility issues, users who installed Active Insight, Synology Photos, and Secure SignIn mobile applications during DSM 7.0 Preview/Beta programs should update the applications to the latest version after the DSM update.
8. DSM 7.0.1 consumes more system resources, including memory. We suggest that you check your NAS has at least 1 GB of memory before updating.
9. This version of DSM is compatible with the models below.
   • FS-Series: FS6400, FS3600, FS3400, FS3017, FS2017, FS1018
   • SA-Series: SA3600, SA3400, SA3200D
   • 21-Series: RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+, DS1821+, DS1621+, DS1621xs+, DVA3221, RS4021xs+, RS3621xs+, RS3621RPxs
   • 20-Series: RS820RP+, RS820+, DS1520+, DS920+, DS720+, DS620slim, DS420+, DS420j, DS220+, DS220j, DS120j
   • 19-Series: RS1219+, RS819, DS2419+II, DS2419+, DS1819+, DS1019+, DS419slim, DS119j, DVA3219, RS1619xs+
   • 18-Series: RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS418, DS418play, DS418j, DS218+, DS218, DS218play, DS218j, DS118, RS3618xs, DS3018xs
   • 17-Series: RS217, DS1817+, DS1817, DS1517+, DS1517, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII
   • 16-Series: RS2416RP+, RS2416+, RS816, DS916+, DS716+II, DS716+, DS416, DS416play, DS416slim, DS416j, DS216+II, DS216+, DS216, DS216play, DS216j, DS216se, DS116, RS18016xs+
   • 15-Series: RS815RP+, RS815+, RS815, DS2415+, DS1815+, DS1515+, DS1515, DS715, DS415+, DS415play, DS215+, DS215j, DS115, DS115j, RC18015xs+, DS3615xs, DS2015xs
   • 14-Series: RS2414RP+, RS2414+, RS814RP+, RS814+, RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214play, DS214se, DS114, RS3614xs+, RS3614xs, RS3614RPxs
   • 13-Series: DS2413+, DS1813+, DS1513+, DS713+, DS213j, RS3413xs+, RS10613xs+
10. For the models below, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
    • XS Series: RS3413xs+, RS10613xs+, RS3614xs+, RS3614xs, RS3614RPxs, RC18015xs+, DS3615xs, DS2015xs
    • Plus Series: DS2413+, DS1813+, DS1513+, DS713+, RS2414RP+, RS2414+, RS814RP+, RS814+, DS214+, RS815RP+, RS815+, DS2415+, DS1815+, DS1515+, DS415+, DS215+
    • Value Series: DS114, DS214, DS214play, DS414, RS214, RS814, RS815, DS1515, DS715, DS415play, DS115
    • J Series: DS119j, DS213j, DS214se, DS414j, DS414slim, DS215j, DS115j

DSM

1. USB devices (Wi-Fi dongle, Bluetooth dongle, 3G/4G dongle, USB DAC/speaker, and DTV dongle) are no longer supported. If your Synology NAS is currently connected via a wireless dongle, it will be disconnected after the update.
2. DSM 7.0.1 ends support for ext3. We strongly suggest backing up the data stored on your ext3 volumes and transferring the data to volumes with supported file systems before the update.
3. DSM 7.0.1 by default disables NTLMv1 and enables NTMLv2 only, so SMB clients (e.g., Windows XP devices, media players, network printers, smart TVs, and IP cameras) won’t be able to access your Synology NAS. To restore the connection after the update, go to Control Panel > File Services > SMB > Advanced Settings > Others and enable NTLMv1 authentication.
4. NFSv4.1 and related advanced functions (multipathing) are no longer supported on Synology NAS models with the following package architectures: Alpine, Alpine4k, armada38x, Avoton, Braswell, Bromolow, Cedarview, Grantley, Monaco. If you had previously enabled NFSv4 and NFSv4.1, the maximum NFS protocol is set to NFSv4 by default after the update. For more information about the package architecture of your model, please refer to this article.
5. Creating SSD caches on block-level LUNs is no longer supported. Existing SSD caches for block LUNs will function normally after the update.
6. NT4 domains are no longer supported. Current NT4 domains will be unavailable after the update.
7. The URLs used by DSM when updating or running services have been modified. Please read this article and make sure that your firewall rules are configured appropriately.
8. iSCSI Manager will become SAN Manager. Please refer to package release notes for more details.
9. When you reconnect to iSCSI targets from your VMware ESXi hosts after the DSM update, the datastores on the LUNs that are mapped to the targets may not be mounted properly. This only happens to LUNs created before the update. The resolution can be found in VMware Knowledge Base.
10. To provide comprehensive TLS support and ensure compatibility, the TLS/SSL profile level in Modern compatibility will automatically change to Intermediate Compatibility after the update.
11. EZ-Internet is merged with Router Configuration in Control Panel. To set up port forwarding, go to Control Panel > External Access > Router Configuration.
12. Python3 is merged into DSM as a built-in service. The original Python3 package will be unavailable in Package Center and you can remove it manually.
13. The following DDNS providers are removed from the service provider list at Control Panel > External Access > DDNS:
    ClouDNS, DNO-O-Matic, DNSEXIT, Dynamic DO!.jp, Joker.com, RU-CENTER, TwoDNS.de, Variomedia, Zoneedit.com
14. The updated QuickConnect connection is secured with an SSL certificate, and your QuickConnect domain will be passed to Let's Encrypt for certificate application purposes. Please refer to the Services Data Collection Disclosure for more details.
15. Security Advisor by default enables Login Analysis and certain custom account detection check items after the update.
16. Video conversion to FLV and MPEG-4 Part 2 formats on the following models is no longer supported.
    • 20-Series: DS120j
    • 19-Series: DS119j
    • 16-Series: DS216se
    • 15-Series: DS215j, DS115, DS115j
    • 14-Series: RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214se, DS114
    • 13-Series: DS213j

Packages

1. Synology Moments and Photo Station will be upgraded to and merged as Synology Photos. If you would like to use Synology Photos on your mobile devices, please install the iOS/Android app. See this page for more details.
2. Cloud Station Server and Cloud Station ShareSync will be upgraded to and merged with Synology Drive Server. If you are using any Cloud Station Suite applications (Cloud Station Server, Cloud Station Drive, Cloud Station Backup, Cloud Station ShareSync, or DS cloud), you must switch to their counterparts in the Synology Drive Suite to ensure compatibility. See this page for more details.
3. MariaDB 5 is incompatible with DSM 7.0.1. To update to DSM 7.0.1, please install MariaDB 10, migrate the database, and uninstall MariaDB 5 in Package Center first.
4. If you cannot find certain Synology approved third-party packages in Package Center, check this articlefor the latest status of the packages. For other third-party packages, please contact their developers for more information.
5. The following packages are no longer supported:
   Cloud Station Server (replaced by Synology Drive Server), Cloud Station ShareSync (replaced by Synology Drive Server), Discourse, DokuWiki, Drupal, Drupal8, DVBLink, GitLab, GLPI, Hasplm, Java7, Java8, LimeSurvey, Logitech^® Media Server, LXQt, Magento, Magento2, MantisBT, Moments (replaced by Synology Photos), Mono, Moodle, Node.js 0.10, Node.js 0.12, Node.js v4, Node.js v6, Node.js v8, Odoo 8, OpenERP 6.1, OpenERP 7.0, OrangeHRM, Orthanc, osCommerce, osTicket, PHP PEAR, Photo Station (replaced by Synology Photos), phpBB, Piwik, Podcast Generator, PrestaShop, PrestaShop1.7, PythonModule, Redmine, Ruby, Spree, SugarCRM, SVN, Synology File Manager, Tomcat6, Tomcat7, TVMosaic, Webalizer.
6. After you update to Web Station 3.0.0-0308, a web_packages shared folder will be created by default to store files from installed third-party packages (e.g., phpMyAdmin).

What’s New

1. Supports migrating SA3200D system configurations when users perform HDD migration.
2. Added support for memory cache mirroring across controllers for better data consistency on SA3200D.
3. Added support for the "Sync remote mounted folders" option for Shared Folder Sync.
4. Supports creating volumes of up to 1 PB in Btrfs (Peta Volume) format on the XS/XS+, SA (SA3200D excluded), and FS-series models. (Learn more)
5. Added support for data deduplication on Btrfs volumes on certain models. (Learn more)
6. Supports notifying users when there is insufficient storage for metadata.
7. Updated OpenSSL to version 1.1.1l to fix multiple security vulnerabilities (CVE-2021-3711, CVE-2021-3712).

Compatibility & Installation

1. The following drives will be updated automatically to the latest firmware version to fix an unexpected issue that may occur during repair or other read/write operations: HAT5300-4T (firmware version 1401 and 1402), HAT5300-16T (firmware version 1401), HAT5310-8T (firmware version 1401), and HAS5300-16T (firmware version 1401).

Fixed Issues

1. Fixed an issue where DSM might not automatically reconnect to a VPN after disconnection.
2. Fixed the sorting issue on the View Details page in Resource Monitor > Performance > Disks when a USB drive is connected.
3. Fixed an issue where the display in Volume Settings in Storage Manager was incorrect once users pinned the desktop widgets.
4. Fixed an issue where the throughput in Resource Monitor might not be displayed correctly when the system network traffic or the throughput of disks or volumes was heavy.
5. Fixed an issue where when users used third-party extensions to change the DSM theme, they couldn't customize the wallpaper.
6. Fixed an issue where when non-administrator users shared files with password-protected links, the file names were displayed incorrectly.
7. Fixed an issue where a healthy drive might be falsely detected as malfunctioning after it was swapped with a failed drive in the same storage pool when the system was shut down. The issue would cause the degraded storage pool to crash or become missing.
8. Fixed an issue where users couldn't import Docker container configuration files from local computers.
9. Fixed an issue where certain packages couldn't be installed when the built-in "DSM UI Compatible 6.x" package is missing.
10. Fixed an issue where package statuses might be stuck at "Getting Status" in Package Center.
11. Fixed an issue where filters might not work when users edit domain user or group privileges at Control Panel > Application Privileges.
12. Fixed an issue where Security Advisor didn't apply the security baseline settings for the first scan.
13. Fixed an issue where users given the "Local user and management" privilege couldn't perform the assigned actions.
14. Fixed an issue where users who had taken snapshots of a shared folder couldn't disable the usage detail analysis of the shared folder's volume in Storage Manager.
15. Fixed an issue where automatic configuration backup might fail under certain conditions.
16. Fixed a security vulnerability regarding GhostScript used by AirPrint. (CVE-2021-3781).
17. Fixed multiple security vulnerabilities. (Synology-SA-21:25)"

(2021-07-19)

Important notes

DSM 7.0-41890 is updated on July 19 to fix issues with SAN Manager 1.0.1-0197, Active Insight 1.0.2-1007, and SMB Service 4.10.18-0223. Users who have already installed this version of DSM are recommended to update the packages in Package Center.

Before Update

1. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly. If you want to update to the latest version now, please go to Synology Download Center and manually update your DSM.
2. After the installation of DSM 7.0, you will not be able to downgrade to a previous DSM version.
3. Before updating, your Synology NAS should be running DSM 6.2 or above versions.
4. Reserve extra time to complete DSM 7.0 update. The DSM update takes 10 to 20 minutes, while package update may take more than an hour. The actual time depends on the computing power of your model, the number of media indexing files, and the number of packages installed.
5. If you're performing a clean installation, make sure to complete the installation with find.synology.com or Synology Assistant 7.0-50029 or above.
6. To avoid possible compatibility issues, users who installed Active Insight, Synology Photos, and Secure SignIn mobile applications during DSM 7.0 Preview/Beta programs should update the applications to the latest version after the DSM update.
7. DSM 7.0 consumes more system resources, including memory. If your model has less than 1 GB of memory, updating to DSM 7.0 may affect system performance.
8. This version of DSM is compatible with the models below. DSM 7.0 for FS, SA, XS/XS+, and DVA series is currently under development and will be available in the next quarter.
   • 21-series: RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+, DS1821+, DS1621+
   • 20-series: RS820RP+, RS820+, DS1520+, DS920+, DS720+, DS620slim, DS420+, DS420j, DS220+, DS220j, DS120j
   • 19-series: RS1219+, RS819, DS2419+II, DS2419+, DS1819+, DS1019+, DS419slim, DS119j
   • 18-series: RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS418, DS418play, DS418j, DS218+, DS218, DS218play, DS218j, DS118
   • 17-series: RS217, DS1817+, DS1817, DS1517+, DS1517
   • 16-series: RS2416RP+, RS2416+, RS816, DS916+, DS716+II, DS716+, DS416, DS416play, DS416slim, DS416j, DS216+II, DS216+, DS216, DS216play, DS216j, DS216se, DS116
   • 15-series: RS815RP+, RS815+, RS815, DS2415+, DS1815+, DS1515+, DS1515, DS715, DS415+, DS415play, DS215+, DS215j, DS115, DS115j
   • 14-series: RS2414RP+, RS2414+, RS814RP+, RS814+, RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214play, DS214se, DS114
   • 13-series: DS2413+, DS1813+, DS1513+, DS713+, DS213j
9. For the models below, you can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • Plus Series: DS214+, DS215+, DS415+, DS713+, DS1513+, DS1515+, DS1813+, DS1815+, DS2413+, DS2415+, RS814RP+, RS814+, RS815RP+, RS815+, RS2414RP+, RS2414+
   • Value Series: DS114, DS115, DS214, DS214play, DS414, DS415play, DS715, DS1515, RS214, RS814, RS815
   • J Series: DS115j, DS119j, DS213j, DS214se, DS215j, DS414j, DS414slim

DSM

1. USB devices (Wi-Fi dongle, Bluetooth dongle, 3G/4G dongle, USB DAC/speaker, and DTV dongle) are no longer supported. If your Synology NAS is currently connected via a wireless dongle, it will be disconnected after the update.
2. DSM 7.0 will end support for ext3. We strongly suggest backing up the data stored on your ext3 volumes and transferring the data to volumes with supported file systems before the update.
3. DSM 7.0 by default disables NTLMv1 and enables NTMLv2 only, so SMB clients (e.g., Windows XP devices, media players, network printers, smart TVs, and IP cameras) won’t be able to access your Synology NAS. To restore the connection after the update, go to Control Panel > File Services > SMB > Advanced Settings > Others and enable NTLMv1 authentication.
4. NFSv4.1 and related advanced functions (multipathing) are no longer supported on Synology NAS models with the following package architectures: Alpine, Alpine4k, armada38x, Avoton, Braswell, Bromolow, Cedarview, Grantley, Monaco. If you had previously enabled NFSv4 and NFSv4.1, the maximum NFS protocol is set to NFSv4 by default after the update. For more information about the package architecture of your model, please refer to this article.
5. Creating SSD caches on block-level LUNs is no longer supported. Existing SSD caches for block LUNs will function normally after the update.
6. NT4 domains are no longer supported. Current NT4 domains will be unavailable after the update.
7. The URLs used by DSM when updating or running services have been modified. Please read this article and make sure that your firewall rules are configured appropriately.
8. iSCSI Manager will become SAN Manager on DSM 7.0. Please refer to package release notes for more details.
9. When you reconnect to iSCSI targets from your VMware ESXi hosts after the DSM update, the datastores on the LUNs that are mapped to the targets may not be mounted properly. This only happens to LUNs created before the update. The resolution can be found in VMware Knowledge Base.
10. To provide comprehensive TLS support and ensure compatibility, the TLS/SSL profile level in Modern compatibility will automatically change to Intermediate Compatibility after the update.
11. EZ-Internet is merged with Router Configuration in Control Panel. To set up port forwarding, go to Control Panel > External Access > Router Configuration.
12. Python3 is merged into DSM as a built-in service. The original Python3 package will be unavailable in Package Center and you can remove it manually.
13. The following DDNS providers are removed from the service provider list at Control Panel > External Access > DDNS:
    CloudNS, DNO-O-Matic, DNSEXIT, Dynamic DO!.jp, Joker.com, RU-CENTER, TwoDNS.de, Variomedia, Zoneedit.com
14. The updated QuickConnect connection is secured with an SSL certificate, and your QuickConnect domain will be passed to Let's Encrypt for certificate application purposes. Please refer to the Privacy Statement for more details.
15. Security Advisor by default enables Login Analysis and certain custom account detection check items after the update.
16. Video conversion to FLV and MPEG-4 Part 2 formats on the following models is no longer supported.
    • 20-series: DS120j
    • 19-series: DS119j
    • 16-series: DS216se
    • 15-series: DS215j, DS115, DS115j
    • 14-series: RS814, RS214, DS414, DS414slim, DS414j, DS214+, DS214, DS214se, DS114
    • 13-series: DS213j
17. Active Insight and Hybrid Share Service are both built-in with DSM 7.0 and are currently in beta. They will be installed along with the update. Packages
18. Synology Moments and Photo Station will be upgraded to and merged as Synology Photos. If you would like to use Synology Photos on your mobile devices, please install the iOS/Android app. See this page for more details.
19. Cloud Station Server and Cloud Station ShareSync will be upgraded to and merged with Synology Drive Server. If you are using any Cloud Station Suite applications (Cloud Station Server, Cloud Station Drive, Cloud Station Backup, Cloud Station ShareSync, or DS cloud), you must switch to their counterparts in the Synology Drive Suite to ensure compatibility. See this page for more details.
20. MariaDB 5 is incompatible with DSM 7.0. To update to DSM 7.0, please install MariaDB 10, migrate the database, and uninstall MariaDB 5 in Package Center first.
21. Migration Assistant is currently in beta on DSM 7.0. More information can be found on the Beta Program page, including compatibility details and release notes.
22. If you cannot find certain Synology approved third-party packages in Package Center, check this article for the latest status of the packages. For other third-party packages, please contact their developers for more information.
23. The following packages are no longer supported:
    Cloud Station Server (replaced by Synology Drive Server), Cloud Station ShareSync (replaced by Synology Drive Server), Discourse, DokuWiki, Drupal, Drupal8, DVBLink, GitLab, GLPI, Hasplm, Java7, Java8, LimeSurvey, Logitech^® Media Server, LXQt, Magento, Magento2, MantisBT, Moments (replaced by Synology Photos), Mono, Moodle, Node.js 0.10, Node.js 0.12, Node.js v4, Node.js v6, Node.js v8, Odoo 8, OpenERP 6.1, OpenERP 7.0, OrangeHRM, Orthanc, osCommerce, osTicket, PHP PEAR, Photo Station (replaced by Synology Photos), phpBB, Piwik, Podcast Generator, PrestaShop, PrestaShop1.7, PythonModule, Redmine, Ruby, Spree, SugarCRM, SVN, Synology File Manager, Tomcat6, Tomcat7, TVMosaic, Webalizer
24. After you update to Web Station 3.0.0-0308, a web_packages shared folder will be created by default to store files from installed third-party packages (e.g., phpMyAdmin).

What’s New

1. Storage
   • A new revision of Storage Manager:
     • Added visuals of Synology NAS models with their drive slots, expansion units, and built-in M.2 slots to help users view drive status.
     • Enhanced usability with a clearer display of the relationship between storage pools, volumes, and SSD caches.
     • Enhanced the setup process of Hot Spare and Data Scrubbing.
     • Added a feature to guide users through configuring newly inserted drives.
   • New features of storage pools, volumes, and drives:
     • Supports performing different tasks on different storage pools simultaneously.
     • Supports updating the firmware for Synology drives.
     • Enhanced the access performance of degraded RAID 6 by 70%.
     • Added display of the storage usage of each category item on Btrfs volumes.
     • Added a new Fast Repair mechanism to reduce the time needed for RAID repair based on storage usage and thus reduce the time of RAID degradation.
     • Added the ability to replace a drive in a healthy storage pool with an unused one without interrupting services or causing storage pool degradation.
     • Added the ability to automatically replace “Critical” or “Failing” drives in protected storage pools with Hot Spare. 　
     • Added the Auto Repair feature to automatically run a RAID repair when a malfunctioned drive is replaced with a healthy one in the same drive slot.
     • Added the ability to eject a storage pool on an expansion unit to ensure the safe removal of drives without interrupting system services.
     • Added the ability to mount storage pools from drives that are inserted after the device has been powered on without interrupting system services.
     • Supports customizing the low capacity notification for individual volumes when their available space drops below the specified value.
     • Added support for space reclamation schedules for Btrfs volumes.
   • New features of SSD Cache:
     • Added the ability to create and remove SSD caches without interrupting system services.
     • Added the new SSD Cache Advisor to monitor I/O accesses and provide more accurate capacity recommendations.
     • Added the ability to pin all Btrfs metadata to SSD caches to enhance the performance of accessing small files and shorten the response time when accessing files regularly.
     • Added the ability to activate automatic protection on SSD read-write caches with multi-drive fault tolerance.
     • Added support for the quick write-back mechanism, delivering a 30% faster synchronization from SSD caches to HDDs when automatic protection is activated.
2. Resource Monitor
   • Revamped the display of recorded performance metrics with a finer granularity of data points and the ability to focus on certain time points.
   • Enhanced monitoring transparency of system services by separating larger, unrelated processes.
   • Added the ability to manage currently accessed files and their connected users to better handle locked files.
3. File System/File Services
   • Supports enabling/disabling file compression for shared folders created on DSM 7.0.
   • Enhanced file compression ratio and added display for the current ratio for each shared folder.
   • Added support for cross-protocol locking between SMB and AFP.
   • Supports accessing encrypted shared folders via NFS on certain models. (Learn more)
   • Enhanced Btrfs performance and lowered I/O latency.
   • Modularized the SMB file service into a package.
   • Allows users to enable/disable SMB transfer logs for permission changes, providing more flexible transfer logs.
   • Enhanced the encryption performance by up to 10% on certain models with the x86 platform.
   • In Windows File Explorer, users can now search for the files and their content in indexed folders.
4. User Management
   • Enhanced the password policy. Passwords must exclude username and description, include both upper-case and lower-case letters as well as numerical digits. The minimum password length is 8 characters.
   • Added the ability to delegate predefined administrator roles to non-administrator user accounts and allow them to manage certain services and system settings, offering more flexible permission management.
   • Added the ability to require imported users to change their passwords after their initial DSM logins.
   • Added the ability to assign user accounts from import lists to specific groups.
5. Domain/LDAP Integration
   • Enhanced LDAP client authentication performance by reducing the number of queries sent with a caching mechanism.
   • The following services and packages now support UPN logins: Synology Assistant, Hyper Backup, Synology Mail Server, Synology Calendar, and Shared Folder Sync.
   • Enhanced domain database synchronization performance by syncing only altered data.
6. Security
   • Added the ability to block USB and console ports.
   • Enhanced QuickConnect connection process to strengthen security.
   • Provides only TLS 1.3 support for the Modern Compatibility option for TLS/SSL profile level.
   • Added the ability to set 2-factor authentication as mandatory for specific users or groups.
7. User Experience
   • Enhanced user experience for DSM first-time installation and Synology Account related service setup (e.g. QuickConnect).
   • Added the ability to automatically install important DSM and package updates.
   • Added information and usage tips about security, notification, and other recommended settings in DSM Help.
   • Added the ability to back up DSM system configuration to a connected Synology Account.
   • Added the ability to export folder permissions reports.
   • Added support for application webhook integration to send system notifications to Synology Chat and other third-party applications.
   • Added severity levels to notifications for better categorization of events.
   • Enhanced user interface responsiveness to launch installed packages and services faster.
   • Enhanced login performance when connecting from external networks.
   • Enhanced user experience for package update processes by displaying the update status with package icons on the DSM desktop.
   • Supports resetting the passwords of all user accounts in the administrators group by pressing the RESET button on Synology NAS for 4 seconds.
   • Revamped the Service tab at Control Panel > Info Center. The tab focuses on the status of enabled services and packages, including local ports, router ports, and firewall permissions.
   • Enhanced Control Panel usability by reorganizing related functionality together:
     • Added a new Synology Account tab to consolidate future services provided through Synology Account.
     • Consolidated Domain/LDAP options to be configured in a new unified wizard.
     • Consolidated QuickConnect settings into the External Access tab.
     • Consolidated User and Groups settings.
     • Consolidated Theme and Application Portal options into Login Portal tab.
     • Consolidated email notification options into Notification > Email tab.
     • Consolidated WS-Discovery into File Services > SMB.
     • Consolidated Network > DSM Settings into Login Portal > Web Services.
     • Relocated the SMB Server Signing option to File Services > SMB > Advanced Settings.
     • Moved Shared Folder Sync into the File Services tab.
     • Moved the Enforce 2-factor authentication option into the Security tab.
     • Modularized DHCP Server into a package.

Fixed Issues

1. Fixed an issue where DSM desktop widgets may disappear after clicking the Show Desktop button.
2. Fixed an issue where, after updating to DSM 7.0-41222, users attempting to sign in to packages through application portals may be stuck on the "Getting Ready" page.
3. Fixed an issue where volume errors might occur when usage detail analysis is enabled in Storage Manager.
4. Fixed an issue where exFAT external storage devices could not mount successfully when the available system memory was fragmented.
5. Fixed an issue where auto poweroff could not be disabled via the HDD Hibernation interface.
6. Fixed an issue where users logging in to some mobile apps causes saved user login sessions to remain even after system reboot.
7. Fixed an issue where certain circumstances might prevent the system from correctly backing up configuration settings.
8. Fixed an issue where Synology Chat Client shows up blank when users sign in.
9. Fixed an issue where DS video can't play videos on certain Samsung TV models.
10. Fixed an issue where UPnP connection via QuickConnect may fail when relay service is not enabled.
11. Fixed an issue where new users could not apply the default wallpaper or images stored in DiskStation as the desktop background.
12. Fixed an issue where Bonjour service generated redundant logs.
13. Fixed an issue where managed servers might become disconnected from the CMS Host if the CMS Host is running DSM 6.2.4.

Limitations

1. When you click Notifications > Show All on your desktop right after the update, you will only be able to see the 500 recent notifications. However, this won't occur for future notifications.
2. DSM 7.0 no longer supports sending push notifications via Synology’s email server. To set up email notifications, go to Control Panel > Notification > Email.
3. DDSM is incompatible with DSM 7.0. To continue using DDSM, you should retain the current DSM version. To update to DSM 7.0, please delete DDSM first.
4. The "Shut down UPS when the system enters Standby Mode" function is only available on Omron UPS.
5. The AFP service is disabled by default after a clean installation.
6. After the update, if your Synology NAS is a managed server in Central Management System, the CMS host must run DSM 6.2.4 or above and CMS 2.1.4 to be able to manage important DSM updates and package updates on your device.
7. Central Management System no longer supports managing Synology NAS with DSM version earlier than DSM 6.2. Please update all managed servers to DSM 6.2 or above first. Managed servers that are unable to update to DSM 6.2 should be disjoined from the CMS host before the update.

(2024-12-03)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. This update will restart the device.
3. To enhance product security, the following packages will require a manual update after this release. Please go to the Package Center and click Repair to install the latest versions:
   • Synology Drive Server 3.0.4-12699
     • Note: After repairing Synology Drive Server, Synology Office will not auto-enable. Please go to Package Center > Synology Office and click Run.
   • Replication Service 1.0.12-0066

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-24:02).
2. Fixed multiple security vulnerabilities (Synology-SA-24:01).
3. Fixed multiple security vulnerabilities (Synology-SA-23:05).
4. Fixed security vulnerabilities regarding netatalk (CVE-2024-38439, CVE-2024-38440, CVE-2024-38441).
5. Fixed a security vulnerability regarding Terrapin Attack (CVE-2023-48795).

(2023-05-02)

Important notes

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
   • Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
2. Depending on your Synology NAS model, this update will restart the device.
3. AAC-encoded content can be decoded and natively played back by most end devices, such as smartphones, tablets, computers, and smart TVs. Server-side transcoding of AAC-encoded content has been a redundant and resource-consuming process that was removed in DSM 6 starting from this version.
4. For the following packages to be available after this update, users must go to the Package Center and click Repair to install the latest version:
   • Advanced Media Extension 1.0.2-0039
   • Audio Station 6.5.7-3383
   • Media Server 1.8.5-2902
   • Video Station 2.5.1-1668
5. Moments and Photo Station will resume working once Advanced Media Extension is updated to the latest version.

Compatibility & Installation

1. The following drives will be updated automatically to the latest firmware version to fix an unexpected issue that may occur during repair or other read/write operations: HAT5300-4T (firmware version 1401 and 1402), HAT5300-16T (firmware version 1401), HAT5310-8T (firmware version 1401), and HAS5300-16T (firmware version 1401).

What’s New

1. When users select Outlook as the system notification service provider, they will need to sign in with OAuth 2.0, which is a safer authentication method. Previously configured Outlook accounts will be migrated to "Custom SMTP server". We strongly recommend re-configuring the settings for authentication to ensure your Outlook account security.

Fixed Issues

1. Fixed an issue where files shared via SMB may not be discoverable through macOS Ventura's Spotlight search.
2. Fixed an issue where files shared via AFP may not be discoverable through macOS Ventura's Spotlight search.
3. Fixed an issue where a Synology NAS running DSM 7.2 may be unable to update its domain database after syncing data from a domain controller running DSM 6.2.4.
4. Fixed a security vulnerability (Synology-SA-22:23).

(2022-05-24)

Important Note

1. The update is expected to be available in all regions shortly, while the time of release in each region vary slightly. If you want to update your DSM to this version now, please click here.
2. Only Synology NAS with DSM 6.2.4 installed can be updated to this version.

Fixed Issues

1. Fixed multiple security vulnerabilities regarding Netatalk (Synology-SA-22:06).

(2022-02-22)

Important Note

1. The update is expected to be available in all regions shortly, while the time of release in each region vary slightly. If you want to update your DSM to this version now, please click here.
2. Only Synology NAS with DSM 6.2.4 installed can be updated to this version.

Fixed Issues

1. Fixed an issue where users couldn’t add Google or Outlook accounts at Personal > Email Delivery.
2. Fixed an issue where sending a test email would fail if users selected Outlook as the service provider.
3. Fixed multiple security vulnerabilities. (Synology-SA-22:03)
4. Fixed an issue where filters might not work when users edit domain user or group privileges at Control Panel > Application Privileges.
5. Fixed an issue where Avid Pro Tools couldn't save files via SMB.

(2022-01-27)

Important Note

1. The update is expected to be available in all regions shortly, while the time of release in each region vary slightly. If you want to update your DSM to this version now, please click here.
2. Only Synology NAS with DSM 6.2.4 installed can be updated to this version.

Fixed Issues

1. Fixed a security vulnerability regarding Samba (Synology-SA-22:02).

(2022-01-11)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 6.2.4 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where package logs weren't rotated after a switchover was performed on SA3200D.
2. Fixed an issue where Synology Account might be signed out unexpectedly.
3. Updated the renewal rule of the built-in certificate to prevent DSM connection errors.
4. Fixed an issue where users couldn't expand a RAID 1 storage pool on the active server in a Synology High Availability cluster when the active server's RAID 1 storage pool is smaller than the one on the passive server.
5. Fixed multiple security vulnerabilities. (Synology-SA-22:01)

(2021-09-01)

Important Note

1. DSM 6.2.4-25556-2 is updated on September 1 to fix the issues below.
   • Fixed an issue where the Synology Account sign-in status at Control Panel > QuickConnect was incorrectly shown as not signed in.
   • Fixed an issue where exFAT Access package installation might fail.
   • Fixed an issue where users couldn't use SSH transfer encryption for Shared Folder Sync tasks.
   • Fixed an issue where Active Insight might not be able to automatically collect and transfer diagnostic data when users submitted technical support forms.
2. Disables the "Shut down UPS when the system enters Safe Mode" option by default.
3. Audio Station must be updated to version 6.5.6-3377 or above to be compatible with this update.
4. Media Server must be updated to version 1.8.1-2876 or above to be compatible with this update.
5. Surveillance Station must be updated to version 8.2.9-6459 or above to be compatible with this update.
6. Virtual Machine Manager must be updated to version 2.4.1-9259.

What's New

1. Added support for Synology Active Insight, which provides an option for automatic delivery of diagnostic data to Synology Technical Support upon submission of a support ticket for a faster troubleshooting process. This option is configurable at DSM > Support Center.
2. Added log entries for drive removal.

Fixed Issues

1. Fixed an issue where the domain group list wasn't updated correctly.
2. Fixed an issue where administrator users couldn't sign in to DSM after they reset their password by pressing the RESET button.
3. Fixed an issue where all input fields across DSM were auto-filled with DSM account name if users had had Google Chrome remember their password with the Autofill function.
4. Fixed an issue where Finder might stop responding when users search for content within mounted folders on macOS Big Sur 11.1 and 11.2.
5. Fixed an issue where after users updated to DSM 6.2.4, iSCSI targets mapped with LUNs created on DSM 6.0 and before became offline and couldn't be enabled.
6. Fixed an issue where signing in via 2-step verification generated an extra log entry.
7. Fixed an issue where deleted files from the home folder couldn't be found in the recycle bin if deleted via SMB.
8. Fixed an issue where there is a slight possibility that the SMB service might be shortly disconnected the moment users apply SMB setting modifications.
9. Fixed an issue where backing up data on Windows using Windows Server Backup or other third-party software to Synology NAS might fail after users updated their Windows with updates released since April 2021.
10. Updated the OpenSSL setting in response to new rules of Let's Encrypt certificates.
11. Fixed an issue where there might be an incorrect IP conflict message for VLANs.
12. Fixed an issue where DHCP settings of one network interface might be wrongly applied to another interface whose DHCP settings hadn't been enabled.
13. Fixed an issue where CMS-managed servers might disconnect from a CMS Host that has been updated to DSM 6.2.4.
14. Adjusted the LED indicator behavior for drive hibernation and deep sleep, making the LED status easier to distinguish on the following 15-series and 16-series models: DS916+, DS716+II, DS716+, DS416, DS416play, DS415+, DS415play, DS216+II, DS216+.
15. Fixed an issue where the UPS server might not function properly after the system reboot.
16. Refines the description for abnormal S.M.A.R.T test results and specifies the problematic S.M.A.R.T attributes.
17. Fixed an issue where the system might not obtain the compatibility information of hot-swapped drives on expansion units.
18. Fixed an issue where Western Digital hard drives couldn't be detected upon bootup on the following models: RS4017xs+, RS3618xs, RS3617xs+, RS3617RPxs, DS3617xsII, DS3617xs.
19. Fixed an issue where the fan couldn't resume in full speed mode after a system reboot on models with the V1000 platform.
20. Fixed an issue where memory module error messages weren't displayed properly.
21. Enhanced the system performance when there is a large number of concurrent connections.
22. Fixed an issue where when the "Get user/group lists with NT4-compatible mode" option is enabled, domain users might not be able to sign in to Synology Contacts.
23. Fixed an issue where 15-series and newer models couldn't hibernate when there is a system error, such as a storage issue and hardware malfunction.
24. Adjusted the fan speed on SA3400 and SA3600 to fix a potential overheating issue when E10G18-T2 is installed.
25. Fixed an issue where users couldn't expand the LUNs on ext4 volumes that are already mapped to iSCSI Targets.
26. Adjusted the fan speed to fix a potential overheating issue when a Synology network interface card (E10G18-T1, E10G18-T2, E10M20-T1, E10G21-F2, E25G20-F2) is used as the Heartbeat connection in an SHA cluster or for Open vSwitch.
27. Fixed an issue where the system couldn't retrieve the full name of domain groups correctly after users click "Update domain data".
28. Fixed an issue where the status of domain users couldn't be displayed properly when the status is "lockout".
29. Fixed multiple security vulnerabilities regarding Samba (CVE-2020-14318, CVE-2020-14323, CVE-2020-14383, CVE-2020-27840, CVE-2021-20277).
30. Fixed multiple security vulnerabilities. (Synology-SA-21:22)

(2021-04-01)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 6.2.4 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where the system might not be able to install or run some services successfully after being updated to DSM 6.2.4.

(2023-05-04)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update includes fixes to the below issues mentioned in 6.2.4-25554.
   • Fixed an issue where external hard drives couldn't wake from hibernation on certain platforms (Grantley, Broadwell, Broadwellnk, Purley).
   • Fixed an issue where users could not sign in to Synology mobile apps after they had cleared the remembered device list in DSM 6.2.4.
3. This update will restart your Synology NAS.
4. Integrates the beep control options for degraded/crashed volumes and abnormal SSD caches.
5. The new LED indicator behavior makes the system status easier to distinguish on 15-series and newer models. (Learn more)
6. DNS Server must be updated to version 2.2.3-5028 or above to be compatible with this update.
7. LDAP Server must be updated to version 2.4.49-2515 or above to be compatible with this update.

Compatibility & Installation

1. Enhanced the password policy. Passwords must exclude usernames and descriptions, include both upper-case and lower-case letters as well as numerical digits. The minimum password length is 8 characters.
2. Fixed a compatibility issue between the Geminilake platform and virtual machines running Windows 10.
3. On a newly installed version of DSM, file rename and deletion log events for SMB will be enabled by default.

What's New

1. Users can now set 10 email addresses to receive system notifications.
2. Enhanced domain database synchronization performance by syncing only altered data.
3. Supports bad block detection on Synology SSDs.
4. Supports the updating of Synology HDD and SSD firmware directly via DSM.
5. Improved fan speed control based on the Synology network interface card temperature for 19-series and newer models.

Fixed Issues

1. Fixed an issue where the "Enable Web Assistant" option didn't work on NVR216 and NVR1218.
2. Fixed an issue where the date and time formats for scheduled tasks were inconsistent in the widget and system settings.
3. Fixed an issue where scheduled tasks may fail to be executed or modified.
4. Fixed an issue where tasks scheduled at a high frequency generated a lot of logs and occupied system partitions.
5. Fixed an issue where the custom welcome text may differ on the preview and actual login page due to character limits.
6. Fixed an issue where data could still be written to LUNs after the volume runs out of space.
7. Fixed an issue where if Wi-Fi dongles are installed, some available network interfaces weren't listed when users edit iSCSI targets.
8. Fixed an issue where iSCSI services may be unstable when the host is too busy or when users disable iSCSI targets and ending sessions simultaneously.
9. Fixed an issue where initiators couldn't connect to the iSCSI target after ethernet interfaces reconnect in a high-availability cluster.
10. Fixed an issue where packages may not operate properly when drives migrated from another Synology NAS cause volume ID conflicts.
11. Fixed an issue where users may not be able to find their Synology NAS in My Network Places on Windows when WS-Discovery isn't operating properly.
12. Fixed an issue where Log Center didn't record recycle bin enabling/disabling events.
13. Fixed a security vulnerability regarding Sudo. (Synology-SA-21:02)
14. Fixed multiple security vulnerabilities. (Synology-SA-21:03)

Limitations

1. In response to the enhancement of domain database synchronization efficiency, the domain user/group list will be updated once an hour when it is created with Synology Directory Server.

(2021-02-23)

Important Note

1. This update is recalled on March 8, 2021, because of an issue where external hard drives couldn't wake from hibernation on certain platforms (Grantley, Broadwell, Broadwellnk, Purley). The issue is fixed in version 6.2.4-25556.

(2020-12-16)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 6.2.3 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Compatibility & Installation

1. Photo Station must be updated to version 6.8.14-3501 or above to be compatible with this update.

What's New

1. Enhanced NFSv4 connection stability.
2. Increased the maximum number of IP camera channels on FS6400 to 150.

Fixed Issues

1. Fixed an issue where support ticket submissions might fail in a certain version of Google Chrome.
2. Fixed an issue where Windows 10, version 2004 virtual machines might fail to power on when users select UEFI as the firmware.
3. Fixed an issue where there might be network disconnections on Virtual DSM.
4. Enhanced the stability of SSD caches when multiple processes are accessing the same cache at the same time.
5. Fixed an issue where CMS managed servers might not connect to the CMS host after they restarted.
6. Fixed an issue where disks in Resource Monitor performance charts were not displayed in the correct sequence. Affected models include:
   • 21-series: DS1621+
   • 20-series: FS6400, DS1520+, DS920+, DS720+, DS420+, DS220+
7. Fixed an issue where when users access files on DSM using Windows software via SMB, system performance might be affected. This is because of Windows software's continuous attempts to access the shared folders to which it has no permissions.
8. Fixed an issue where Windows File Explorer might not update file deletion or removal in real time when folders are mounted via SMB.
9. Fixed an issue where the system might not report the power status correctly on SA3200D.
10. Fixed an issue where the setting pages after first-time DSM installation might not launch on Synology NAS models with multiple LAN ports.
11. Fixed an issue where users were not able to empty the recycle bin of the "usbshare" shared folder.
12. Fixed an issue where administrators were not able to change the "User must change password at next logon" setting via Windows RSAT.
13. Fixed an issue where domain users could not be added to built-in groups via Windows RSAT.
14. Fixed an issue where enabling the "Collect debug logs" option for SMB might result in excessive system space usage.
15. Fixed an issue where the system might send incorrect port forwarding notifications after a restart.
16. Fixed an issue where SHA-1 certificates might disappear when users click "Upgrade certificate".
17. Fixed an issue where DSM might block users' IP addresses and create excessive logs when they tried to sign in after re-installing DSM.
18. Fixed an issue where incorrect drive compatibility information was displayed after drive migration.
19. Enhanced the stability of network interface cards on certain models.
20. Fixed an issue where links in password reset emails did not work when the URLs exceed the maximum length.
21. Fixed an issue where packages did not update automatically due to dependency problems.
22. Enhanced SAS controller stability during system shutdowns.
23. Fixed multiple security vulnerabilities. (Synology-SA-20:26)
24. Supports Let's Encrypt ISRG certificates.

(2020-07-16)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 6.2.3 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New

1. Added support for Synology Expansion Unit FX2421.

Fixed Issues

1. Fixed the issue where a DS920+ or DS720+ might not enter hibernation when its connected expansion unit has entered deep sleep.
2. Fixed the issue where drive status LED indicators on a connected expansion unit might not work properly when the expansion unit wakes up from deep sleep.
3. Fixed the issue where daylight saving time might not display correctly in certain time zones (e.g., Dublin, Casablanca).
4. Fixed the issue where mounted remote shared folders on a Synology NAS may cause volumes to operate improperly or the Synology NAS unable to shut down in certain scenarios.
5. Fixed the issue where the system might incorrectly prompt "drive slot disabled” notice when a DS413 or DS213+ wakes up from deep sleep.
6. Enhanced the performance in writing a large number of files to a Btrfs volume with RAID 1 configuration using hard disk drives (HDD).
7. Fixed the issue where Synology Universal Search and Synology Drive might consume excessive CPU resources when the option "Utilize unused memory as database cache to improve (search) performance" has been enabled.
8. Fixed the issue where domain-related services might not resume working because the update of domain data could not be complete.
9. Fixed security vulnerabilities (Synology-SA-20:18).
10. Fixed the issue where the system might incorrectly prompt IP address conflict warning if a network interface card is attached to Synology NAS and the option "Reply to ARP requests if the target IP address is a local address configured on the incoming interface" is disabled.
11. Fixed the issue where the status of an Ethernet port might not be detected properly when the Ethernet port is not connected to a network cable while Open vSwitch has been enabled.

(2020-06-09)

Important Note

1. Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to manually update it. Only Synology NAS with DSM 6.2.3 installed can be updated to this version.
   • The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
   • The update is not required for your Synology NAS. Synology NAS will automatically run a checklist, which checks the services and system configurations, to determine whether this update is required.

Fixed Issues

1. Fixed the issue where Storage Manager might display an incorrect warning when the size of a storage pool is over 16 TB on certain 32-bit models.

(2020-05-13)

Important Note

1. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly. If you want to update to the latest version now, please go to Download Center and manually update your DSM.
2. This update includes fixes to the below issues mentioned in 6.2.3-25423.
   • Fixed the issue where the automatic mounting of encrypted shared folders might result in the loss of indexing rules and the failure of the search function.
   • Fixed the issue where the Synology NAS equipped with NVMe device might be woken up from hibernation by the update of NVMe device's health status cache.
3. This update will restart your Synology NAS.
4. Removed the support for Google Cloud Print in DSM 6.2.3 and above.
5. To avoid the interruption of iSCSI service, the automatic DSM update and your power schedule to shut down may not be executed as expected if there are any active iSCSI sessions.
6. Removed TWNIC from the list of DDNS service providers on DSM 6.2.3 since TWNIC will stop accepting new registrations for DSM as of Jul. 1, 2020. Your current TWNIC DDNS services can still be used and edited but will not be available again once deleted from DSM.
7. This is the last major DSM version (6.2) that supports the video conversion to .flv and MPEG-4 Part 2 on certain models (RS814, RS214, DS414, DS414slim, DS414j, DS216se, DS215j, DS214+, DS214, DS214se, DS213j, DS120j, DS119j, DS115, DS115j, and DS114) in consideration of the termination of Adobe's support for Flash Player by the end of 2020.

What's New in DSM 6.2.3

1. Thin Provisioning LUN will become protected upon insufficient volume space, preventing clients from writing data to the LUN while allowing read-only access to the existing data.
2. Added support for domain users to sign in to DSM using a UPN (user principal name) via file protocols (including SMB, AFP, FTP, and WebDAV).
3. Added support for the option of forcing password changes for importing local users.
4. Enhanced the compatibility of the imported user list, providing clearer error messages when the imported file contains syntax errors.
5. Added support to record only the events of SMB transfer selected by the user, providing transfer logs that meet the requirements more closely.
6. Added support for client users to monitor the changes of subdirectories under shared folders via SMB protocol.
7. Added details of desktop notifications to facilitate users' timely responses.
8. Added support for external UDF file system devices.
9. Added support for the Open vSwitch option in a high-availability cluster.
10. Added support for IP conflict detection, providing logs and notifications accordingly.
11. Added support for Let's Encrypt wildcard certificates for Synology DDNS.
12. Added support to waive the need of DSM login again through an HTTPS connection after a change in client's IP address.
13. Added support for hardware-assisted locking for Thick Provisioning LUN on an ext4 volume.
14. Added support for customized footer message on DSM login pages.

Fixed Issues

1. Fixed the issue where certain cities might be mapped to incorrect time zones.
2. Fixed the issue where LDAP users could not be notified of the upcoming password expiration.
3. Fixed the issue where the upload of LDAP certificate could not overwrite the original one with the same file name.
4. Fixed the issue where the application permissions settings might not be applied properly to the Domain Users group when such group in Windows AD domain was named other than "Domain Users".
5. Fixed the issue of inaccurate time of usage history in Resource Monitor.
6. Improved system responsiveness by reducing the latency of the Btrfs file system in certain scenarios.
7. Fixed the issue where SNMP did not provide the indices of Disk and RAID correctly.
8. Fixed the issue where the recycle bin of an encrypted shared folder might not be emptied properly.
9. Enhanced the DSM login performance for multiple concurrent logins.
10. Adjusted the personal notification mechanism to comply with the latest Gmail API.
11. Fixed the issue where the iSCSI service might be interrupted when the LUN backup task is stopped.
12. Removed the function of expanding the capacity of a block LUN.
13. Fixed security vulnerabilities (Synology-SA-19:33, Synology-SA-19:35, Synology-SA-19:37, Synology-SA-20:06, Synology-SA-20:18).

Known Issues & Limitations

1. Due to Apple's new security requirements for trusted certificates, after a DSM update from an older version, the access to DSM via HTTPS using Google Chrome on a client device running macOS 10.15 might fail because of a certificate error. You may renew the default certificate on the Synology NAS to resolve this issue.
2. To run Centralized Management System (CMS) on Surveillance Station after updating to DSM 6.2.3-25426, Surveillance Station 8.2.7 or above is required.

(2020-04-15)

Important Note

1. This update has been recalled on May 13, since the automatic mounting of encrypted shared folders might result in the loss of indexing rules and the failure of the search function. The issue has been fixed in 6.2.3-25426.

(2020-01-14)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New

1. Added Power Recovery function to allow the controllers or system to start up automatically once power has been restored if they previously shut down owing to an unexpected power outage.
2. Support for the configuration of date and time formats in personal account settings and Control Panel.

(2020-03-17)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New

1. RS4017xs+ now supports D4EC-2666-16G memory module.

Fixed Issues

1. Improved drive migration compatibility for certain combinations of devices and DSM versions.
2. Improved the stability of iSCSI sessions on VMware hosts running EXSi 6.7 U3.
3. Fixed an issue where the system might unexpectedly reboot when users run remote virtual machines on certain models in an unstable network environment.

(2020-01-15)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the compatibility of M.2 NVMe SSD devices.

(2019-11-05)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed the issue where the LED indicators on the drive slots of DS118, DS218, DS218play, DS418, DS418j, and RS819 might not work properly.
2. Fixed the issue where the certificate might not work properly when the renewal has failed.
3. Fixed the issue where manually renewed certificates may not be applied to certain services.
4. Fixed a security vulnerability regarding Net-SNMP (CVE-2018-18066).
5. Fixed multiple security vulnerabilities regarding Nginx (Synology-SA-19:33).
6. Fixed multiple security vulnerabilities (Synology-SA-19:37).

(2019-08-21)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New

1. Updated the protocol of Let's Encrypt to ACME V2 to enhance the stability of the registration process.

Fixed Issues

1. Fixed the issue where the system might be unable to install a package during first time installation.
2. Fixed the issue where shared folders could not be accessed via the SMB protocol if the smb.conf file was manually modified for Final Cut Pro X.
3. Improved the performance of the SMB protocol by reducing CPU usage when Synology NAS joins a domain.
4. Fixed the issue where Integrated Windows Authentication (IWA) might not work again if the protocol has been disabled before.
5. Fixed the issue where the LED indicators on the drive slots of RS4017xs+ and RS2818RP+ might not work properly.
6. Adjusted the notification mechanism to comply with the latest Gmail API.
7. Fixed the issue where duplicate entries of the same login event might be recorded at Log Center.
8. Fixed the issue where applying non-default date formats at personal settings might result in additional date information being displayed.
9. Fixed the issue where adding a Synology NAS to CMS host might result in a frozen "Checking" status and the device would not be added successfully.
10. Fixed the issue where the storage capacity of a volume could not be expanded after it was migrated to a new Synology NAS with its corresponding SSD cache.

(2019-07-04)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.
3. In response to Gmail API changes, your DSM needs an update to this version to continue the functionality of sending notifications via Gmail. If you wish to skip this update, or if your Synology product model is not eligible to update to DSM 6.2, please refer to the following article which will guide you through the manual configuration: How to use Gmail SMTP server to send emails for DSM

What's New

1. Optimized the repair mechanism of RAID 6.
2. Enhanced the stability of Btrfs file system.
3. Enhanced the performance of the scheduled task to automatically empty the recycle bin.

Fixed Issues

1. Adjusted Gmail notification authentication mechanism to comply with the new Gmail API.
2. Fixed the issue where the public sharing link function might not work properly.
3. Fixed several issues which might result from the defective NVMe SSDs, such as system startup failure.
4. Fixed the issue where Google Chrome might autofill usernames and passwords into incorrect fields.
5. Fixed the issue where the encrypted shared folders could not be accessed under certain conditions.
6. Fixed the issue where the encrypted shared folders could not be mounted properly after system startup.
7. Fixed the issue where, after the restart of Synology NAS or the configuration of Synology High Availability, the domain service powered by Directory Server for Windows Domain might not work properly.

(2019-06-11)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where available DSM updates may not be displayed in Control Panel and Notification.
2. Fixed an issue where domain users may not be able to change their passwords when logging in through DSM.
3. Fixed an issue where joining DSM to LDAP server might fail.
4. Fixed an issue where accessing a path with special characters after enabling Mac special characters feature may result in permission error.
5. Fixed an issue where some packages' functions might fail due to file permissions being reset by Package Center.
6. Enhanced the stability of Btrfs file system under certain high I/O loading conditions.
7. Fixed an issue where there's a small chance that UPS might be disabled after rebooting.
8. Fixed an issue where reconnecting via CIFS in File Station might fail under unstable connection environment.
9. Changed the default option for system date and time format settings to YYYY-MM-dd and HH:mm respectively.
10. Fixed a security vulnerability regarding Samba (Synology-SA-19:23).
11. Fixed a security vulnerability regarding libxslt (CVE-2019-11068).

(2019-04-29)

Important Note

1. This update was re-released on Apr. 29 to fine-tune certain functionality and usability.
2. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.
3. This update will restart your Synology NAS.

What's New in DSM 6.2.2

1. Added the new Smart Update function and adjusted the update mechanism of DSM.
2. IHM now supports 14TB IronWolf and IronWolf Pro drives.
3. Added firmware update function of SAS controller on certain SAS models.
4. Added knowledge base article recommendations in the Support Center to help users with easy troubleshooting.
5. Domain users can now change their passwords upon DSM login when their passwords expire.
6. Added support for Integrated Windows Authentication.
7. Added support for Google LDAP services.
8. Added the new Low-Capacity Write function, which resumes LUNs from read-only status temporarily when a volume is running out of space.
9. Users can now select which advanced features to enable during iSCSI LUN creation.
10. Adjusted the warning mechanism in iSCSI Manager for insufficient volume space.
11. Added function to schedule the snapshot rotation in iSCSI Manager.
12. Added support for the configuration of date and time formats in personal account settings and Control Panel.
13. Supports SSD compatibility check on XS and FS series models.
14. Adjusted the notification mechanism for bad sectors.
15. Improved the calculating accuracy of SSD cache hit rate.
16. Users can now get a Let's Encrypt certificate automatically upon adding a new Synology DDNS.
17. Changed notification badges from numbers to red dots and modified display rules.

Fixed Issues

1. Fixed an issue where usage history may not show in Resource Monitor on certain models.
2. Fixed an issue where files cannot be re-uploaded after being deleted on macOS 10.13.
3. Fixed an issue where encrypted Excel files cannot be opened in Microsoft Office 2016 simultaneously on multiple macOS devices.
4. Shortened the time needed for domain and LDAP authentication via AFP.
5. Improved the stability of mounting exFAT external devices (exFAT package required).
6. Improved the stability of NFS protocol connection.
7. Improved the stability of Snapshot Replication when moving a large number of directories.
8. Enhanced the stability of Btrfs file system under certain high I/O loading conditions.
9. Enhanced vulnerabilities protection from KPTI to Spectre and Meltdown Protection for improved security. Applied models:
   • 18-Series : DS218+, DS418play, DS718+, DS918+, DS1618+, DS3018xs, RS2418+, RS2418RP+, RS2818RP+, FS1018
   • 19-Series : DS1019+, DS1819+, DS2419+, RS1619xs+
10. Fixed multiple security vulnerabilities regarding Linux kernel (CVE-2017-13168, CVE-2018-19824, CVE-2017-15649, CVE-2018-14634, CVE-2018-17182, CVE-2018-10853).
11. Fixed multiple security vulnerabilities regarding OpenSSL (CVE-2018-0732, CVE-2018-0737, CVE-2019-1559, CVE-2018-0734, CVE-2018-5407).
12. Fixed multiple security vulnerabilities regarding Spectre & Meltdown (Synology-SA-18:01).
13. Fixed multiple security vulnerabilities regarding OpenSSH (CVE-2019-6109, CVE-2019-6110, CVE-2019-6111, CVE-2018-20685).
14. Fixed a security vulnerability regarding SQLite (Synology-SA-18:61).
15. Fixed multiple security vulnerabilities regarding Samba (Synology-SA-18:47, Synology-SA-18:60).
16. Fixed multiple security vulnerabilities regarding Intel TXE and ME (Synology-SA-17:73).
17. Fixed multiple security vulnerabilities regarding Speculative (Synology-SA-18:23).
18. Fixed multiple security vulnerabilities regarding L1 Terminal Fault (Synology-SA-18:45).
19. Minor bug fixes.

(2019-02-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS if you are using the models listed below.
   • Plus Series : DS218+, DS718+, DS918+, DS1019+
   • Value Series : DS418play

Fixed Issues

1. Fixed an issue where abnormal reboot while converting SHR type or expanding SHR capacity may cause the storage volume not to be properly mounted.
2. Fixed an issue where the completion of Snapshot Replication under high load environment may result in abnormal reboot.
3. Minor bug fixes.

(2019-01-22)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Added selected 15- and 16-series models to DX517's compatibility list.
   • 16-series: DS916+, DS216+, DS216+II
   • 15-series: DS1815+, DS1515+, DS415+

(2018-12-27)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability (Synology-SA-18:64).

(2018-12-21)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Netatalk (Synology-SA-18:62).

(2018-12-11)

Important Note

1. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where the SSD cache auto-protection mechanism was not able to start automatically.
2. Fixed an issue where installing package creates unnecessary package backup that occupies system space.

(2018-10-16)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Improve Package Center system mechanisms to enhance user experience.
2. Enhanced the ext4 file system stability.
3. Fixed an issue where external hard drives of WD My Book might not be recognized if DSM is rebooted while the drives are in hibernation.
4. Fixed an issue where Microsoft Office files might not be renamed in Windows File Explorer through SMB protocol.
5. Fixed an issue where the HASP package might not be usable after upgrading to DSM 6.2-23739-2 and DSM 6.2.1-23824.
6. Fixed multiple security vulnerabilities regarding Linux kernel (Synology-SA-18:44).
7. Fixed a security vulnerability (Synology-SA-18:55).
8. Fixed a security vulnerability regarding wpa_supplicant (CVE-2018-14526).
9. Fixed a security vulnerability regarding OpenSSH (CVE-2018-15473).
10. Fixed multiple security vulnerabilities regarding Samba (CVE-2018-10858, CVE-2018-10919).

(2018-08-29)

Important Note

1. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.

2. After system upgrades to DSM 6.2.1, the HASP package will not be supported.

3. This update will restart your Synology NAS.

4. For the following models, DSM 6.2 will be the last upgradable version. DSM 6.2 will continue to receive critical and security updates until June 2023 after the official release. Please refer to the DiskStation Manager Life Cycle section in Synology Security White Paper.

   • XS Series : RS3412xs, RS3412RPxs, RS3411xs, RS3411RPxs, DS3612xs, DS3611xs
   • Plus Series : RS2212+, RS2212RP+, RS2211+, RS2211RP+, RS812+, RS812RP+,　DS2411+, DS1812+, DS1512+, DS1511+, DS712+, DS412+, DS411+II, DS411+, DS213+, DS212+, DS211+, DS112+
   • Value Series : RS812, RS212, RS411, DS413, DS411, DS213, DS212, DS211, DS112, DS111
   • J Series : DS413j, DS411j, DS411slim, DS213air, DS212j, DS211j, DS112j
   • Others : NVR216, NVR1218, DDSM

What's New in DSM 6.2.1

1. Space reclamation speed of legacy Advanced LUNs is now adjustable.

2. You can now convert legacy Advanced LUNs into new Advanced LUNs, which come with instant snapshots and performance improvements.

3. Added password strength meter for creating and modifying passwords.

4. When you install or upgrade your DSM version through the Internet, it will now automatically be upgraded to the corresponding DSM version with critical and security updates. The following models are not available due to hardware performance limitations.

   • 11 series: RS411, DS411slim, DS411j, DS411, DS211j, DS211+, DS211, DS111
   • 12 series: RS812, RS212, DS212j, DS212+, DS212, DS112j, DS112+, DS112
   • 13 series: DS413j, DS413, DS213j, DS213air, DS213+, DS213
   • 14 series: RS814, DS414slim, DS414j, DS414, RS214, DS214se, DS214+, DS214, DS114
   • 15 series: RS815, DS215j, DS115j, DS115
   • 16 series: DS216se

Fixed Issues

1. Fixed an issue where users may not be able to delete snapshots when the volume is full.

2. Fixed an issue where Windows may falsely detect an error on an exFAT format USB drive after it is used as the backup destination of Hyper Backup.

3. Improved Snapshot Replication package stability.

4. Fixed an issue where incorrect or incomplete update information may be displayed in the DSM Update tab.

5. Fixed an issue where a single RAID with over 24 drives may fail to assemble a RAID 5/6/F1 or SHR 1/2 storage pool.

6. Fixed an issue where boot failure might occur if the system was rebooted during the conversion process from RAID 5 to RAID 6.

7. Enhanced the compatibility of certain drives on Synology NAS and Expansion Unit models.

8. Fixed an issue where local users may fail to log in via SMB on specific Windows versions after adding their NAS to a Synology Active Directory domain.

9. Improved Windows client's clock synchronization with DSM after it is added to a Synology Active Directory domain. Upgrading Active Directory Server to version 4.4.5-0077 or above is required.

10. Modified HDD hibernation mechanism to prevent HDDs from entering hibernation when a volume is degraded, crashed, or not created.

11. Adjusted the default range of passive FTP/FTPS ports to align with maximum concurrent connections of each model.

12. Fixed multiple security vulnerabilities regarding Linux kernel (CVE-2018-1000199, CVE-2018-8897, CVE-2017-0861).

13. Fixed a security vulnerability regarding OpenSSL (CVE-2018-0739).

14. Fixed a security vulnerability regarding procps-ng (CVE-2018-1124).

15. Fixed a security vulnerability regarding ISC DHCP (CVE-2017-3144).

16. Fixed multiple security vulnerabilities (Synology-SA-18:51).

17. Minor bug fixes.

(2018-07-12)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

2. This update will restart your Synology NAS if you are using the models listed below.

   • XS Series : RS2818RP+, RS3618xs, RS2418RP+, RS2418+, FS1018, DS3018xs, RS818RP+, RS818+, FS3017, FS2017, RS4017xs+, RS3617xs, RS3617RPxs, DS3617xs, RS3617xs+, RS18017xs+, RS2416RP+, RS2416+, RS18016xs+, DS3615xs, RC18015xs+, RS815RP+, RS815+, RS3614xs, RS3614RPxs, RS3614xs+, RS3413xs+, RS10613xs+, DS3612xs, RS3412xs, RS3412RPxs, DS3611xs, RS3411xs, RS3411RPxs

   • Plus Series : DS1618+, DS918+, DS718+, DS218+, DS1817+, DS1517+, DS2415+, DS1815+, DS1515+, DS415+

   • Value Series : DS418play

   • Others : VirtualDSM, DDSM

Fixed Issues

1. Adjusted power saving mechanism to improve PCIe compatibility.
2. Fixed multiple security vulnerabilities regarding Linux kernel (Synology-SA-18:01).
3. Fixed an issue where iSCSI Manager might not open for the incompatible format of iSCSI LUN configuration files set up before DSM 5.2.
4. Enhanced package start-up performance.
5. Fixed a security vulnerability (Synology-SA-18:36).

(2018-06-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Linux kernel (CVE-2018-8897).
2. Enhance the performance of Surveillance Station when deleting recordings in btrfs volume.
3. Fixed multiple security vulnerabilities (Synology-SA-18:33).
4. Fixed an issue where VAAI might fail after iSCSI LUN was recovered by LUN Backup.
5. Fixed an issue where LUN configuration might be inconsistent.
6. Minor bug fixes.

(2018-05-24)

Important Note

1. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.

Compatibility and Installation

1. DSM 6.2 can only be installed on Synology products running DSM 6.0 and above.

2. Starting from DSM 6.2, the core replication function is centrally managed by a new package, Replication Service. Packages with replication feature, such as Snapshot Replication, must install the Replication Service package.

3. For the following models, DSM 6.2 will be the last upgradable version. DSM 6.2 will continue to receive critical and security updates until June 2023 after the official release. Please refer to the DiskStation Manager Life Cycle section in Synology Security White Paper.

   • XS Series : RS3412xs, RS3412RPxs, RS3411xs, RS3411RPxs, DS3612xs, DS3611xs

   • Plus Series : RS2212+, RS2212RP+, RS2211+, RS2211RP+, RS812+, RS812RP+, DS2411+, DS1812+, DS1512+, DS1511+, DS712+, DS412+, DS411+II, DS411+, DS213+, DS212+, DS211+, DS112+

   • Value Series : RS812, RS212, RS411, DS413, DS411, DS213, DS212, DS211, DS112, DS111

   • J Series : DS413j, DS411j, DS411slim, DS213air, DS212j, DS211j, DS112j

   • Others : DDSM

What’s New in DSM 6.2

1. DSM

   • For easier management, Key Manager can now be stored locally on Synology NAS. Encrypted shared folders can be auto-mounted without the need of a USB drive. (To achieve better data protection, users are suggested to store Key Manager on an external USB drive.)
   • Standard users can now right-click on shared folders in File Station to view Properties.
   • Added support for IBM WebSphere SSO.
   • Enhanced password strength policy for better account security.
   • Added support for a new SMS provider SendinBlue and Clickatell API (RESTful).
   • Added support for Thai language.
   • Updated Privacy Statement and related settings in the installation flow.

2. iSCSI Manager

   • Brand new iSCSI Manager built for IT administrators, providing a new management user interface for an optimized iSCSI management and monitoring experience.
   • Advanced LUN provides lightning-fast LUN snapshot creation and recovery, and LUN cloning within seconds, as well as VAAI/ODX, storage acceleration commands, and support for better VM performance. Since Advanced LUNs can utilize file system cache to provide better efficiency, block-level LUNs will no longer be supported on DSM 6.2 and onward. DSM 6.2 will still be compatible with the block-level LUNs upgraded from DSM 6.1 and prior.
   • Supports cross-volume LUN clones.
   • Added support for network binding settings to allow each iSCSI target to map to a network interface.
   • Users can now disable storage reclamation for thin-provisioned LUNs to enhance I/O performance.

3. Storage Manager

   • The brand new Overview shows the health status of all storage components on your NAS, displaying a clearer and better look on the system overview.

   • Introduced Storage Pool, a new storage component, to replace the original Disk Group and RAID Group, and rearrange storage-related functions to provide users with a more consistent and smoother experience.

   • Smart Data Scrubbing detects the supported file system and RAID type to perform data scrubbing automatically while enhancing data scrubbing usability. A new built-in scheduler allows users to do data scrubbing periodically with just a few clicks, improving data integrity and consistency.

   • RAID resync speed can now be adjusted to accommodate IT management needs.

   • Users can remotely deactivate drives via Storage Manager for better management.

   • Added a default monthly S.M.A.R.T. test on both new and existing drives that were not previously configured.

   • After each DSM upgrade, DSM will remind users if a bad sector or lifespan alert is not set up. 

   • The health status of disks is now uniform with storage pools and volumes.

   • Log Center now includes disk logs.

   • Provided an option to change stripe cache size when the RAID type of Storage pool is RAID 5, RAID 6, RAID F1, or SHR (three disks or above).

4. High Availability Manager 2.0

   • High Availability Manager has been modularized into a package to ensure better system maintenance and offers greater update  flexibility.

   • New mechanism can now eliminate unnecessary system reboot during major update to keep your cluster secure and maintain high service availability.

   • SHA 2.0 can handle situations more effectively especially when the servers are in a vulnerable state.

   • A simpler yet more intuitive user interface,  offering you a comprehensive cluster overview and management.

   • The new interface design provides more detailed and visual information as well as easy-to-follow solutions.

   • Brand new user interface is introduced to display more details of both active server and passive server, giving you an in-depth system utilization overview. 

   • When first creating SHA cluster, user new to SHA can choose to only replicate system configuration to shorten setup time.

5. Extended Btrfs File System Coverage

   • Btrfs file system is now available on more Synology NAS models utilizing ARM platforms. Enjoy the powerful features of the next-generation file system.

   • Applied Models:

     • 18-series: DS218, DS418 and more x18 series to come. 

6. Azure AD support

   • Added the capability to join existing Azure AD as an SSO client. Utilizing the single sign-on feature, daily productivity is increased by saving time spent on re-authentication.

7. Security Advisor

   • User login details and abnormal geolocation information are dissected using intelligent analysis techniques and reported via DSM notifications. 

   • Daily and monthly reports provide more comprehensive information, allowing IT administrator to review abnormal activity and security scan regularly.

8. TLS/SSL Profile Level

   • An advanced way to configure your security level profile based on different services to meet different security level requirements, providing flexibility to suit your network security requirements.

9. 2-step authentication

   • Synology NAS administrators must set up an email notification when 2-step authentication is enabled.

10. Domain/LDAP management

    • Flexibly assign specified domain groups with admin privileges.

11. FTP

    • Added ECDSA certificate support for FTPS connections.

12. NFS

    • Added NFS v4.1 multipathing for load balancing and network redundancy to fully support VMware vSphere® 6.5.

    • Applied models:

      • 18-series : DS3018xs, DS418play, DS918+, DS418j, DS418, DS718+, DS218+
      • 17-series : FS3017, FS2017, RS4017xs+, RS3617xs, RS3617RPxs, DS3617xs, RS3617xs+, RS18017xs+, DS1817+, DS1817, DS1517+, DS1517, RS217
      • 16-series : RS2416RP+, RS2416+, RS18016xs+, DS416play, RS816, DS916+, DS416slim, DS416j, DS416, DS216play, DS716+II, DS716+, DS216j, DS216+II, DS216+, DS216, DS116

13. Package Center

    • The brand new user interface design brings a more intuitive experience and allows users to quickly find everything they need.

14. IHM tool

    • Added Seagate IronWolf Health Management (IHM) support on DS118, DS218play, DS418j and DS418.

Known Issues & Limitations

1. DSM 6.2 is the last DSM version supporting IPv6 Tunneling in Network Interface.

2. The Fedora utility will not be supported after DSM 6.2.

3. Starting from DSM 6.2, the USB device drivers, including printers, cloud printers, DAC/speakers, Wi-Fi dongles, DTV dongles, LTE dongles, and Bluetooth dongles will no longer be updated.

4. Wi-Fi dongle does not support Parental Control and Device List if set as Bridge Mode.

5. Starting from DSM 6.2 Beta, Virtual Machine Manager will no longer support creating clusters with older DSM versions. Please update each host in the cluster to the same DSM version or above versions for the Virtual Machine Manager cluster to operate properly.

6. SSH authentication by DSA public key is prohibited for security concerns.

7. When logging in through VPN or Proxy server, some functionalities may have authentication issues. To fix this issue, please go to Control Panel > Security, and click the Trusted Proxies button to add the trusted proxy server to the list.

8. The original RAID scrubbing scheduled tasks will be migrated to Smart Data Scrubbing scheduled tasks. If the upgrade is performed while running scheduled tasks, the Data Scrubbing process will automatically be re-executed shortly after the upgrade is completed. 

9. Office 2.x and below are not compatible with DSM 6.2. 

(2019-01-02)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Netatalk (Synology-SA-18:62).
2. Fixed a security vulnerability (Synology-SA-18:64).

(2018-07-12)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

2. This update will restart your Synology NAS if you are using the models listed below.

   • XS Series : RS2818RP+, RS3618xs, RS2418RP+, RS2418+, FS1018, DS3018xs, RS818RP+, RS818+, FS3017, FS2017, RS4017xs+, RS3617xs, RS3617RPxs, DS3617xs, RS3617xs+, RS18017xs+, RS2416RP+, RS2416+, RS18016xs+, DS3615xs, RC18015xs+, RS815RP+, RS815+, RS3614xs, RS3614RPxs, RS3614xs+, RS3413xs+, RS10613xs+, DS3612xs, RS3412xs, RS3412RPxs, DS3611xs, RS3411xs, RS3411RPxs

   • Plus Series : DS1618+, DS918+, DS718+, DS218+, DS1817+, DS1517+, DS2415+, DS1815+, DS1515+, DS415+

   • Value Series : DS418play

   • Others : VirtualDSM, DDSM

Fixed Issues

1. Adjusted power saving mechanism to improve PCIe compatibility.
2. Fixed a security vulnerability (Synology-SA-18:36).

(2018-06-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Linux kernel (CVE-2018-8897).
2. Fixed multiple security vulnerabilities (Synology-SA-18:33).
3. Fixed a security vulnerability regarding Procps-ng (CVE-2018-1124).
4. Minor bug fixes.

(2018-05-23)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. Updated Privacy Statement

Fixed Issues

1. Improve stability of Docker when using Btrfs under low memory configurations.
2. Improved stability of the snapshot replication feature.
3. Enhanced stability of MCS in Windows environments.
4. Fixed an issue where a file’s Last Opened Date may be incorrect when using Spotlight.
5. Fixed an issue where enabling SSD Trim may cause file services failure in a high-availability cluster.
6. Fixed an issue fan where changes to speed settings do not apply immediately in a high-availability cluster.
7. Fixed a security vulnerability regarding Wget (CVE-2018-0494).
8. Fixed a security vulnerability regarding PostgreSQL (CVE-2018-1058).
9. Fixed a security vulnerability regarding Linux kernel (Synology-SA-18:21, CVE-2018-1000199).

(2018-04-12)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where Drive might not work properly when the indexing rules have been changed.
2. Fixed an issue where certain functions in Package Center might not work properly on Synology NVR products.

(2018-03-27)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where iSCSI service may stop under Windows cluster environment.
2. Fixed an issue where the history record of Resource Monitor may not be updated.
3. Fixed an issue where Korean files may not be read by HFS+.
4. Fixed a security vulnerability regarding p7zip (CVE-2017-17969).
5. Fixed multiple security vulnerabilities regarding NTP (Synology-SA-18:13).
6. Fixed multiple security vulnerabilities regarding Linux kernel (CVE-2017-15649, CVE-2017-17712).
7. Fixed a security vulnerability regarding isc-dhcp (CVE-2018-5732).
8. Fixed multiple security vulnerabilities regarding Samba (Synology-SA-18:08).
9. Fixed multiple vulnerabilities (Synology-SA-18:14).

(2018-02-27)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Enhanced system stability.

(2018-01-31)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New in DSM 6.1.5

1. Added support for editing permissions to multiple groups and users to a single folder or file simultaneously in File Station.
2. Added Seagate IronWolf Health Management (IHM) support on DS118, DS218play, DS418j, DS418 and DS218.

Fixed Issues

1. Fixed an issue where the system may make a false alarm about hot spare disks when upgrading SHA.
2. Fixed a domain issue by allowing Synology NAS to join an existing domain with an ASCII password.
3. Enhanced system efficiency in calculating a large number of user and group privilege settings.
4. Enhanced SSD cache reliability.
5. Fixed the issue where setting notifications for low volume capacity is not available on 1-bay models.
6. Fixed an issue where converting a single volume to support multiple volumes may be misidentified as a crashed volume.
7. Fixed an issue where users may not be able to collapse and expand fieldsets on an SSD cache webpage with Safari 11 browser.
8. Fixed a security vulnerability regarding Linux kernel (CVE-2017-16939).
9. Fixed a security vulnerability regarding Samba (Synology-SA-17:72).

(2017-12-21)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where the scan results of Security Advisor may not be correct.

(2017-12-14)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where Block LUNs cannot be enabled after upgrading to DSM 6.1.4-15217-3.
2. Fixed an issue where Advanced LUNs larger than 2TB cannot be mapped to Targets after upgrading to DSM 6.1.4-15217-3.

(2017-12-15)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. This update is a repack to fix the iSCSI issues.

(2017-12-13)
Fixed Issues

1. Fixed multiple security vulnerabilities pertaining to OpenSSL (CVE-2017-3735, CVE-2017-3736, CVE-2017-3737, CVE-2017-3738).
2. Enhanced the stability of the Apollo Lake platform BIOS.
3. Fixed an issue with abnormal transfer rates for LUNs when backing up to an external storage device.
4. Fixed an issue where DSM may shutdown incorrectly when iSCSI Block LUN services are overloaded.
5. Improved the error handling mechanism for the SSD cache when volumes crash.
6. Enhanced the stability of the upgrade process for SHA clusters.
7. Enhanced volume expansion process stability after an improper shutdown.
8. Enhanced system efficiency for calculating large numbers of user and group privilege settings.
9. Fixed an issue where Microsoft Office documents may fail to save when Windows 10 Fall Creators Update is installed.

(2017-11-23)

1. Fixed multiple security vulnerabilities regarding Samba (Synology-SA-17:72 Samba).

(2017-11-13)

1. Fixed an issue where PPPoE cannot be displayed properly in Control Panel.

(2017-11-13)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New in DSM 6.1.4

1. Adjusted the threshold of remaining storage capacity warning to 10%.
2. Support 12TB IronWolf and IronWolf Pro drives with IHM.
3. Users with ACL permissions set as "administration" can edit shared folders in File Station.

Fixed Issues

1. Enhanced the compatibility of USB on certain models.
2. Enhanced the compatibility of SAS drives on certain models.
3. Fixed an issue where the response of user interface might slow down when using hotspares under certain circumstances.
4. Fixed user interface display issues to enhance the usability of Resource Monitor.
5. Fixed an issue where DSM mobile might not work properly on devices running Android 8.0.
6. Fixed an issue where administrator might not be able to log in DSM after removing clients from trusted client list.
7. Enhanced file system stability by backporting Kernel updates.
8. Enhanced the stability of RAID 5, RAID 6, RAID F1, and SHR.
9. Enhanced the compatibility of Windows AD and NFS protocol.
10. Fixed an issue where RAID Resync might slow down when creating or deleting multiple volumes.
11. Fixed an issue where users might be logged out or shared folders of mounted via AFP might be disconnected when changing permissions.
12. Fixed an issue where the background of login panel might be blurry when accessing DSM on Chrome browser.
13. Fixed an issue where users might not be able to collapse and expand nested sections on DSM webpage when using Safari 11 browser.
14. Fixed search results filters of File Station, AFP and SMB to ensure that users can only find files with read permissions in their search results.
15. Fixed multiple security vulnerabilities regarding Linux kernel (CVE-2017-10661, CVE-2017-10662, CVE-2017-10663).
16. Fixed a security vulnerability regarding Samba (CVE-2017-11103).
17. Fixed multiple security vulnerabilities regarding Wget (CVE-2017-6508, CVE-2017-13089, CVE-2017-13090).
18. Fixed a security vulnerability regarding XSS (CWE-79).
19. Fixed multiple security vulnerabilities regarding poppler library (CVE-2017-2820, CVE-2017-7511, CVE-2017-7515, CVE-2017-9408, CVE-2017-9775).
20. Fixed multiple security vulnerabilities regarding Samba (Synology-SA-17:57).

(2017-10-18)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities regarding WPA/WPA2 protocols for wireless connections (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13084, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088).

(2017-10-12)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced system stability on certain models:
   • DS918+
   • DS718+
   • DS218+
   • DS418play
2. Enhanced the stability when adding hard disks to expand RAID.

(2017-10-03)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities regarding DNSmasq (CVE-2017-13704, CVE-2017-14491, CVE-2017-14495, CVE-2017-14496).
2. Fixed multiple security vulnerabilities regarding DHCPv6 Server (CVE-2017-14492, CVE-2017-14493, CVE-2017-14494).

(2017-09-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced monitor mechanism of drive temperatures.
2. Enhanced compatibility of certain drives.
3. Improved the healing mechanism for possible cache device errors.
4. Enhanced file system stability by backporting Kernel updates.
5. Fixed an issue where DSM might not check updates properly when QuickConnect is enabled.
6. Enhanced the stability of DSM startup.
7. Fixed a security vulnerability regarding Bluetooth dongle (CVE-2017-1000250).
8. Fixed a security vulnerability regarding Linux kernel (CVE-2017-1000251).

(2017-09-06)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed HDD hibernation issues to enhance HDD compatibility.
2. Enhanced overall stability of iSCSI services.
3. Fixed compatibility issues with VMware environments.
4. Fixed multiple security vulnerabilities regarding Linux Kernel (CVE-2017-10661, CVE-2017-10662, CVE-2017-10663).
5. Enhanced the stability of RAID 5, RAID 6, SHR and RAID F1.

(2017-08-15)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a compatibility issue when using USB passthrough in Virtual Machine Manager.
2. Fixed security vulnerabilities regarding Linux kernel (CVE-2017-7533, CVE-2017-8890, CVE-2017-1000364, CVE-2017-1000365, CVE-2017-1000370, CVE-2017-1000371).
3. Enhanced the stability of iSCSI Block-Level LUNs.

(2017-07-26)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. BIOS update to improve system stability. Applied models: DS1515+, DS1517+, DS1815+, DS1817+, DS2415+, DS415+, RS2416+, RS2416RP+, RS815+, RS815RP+.
2. Enhanced USB 2.0 compatibility for DS415+, RS2416+, and RS2416RP+.

(2017-07-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding Samba (CVE-2017-11103).

(2017-07-13)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where some packages might not be repaired automatically.
2. Fixed an issue where the creation of SSD cache might fail on DS1817.
3. Fixed multiple issues regarding quota configuration for users in the administrators group.
4. Fixed an issue where the trusted domain might not display after the deletion and refresh of domain list.
5. Fixed an issue where a connection timeout might occur upon the access to file service page without any available external IP addresses.
6. Fixed an issue where DSM might fail to establish the network connection after reboot.
7. Fixed a security vulnerability regarding FFmpeg (CVE-2017-9993).
8. Fixed a security vulnerability regarding DSM login page (CVE-2017-9553, CVE-2017-9554).
9. Fixed a security vulnerability regarding Nginx (CVE-2017-7529).

(2017-07-10)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where the trusted domain might not display after the deletion and refresh of domain list.
2. Fixed a security vulnerability regarding FFmpeg (CVE-2017-9993).

(2017-06-29)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

2. This update will restart your Synology NAS.

What's New in DSM 6.1.2

1. Enhanced the write performance of encrypted shared folders when using the AFP.
2. Added support for DHCP server lease time to be measured in seconds.

Fixed Issues

1. Upgraded Samba to version 4.4.13, and fixed a security vulnerability (CVE-2017-2619).
2. Fixed an issue where some users might experience failure when updating domain data, and enhanced the speed of domain data updates.
3. Fixed an issue where users might experience failure when joining a domain.
4. Fixed an issue where volume creation might fail on some models.
5. Fixed an issue where SSD cache status might not be correctly reported via the SNMP.
6. Fixed an issue where SSD read-write cache might fail to be loaded when upgraded to a larger cache in RAID 1.
7. Enhanced the resource usage rate of passive servers on SHA clusters.
8. Enhanced the stability of the unmounting process for encrypted shared folders.
9. Fixed an issue where the L2TP connection service might not work properly for IPv6 clients.
10. Fixed an issue where MTUs might be incorrect after Bond is established on DSM.
11. Fixed an issue where the IPv6 service might not work properly.
12. Fixed an issue where gateway information might be lost when Bond is removed.
13. Refined the IronWolf Health Management (IHM) thresholds.
14. Fixed issue where some 4TB IronWolf drives were not detected when IronWolf Health Management (IHM ) was enabled.
15. Modified description of drive health status.
16. Fixed an issue where 32-bit models might not be properly repaired or expanded due to volume limits.

(2017-05-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding samba service (CVE-2017-7494).

(2017-05-23)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Linux kernel (CVE-2017-7308).
2. Enhanced the stability of DSM when establishing a network connection.
3. Fixed an issue where DNS server might fail to add IPv6 subnet.

(2017-05-09)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability (CVE-2017-7184).
2. Fixed an Ubuntu virtual machine system freeze issue on Virtual Machine Manager.
3. Enhanced the stability of iSCSI service.

(2017-05-02)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart Synology NAS models supporting SSD cache.

Fixed Issues

1. Fixed an issue where domain users/groups might be displayed incorrectly when a file ACL is checked via Samba.
2. Fixed an issue where users might experience failure or receive no response when updating domain data.
3. Fixed an issue where volumes might not function normally when read-write SSD cache is used with advanced iSCSI LUNs.
4. Fixed an issue where encrypted shared folders cannot be unmounted when connections with Samba clients have been established.
5. Fixed an issue where failure of installation or upgrade might occur in Package Center.

(2017-04-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New in DSM 6.1.1

1. This update includes all bug fixes as well as security fixes in the previously released updates since DSM 6.1.
2. Added support for scheduled RAID scrubbing.
3. Upgraded Samba to version 4.4.9.

Fixed Issues

1. Fixed an issue where the OTP might be requested repeatedly when users log in a same trusted device with different accounts.
2. Fixed an issue where File Station might not work properly when playing slideshows of photos without thumbnails if opened via Application Portal.
3. Fixed an issue where proxy settings cannot be changed when Let's Encrypt is in use.
4. Fixed an issue where packages cannot be repurchased after refunds.
5. Fixed an issue where Auto Block might fail to block addresses when the Allow List is set as an IP range.
6. Fixed an issue where the default gateway might not be updated when a DHCP client has not received DNS information.
7. Fixed an issue where firewall rules might not be displayed correctly when users add or remove rules on the same port.
8. Fixed an issue where UPnP rules might fail to work properly on Synology NAS with a single Ethernet port.
9. Fixed an issue where the DSM user interface might fail to be properly displayed when DHCP Server receives invalid DNS addresses.
10. Fixed an issue where L2TP connections might fail to be established in kernel 4.4 when the kernel mode is enabled.
11. Fixed an issue where an L2TP connection might fail to be established when the server address starts with a number.
12. Enhanced the usability and display correctness of the Wake on Lan user interface.
13. Fixed an issue where Synology NAS cannot be properly shut down when a bond has been established between Mellanox ConnectX-3 and Synology E10G17-F2.
14. Fixed an issue where DSM might show the message of volume crash upon reboot when a single-disk SHR volume has been mounted with cache and transformed into a Disk Group.
15. Fixed an incorrect volume display on some models where RAID Groups are supported and SHR has been enabled.
16. Fixed an issue where SHA cannot be created when FS3017 contains over 12 drives.
17. Fixed an issue where the settings of SMB encrypted transmission cannot be properly configured.
18. Fixed a connection error that might occur when the name of an SMB shared folder contains consecutive spaces.
19. Fixed an issue where Key Manager might fail to mount encrypted shared folders automatically on startup.
20. Enhanced the stability of the iSCSI service.
21. Fixed an issue where files cannot be written into encrypted shared folders on ext3 file system.
22. Fixed an issue where Snapshot Replication might fail when compression is enabled for shared folders.
23. Fixed an issue where DSM cannot be shut down properly on Qoriq or 88f6281/88f6282 platforms when JBOD volumes are in use.
24. Enhanced the stability of the upgrade process of SHA clusters.

(2017-04-13)

1. Supported new models DS1817+ & DS1517+.

(2017-03-22)

Fixed Issues

1. Fixed an issue where a high-availability cluster might unexpectedly switch over when the active server is busy.
2. Fixed an issue where SHA alternatively displays the message of availability/unavailability due to false alarm.
3. Fixed an issue where DSM cannot be joined into Windows AD domains after upgrading to version 6.1.
4. Fixed an issue where domain users cannot be edited on DSM after enabling Windows AD services.
5. Fixed an issue where LDAP users could fail to access files via the SMB protocol.
6. Fixed the compatibility issue of VMware with some file LUNs created on DSM 6.0 Beta.
7. Fixed an issue where an encrypted shared folder cannot be decrypted when the encryption key is set to maximum length.
8. Enhanced the stability of the iSCSI service.
9. Fixed an issue where Auto Block might fail to block addresses when the Allow List is set as an IP range.
10. Fixed an incorrect volume display on some models where RAID Groups are supported and SHR has been enabled.
11. Fixed an issue where Microsoft Office and Adobe documents cannot be opened on Windows after being accessed on macOS via the AFP protocol.
12. Improved the write performance of fragmented Btrfs volumes.
13. Added Seagate IronWolf Health Management (IHM) support on Broadwell-DE models.
14. Fixed the compatibility issue of WD WD8001FFWX with the DX1215 expansion unit.

(2017-02-25)

1. Fixed a security vulnerability with the Auto Block function that could allow remote attackers to bypass the current IP blocking mechanism.

(2017-02-21)

Compatibility and Installation

1. DSM 6.1 can only be installed on Synology products running DSM 6.0. Before starting, please log in to DSM and go to Control Panel > Update & Restore to install the latest DSM.
2. Time Backup and HiDrive Backup will not be supported in DSM 6.1 and above.
3. We can not guarantee the accuracy or completeness of third party packages, which are not developed by Synology.
4. Manual re-indexing is required for all files after upgrading to DSM 6.1. The file indexing service in Control Panel has been moved to the preference settings in Synology Universal Search.
5. Due to infrastructure update, packages will need re-initialization after upgrading to DSM 6.1. The process will occupy a higher CPU usage and can take up to an hour depending on the number of packages installed.
6. Directory Server package must be disabled (stop) in Package Center before the upgrade if the server is running on a High Availability cluster.
7. The DSM Help articles in the following languages have been removed: Brazilian Portuguese, European Portuguese, Norwegian, Turkish, Hungarian, Swedish, Danish. In all the packages, the Help articles in these six languages will also be removed.

What’s New in DSM 6.1 Official

1. Extended Btrfs File System Coverage

   • Btrfs file system is now available on more Synology NAS models. Enjoy the powerful features of the next-generation file system.
   • Applied models:
     • 17-series: RS3617xs+, RS3617xs, RS3617RPxs, DS3617xs
     • 16-series: RS18016xs+, RS2416+, RS2416RP+, DS916+, DS416play, DS716+II, DS716+, DS216+II, DS216+
     • 15-series: RC18015xs+, DS3615xs, DS2415+, DS1815+, DS1515+, RS815+, RS815RP+, DS415+
     • 14-series: RS3614xs+, RS3614xs, RS3614RPxs, RS814RP+, RS814+, RS2414RP+, RS2414+
     • 13-series: RS10613xs+, RS3413xs+, DS1813+, DS1513+, DS713+, DS2413+
     • 12-series: DS3612xs, RS3412xs, RS3412RPxs, RS2212+, RS2212RP+, DS1812+, DS1512+, RS812+, RS812RP+, DS412+
     • 11-series: DS3611xs, RS3411xs, RS3411RPxs,

2. File Self-Healing

   • DSM is now capable of detecting and repairing silent data corruption if your Synology NAS meets the following criteria:
     • Running Btrfs file system
     • Built on RAID 1, RAID 5, RAID 6, RAID 10, RAID F1 or non-1 disk SHR

3. Shared Folder Encryption

   • In addition to encrypting a shared folder as you create it, you can now encrypt an existing shared folder, including the "homes" folder, after its creation.
   • With Key Manager, you can now use a USB storage device as a physical key to mount encrypted shared folders automatically without having to memorize all the encryption keys.
   • Removed the "Mount automatically on startup" function from the edit page of shared folders.

4. Account Protection

   • More effective way to guard against brute-force attack
   • Users can set up the number of failed login attempts from trusted or untrusted devices within the specified time period.

5. Extended RAID F1 Support

   • RAID F1 is now available on more Synology NAS models to take advantage of the new RAID type designed for all flash.
   • Applied models:
     • 17-series: FS3017, RS3617xs+, RS3617xs, RS3617RPxs, DS3617xs
     • 16-series: RS18016xs+
     • 15-series: RC18015xs+, DS3615xs
     • 14-series: RS3614xs+, RS3614xs, RS3614RPxs
     • 13-series: RS10613xs+, RS3413xs+

6. File Services

   • Windows File Services and Mac File Services have been renamed SMB and AFP, respectively.
   • All SMB services (SMB1/2/3) are now running Samba 4.4.
   • Supports Time Machine via SMB3 in Mac OS 10.12 and above.
   • Supports Bonjour service, allowing you to back up data to multiple shared folders via Time Machine.
   • Supports sparse files over the SMB protocol to enhance usage efficiency of file system space and network bandwidth.
   • You can now restore to a previous version from Windows Explorer when mounting your home folder via the SMB protocol.
   • After enabling files fast clone in File Service advanced settings, files can be copied at a faster speed when the source and destination are within the same Btrfs volume.

7. Storage Manager

   • RAID type can now be changed from SHR-1 to SHR-2, providing greater flexibility of storage expansion and better data protection. Note: Depending on your disk configuration, two additional disks may be required when changing your RAID type from SHR-1 to SHR-2. For more information, please refer to DSM Help.
   • Provides more types of disk health status to help you grasp the health info of your disks.
   • You can now migrate a single volume to a disk group and then create multiple volumes while using SHR (more flexible for models built on the 32-bit architecture with a single volume size limit of 16TB) .

8. Resource Monitor

   • IT administrators will receive notifications regarding performance issues of the CPU, memory, disks, or LUNs (available on XS+ and XS models).
   • I/O throughput of each process can now be monitored in Task Manager (available on models with Intel 64-bit processors).
   • Added the service-based view, allowing you to monitor resource usage of each service and application (available on models with Intel 64-bit processors).

9. Service Modularization

   • Some of DSM’s built­-in features have been modularized into packages to ensure better system maintenance and update flexibility.
   • Modularization in DSM 6.1 includes USB Copy, File Station, and File indexing.

10. Package Center

    • Automatically updates incompatible packages after the installation of DSM 6.1 to boost your upgrading experience.

11. Flexible Update Options

    • You can apply important fixes without unnecessary system reboots.
    • In case a reboot is required to complete an update, the system will notify you via Email and in DSM, allowing you the flexibility to reboot at a time of your choice.

Known Issues & Limitations

1. Ended support for Intrusion Prevention since DSM 6.1. This package will be removed from Package Center.

(2017-01-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where file attributes (e.g. Hidden/Read-only) may not work properly when accessed via SMB after Active Directory Server is activated.

Note: After installing this update, file attributes will be restored to the last ones before Active Directory Server is activated.

(2018-06-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-18:33).

(2018-05-23)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. Updated Privacy Statement

Fixed Issues

1. Fixed a security vulnerability regarding Wget (CVE-2018-0494).

(2017-10-24)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities regarding Linux Kernel (CVE-2017-1000253, CVE-2017-1000364, CVE-2017-1000365, CVE-2017-1000370, CVE-2017-1000371).
2. Fixed multiple security vulnerabilities regarding Bluetooth (CVE-2017-1000250, CVE-2017-1000251).
3. Fixed multiple security vulnerabilities regarding WPA/WPA2 protocols for wireless connections (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13084, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088).
4. Fixed multiple security vulnerabilities regarding DNSmasq (CVE-2017-13704, CVE-2017-14491, CVE-2017-14495, CVE-2017-14496).
5. Fixed multiple security vulnerabilities regarding DHCPv6 Server (CVE-2017-14492, CVE-2017-14493, CVE-2017-14494).

(2017-09-26)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the stability of RAID 5, RAID 6, and RAID F1.
2. Enhanced file system stability by backporting Kernel updates.

(2017-07-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Nginx (CVE-2017-7529).
2. Fixed a security vulnerability regarding Samba (CVE-2017-11103).
3. Fixed a security vulnerability regarding DSM login page (CVE-2017-9553).

(2017-07-10)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding FFmpeg (CVE-2017-9993).

(2017-06-20)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the stability of iSCSI service.
2. Enhanced compatibility of XenServer for CHAP Discovery.

(2017-05-26)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding samba service (CVE-2017-7494).

(2017-05-02)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

What's New in DSM 6.0.3

1. Supports scheduled RAID data scrubbing.

Fixed Issues

1. Improved the procedure for creating/deleting SSD cache.
2. Fixed an issue where the system might fail to enter the hibernation mode in the IPv6 environment.
3. Fixed an issue where login history might not display properly in Log Center.
4. Fixed an issue where Let’s Encrypt CA (Certificate Authority) could not be updated after setting up proxy.
5. Fixed an issue where gofile.me sharing links could not be accessed via Firefox.
6. Fixed an issue where deleted files might still be indexed from the Recycle Bin in a shared folder.
7. Fixed an issue where file indexing might be inaccurate after renaming a shared folder.
8. Fixed an issue where uploading files via Firefox 52.0 might fail.
9. Enhanced the stability of the iSCSI service.

(2017-04-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed several security vulnerabilities regarding Linux kernel (CVE-2016-10229).

(2017-04-11)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where the data in Office and Note Station might be deleted when Synology NAS is removed from LDAP/AD domains.

(2017-01-18)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the stability of Btrfs file system after an abnormal shutdown.
2. Enhanced system stability when connecting via the SMB protocol.
3. Enhanced the stability of Synology E10G15-F1.
4. Fixed a security vulnerability regarding PHPMailer (CVE-2017-5223).

(2017-01-11)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced stability of Synology Expansion Unit RX1217sas and RX2417sas.
2. Enhanced system stability in a high loading enviornment.
3. Fixed a security vulnerability regarding PHPMailer(CVE-2016-10033,CVE-2016-10045 ).

(2016-12-22)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the performance of advanced LUN for certain workloads.
2. Enhanced Surveillance Station responsiveness on Btrfs file system.
3. Enhanced the stability of RAID 5.
4. Optimized CPU usage of Resource Monitor.
5. Refined the mechanism for reporting abnormal system fan behavior to avoid false alarms.
6. Fixed the compatibility issue of Ethernet adapter E10G15-F1.
7. Fixed a security vulnerability regarding ImageMagick: CVE-2016-8707
8. Fixed a security vulnerability regarding Linux kernel: CVE-2016-8655.
9. Fixed an issue where DSM might fail to access the internet when IPv6 Gateway address is manually set.
10. Fixed an issue where new snapshots could not be taken due to snapshot count miscalculation.
11. Fixed several security vulnerabilities regarding NTP module (CVE-2016-7426, CVE-2016-7427, CVE-2016-7428, CVE-2016-7429, CVE-2016-7431, CVE-2016-7433, CVE-2016-7434, CVE-2016-9310, CVE-2016-9311, CVE-2016-9312).
12. Fixed an issue where CMS might cause excessive CPU usage.
13. Fixed an issue where the DNS service of IPv6 might reconnect frequently.
14. Fixed an issue where the conversion from RAID 1 to RAID 5 might fail.

(2017-04-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed several security vulnerabilities regarding Linux kernel (CVE-2016-10229).

(2017-04-11)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where the data in Office and Note Station might be deleted when Synology NAS is removed from LDAP/AD domains.

(2017-01-18)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the stability of Btrfs file system after an abnormal shutdown.
2. Enhanced the stability of iSCSI service.
3. Enhanced system stability when connecting via the SMB protocol.
4. Enhanced the stability of Synology E10G15-F1.
5. Fixed a security vulnerability regarding PHPMailer (CVE-2017-5223). Upgrading Photo Station to version 6.6.3 or above is required.

(2017-01-11)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced SHA stability by optimizing CPU usage priority on the running process.
2. Enhanced the stability of a Btrfs volume with SSD cache.
3. IPv6 is now supported by ICMP rule in Firewall.
4. Fixed a security vulnerability regarding PHPMailer (CVE-2016-10033,CVE-2016-10045 )。
5. Fixed a security vulnerability regarding Linux Kernel (CVE-2016-7117).
6. Fixed an issue where VPN server might restart unexpectedly.

(2016-12-22)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Enhanced the stability of RAID 5.

(2016-12-09)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed an issue where under certain circumstances, new snapshots could not be taken.
2. Fixed an issue where DSM might fail to access the internet when IPv6 Gateway address is manually set.
3. Fixed a security vulnerability regarding Linux kernel: CVE-2016-8655.
4. Fixed a security vulnerability regarding ImageMagick: CVE-2016-8707

(2016-11-29)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Enhanced Surveillance Station responsiveness on Btrfs file system.
2. Refined the mechanism for reporting abnormal system fan behavior to avoid false alarms.

3. Improved 4K sequential read IOPS on Advanced LUNs.

4. Optimized CPU usage of Resource Monitor.

5. Fixed several security vulnerabilities regarding NTP module (CVE-2016-7426, CVE-2016-7427, CVE-2016-7428, CVE-2016-7429, CVE-2016-7431, CVE-2016-7433, CVE-2016-7434, CVE-2016-9310, CVE-2016-9311, CVE-2016-9312).
6. Fixed an issue where CMS might cause excessive CPU usage.
7. Fixed an issue where file names in certain languages might not display correctly when searching for files on specific models (DS413 and DS213+) with Mac Finder via AFP.
8. Fixed an issue where the DNS service of IPv6 might reconnect frequently.

(2016-11-17)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where hot spare might not be properly activated.
2. Fixed an issue where false alarm might be triggered in Security Advisor.
3. Fixed an issue where the information of external storage devices and SSDs might be incorrectly displayed.

(2016-11-10)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Enhanced performance of resolving group list for domain users belonging to large domain groups.
2. Enhanced stability during file-copy operation via NFS protocol.
3. Enhanced server responsiveness on Btrfs file system.
4. Upgraded cURL to 7.50.3 as a cumulative security update and fixed multiple security vulnerabilities. (CVE-2016-8615, CVE-2016-8616, CVE-2016-8617, CVE-2016-8618, CVE-2016-8619, CVE-2016-8620, CVE-2016-8621, CVE-2016-8622, CVE-2016-8623, CVE-2016-8624, CVE-2016-8625)
5. Fixed an issue where applications might fail to save files on macOS 10.12.x via AFP.
6. Fixed an issue where irrelevant data of MailPlus Server or Mail Server might have been collected in logs.
7. Fixed a security vulnerability regarding Linux kernel: CVE-2016-5195.
8. Fixed a issue where users may fail to launch Chat and Office in a Safari browser.

(2016-10-06)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed an issue where SHA may fail to set SNMP UPS.
2. Fixed an issue where Synology E10G15-F1 NIC may disconnect under certain circumstances.
3. Fixed an issue where Full File Clone via VMware VAAI could cause NFS protocol to act abnormally under certain circumstances.
4. Fixed an issue where the page at Control Pannel > Domain/LDAP does not respond.
5. Fixed an issue where Snapshot Replication could not open normally in certain timezones.
6. Fixed multiple security vulnerabilities regarding curl module (CVE-2016-5419, CVE-2016-5420, CVE-2016-5421).
7. Upgraded OpenSSL to 1.0.2j to address multiple vulnerabilities (CVE-2016-6304, CVE-2016-2183, CVE-2016-6303, CVE-2016-6302, CVE-2016-2182, CVE-2016-2180, CVE-2016-2177, CVE-2016-2178, CVE-2016-2179, CVE-2016-2181, CVE-2016-6306 and CVE-2016-7052).
8. Fixed an issue where system resources are not released properly after QuickConnect is enabled.
9. Fixed an issue where file indexing is not triggered when files are uploaded through Samba protocol.

(2016-09-02)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Improved the stability of Btrfs file system when abnormal shutdown occurs under high system loads.
2. Fixed an issue where certain browsers and mobile apps might fail to connect to Synology NAS via HTTPS when HTTP/2 is enabled.
3. Fixed an issue where users might fail to log in after restoring system configurations from previous versions in the latest DSM 6.0.2.

(2016-08-18)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly. You can also manually download the patch file from Download Center.

What's New

1. This update includes all bug fixes as well as security fixes in the previously released updates since DSM 6.0.1.
2. You can now configure performance alarms on high-end models to notify system administrators when the resource utilization or performance metric meets the pre-defined criteria.
3. exFAT is now available on more models. Please refer to Add-on Packages Page for more details.
4. Supports setting up user permissions for DSM desktop.
5. Port 443 can now be used for setting up OpenVPN.
6. You can now customize the maximum concurrent HTTP connections on Intel-based models.

Fixed Issues

1. Improved the stability of system upgrade on SHA.
2. Optimized CPU usage on Btrfs file system.
3. Enhanced the performance of full content search.
4. PSD thumbnails are no longer supported in File Station due to performance concerns.
5. Fixed an issue where login identity might be incorrect in very rare cases.
6. Fixed a security vulnerability regarding XSS.
7. Fixed a security vulnerability regarding Nettle (CVE-2016-6489).
8. Minor bug fixes.

Known issues

1. After upgrading to DSM 6.0.2, the following options will be enabled by default in the Log Center package if you have set a storage destination for archives:

   • Archive local logs to the storage location
   • Send and Receive logs from other devices in BSD and IETF formats

(2016-07-21)

1. Applied the workaround to mitigate a security vulnerability of libupnp module (CVE-2016-6255).

   Note: A manual reboot is required for systems using Wi-Fi dongles.

(2016-06-21)

1. Improved system stability when Synology NAS serves as a VPN server.
2. Fixed several security vulnerabilities regarding NTP module (CVE-2016-4957, CVE-2016-4953, CVE-2016-4954, CVE-2016-4955, and CVE-2016-4956).
3. Fixed an issue where DSM user interface might become unresponsive under normal operation.
4. Fixed an issue where shared links created by LDAP users in DSM 5.2 might be unavailable after upgrading to DSM 6.0.
5. Fixed an issue where folders cannot be uploaded to File Station.
6. Fixed an issue where encrypted replication tasks cannot be resumed or completed when the sync process has been interrupted.
7. Fixed an issue where log files could not be rotated on the passive server in the HA cluster, which could cause the upgrade failure on the passive server.
8. Enhanced the process of shared folder encryption.

(2016-06-06)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released updates since DSM 6.0-7321.
2. EDS14 can now be upgraded to DSM 6.0.1.
3. Improved overall performance for multiple client connections.
4. SSD TRIM is now supported on DS715, DS1515, and DS2015xs.
5. File Station
   • The sorting algorithm has been changed from sorting by name to natural sort order.
   • Changed the filter function to the search function to locate files efficiently.
   • Supports search history.
6. High Availability Manager
   • Added the quorum server settings to reduce split-brain error occurrences.
   • Proxy servers are supported.
   • Supports customized DSM ports and HTTPS connection.
   • Reduced by 60% the average time for detecting disconnected networks before automatic failover.
   • Improved HA cluster stability during upgrade.
   • Supports installing DSM on RC18015xs+ in network environments without a DHCP server.

Fixed Issues

1. Fixed an issue where an ext2 external storage device could not be mounted.
2. Fixed an issue where shared folders on NTFS external storage devices could not be remotely mounted to some models via NFS.
3. Reduced memory usage for writing data to an NTFS external storage device.
4. Fixed an issue where Microsoft Excel files in an encrypted shared folder on some models could not be correctly accessed via Windows File Service.
5. Fixed a security vulnerability regarding the p7zip module (CVE-2016-2335).
6. Fixed an issue where files might not appear in search results if their file types were not specified for file indexing.
7. Fixed an issue where backup tasks could not complete when the remote destination was encrypted.
8. Fixed an issue where IPv6 link-local authentication might fail for rsync.
9. Fixed an issue where backup tasks in Time Backup might not run after system upgrade.
10. Fixed an issue where system monitoring processes might demand system memory on RS10613xs+, RS18016xs+, and RC18015xs+.
11. Applied the workaround to mitigate a security vulnerability of ImageMagick module (CVE-2016-5118).
12. Minor bug fixes.

(2016-05-13)

1. Improved the stability of license import for MailPlus Server and Docker DSM under poor network environment.

   Note: To know the models supported for MailPlus Server and Docker, please refer to Add-on Packages.

(2016-05-06)

1. Applied the enhanced official workaround to mitigate multiple vulnerabilities of ImageMagick module (CVE-2016-3714, CVE-2016-3715, CVE-2016-3716, CVE-2016-3717, CVE-2016-3718).

(2016-05-06)

1. Upgraded NTP to 4.2.8p7 to address multiple vulnerabilities (CVE-2016-1547, CVE-2016-1548, CVE-2016-1549, CVE-2016-1550, CVE-2016-1551, CVE-2016-2516, CVE-2016-2517, CVE-2016-2518, CVE-2016-2519).
2. Upgraded OpenSSL to 1.0.2h to address multiple vulnerabilities (CVE-2016-2105, CVE-2016-2106, CVE-2016-2107, CVE-2016-2108, CVE-2016-2109, CVE-2016-2176).
3. Enhanced the compatibility of Synology NAS with Hyper-V exports.
4. Fixed an issue where adding ACL permissions or changing file owner would fail in Windows via SMB.
5. Fixed an issue where iSCSI ACL could not access LUNs properly.
6. Fixed an issue where editing shared folders would fail when shared folder netlogn/sysvol existed.
7. Fixed an issue where channel scan could not be performed on entry Marvell models with certain DVB-T dongles.
8. Fixed an issue where LUNs could not be backed up to an external SATA device.
9. Fixed an issue where iSCSI service might cause a system crash in a VMware environment under heavy load.
10. Before the official patch is released, workaround is applied to mitigate multiple vulnerabilities of ImageMagick module (CVE-2016-3714, CVE-2016-3715, CVE-2016-3716, CVE-2016-3717, CVE-2016-3718).

(2016-04-27)

1. Improved the stability of system boot up on DS716+ and DS216+.

(2016-04-22)

1. Fixed multiple issues that might cause the iSCSI service to hang under heavy loading and performing VMware commands.
2. Fixed an issue where the file created time was not correctly set.
3. Fixed an issue where LUN backup tasks of Hyper Backup could not be completed due to insufficient disk space after upgrade to DSM 6.0.
4. Fixed multiple vulnerabilities regarding the Samba module (CVE-2016-2118, CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115).
5. Fixed an issue where changing the VLAN configurations might cause certain packages to operate abnormally.
6. Fixed an issue where configurations at Control Panel > Network > Network Interface could not be edited if IPv6 was configured before upgrade to DSM 6.0 from DSM 5.2.

(2016-04-18)

1. Fixed an issue where DSM 6.0-7321 Update 1 could not be normally installed with Auto-Update.

   Note: This update does not require system reboot.

(2016-04-15)

1. Improved the stability when connecting via AFP protocol.
2. Fixed a security vulnerability regarding Samba file service (CVE-2016-2118, also known as Badlock).
3. Fixed an issue where a false-alarm warning about unexpected file changes occurs when saving files in Office Excel 2003.
4. Fixed an issue where Docker DSM might be terminated even when valid licenses are imported.
5. Fixed multiple issues that might cause iSCSI service to hang under heavy loading and performing Vmware VAAI commands.
6. Fixed an issue in which the configuration change of VLAN could result in abnormal functionality of certain packages. e.g. Surveillance Station

7. Fixed an issue where the DSM welcome title and message will be reset to default if users set it to blank.

   Note: This update does not require system reboot.

(2016-03-24)

Compatibility and Installation

1. Some features have specific hardware requirements and are only available on certain Synology NAS products.
2. For security purposes, admin accounts with blank passwords will be disabled after the upgrade, and password change will be required.
3. Some third­-party packages may not be compatible with DSM 6.0; hence disabling the packages before upgrading to DSM 6.0 is necessary.
4. The current Alias settings in Application Portal will be disabled and require manual configuration after updating to DSM 6.0.
5. The DDNS of f3322.org is removed in DSM 6.0 official release due to unclarified domain usage violation. Please refer to http://www.pubyun.com/p/notice/ for details.
6. Due to the discontinued support by the open source team, the Asterisk package will no longer be supported after DSM 6.0.
7. If phpMyAdmin was upgraded during DSM 6.0 Beta 2, you need to uninstall it first so that its latest update will be available at Package Center.
8. The following packages will not be supported by NVR216 after upgrading to DSM 6.0:
   • PHP
   • Text Editor
   • Web Station
   • WebDAV
9. Internet Explorer 8 is no longer supported on DSM 6.0 and onward. Please refer to Software Spec for details

What’s New in DSM 6.0

1. Btrfs File System
   • Set usage/user quota for shared folders.
   • Enable file compression to increase the flexibility of volume usage.
   • Perform defragmentation to increase system performance.
   • Data checksum is enabled by default and data scrubbing can be run to verify data integrity.
   • When file versioning is enabled in Cloud Station, it will not occupy additional storage on Btrfs file system. On other file systems, file versioning will occupy additional space equal to the size of each shared folder.
   • Files will be backed up once the backup task is started, even if the files are changed or deleted afterwards.
   • Converting existing ext4 file system to Btrfs is not supported. To store files under Btrfs file system you must create a new Btrfs volume and move the files to the new file system.
   • Available on the following models:
     • 16­-series: RS2416RP+, RS2416+, RS18016xs+, DS716+, DS216+
     • 15­-series: RC18015xs+, RS815RP+, RS815+, DS3615xs, DS2415+, DS1815+, DS1515+, DS415+
     • 14­-series: RS3614xs+, RS3614xs, RS3614RPxs
     • 13­-series: RS3413xs+, RS10613xs+
     • 12­-series: DS3612xs, RS3412xs, RS3412RPxs
     • 11­-series: DS3611xs, RS3411xs, RS3411RPxs
2. Service Modularization
   • Some of the DSM built­-in features have been modularized into packages to ensure better system maintenance and update flexibility.
   • Modularization in DSM 6.0 includes Storage Analyzer, Backup & Restore, PHP, Web Station and Text Editor, Log Center (with basic built­-in functions in DSM and extensive functions via package download), WebDAV and Snapshot Replication.
3. 64­-Bit Architecture
   • DSM 6.0 has been optimized for all models based on Intel 64­-bit processors to improve general performance.
   • Supports over 4GB memory allocation for one single process to deploy large scale application.
4. High Availability Manager
   • When a split­-brain error occurs in an HA cluster, you can designate one server as the active server and overwrite the data on the other server. No full data replication is required.
   • When a split­-brain error occurs, you can view the recent system information, iSCSI Target connection history and file difference in each shared folder.
   • Reduced the downtime for upgrading a cluster by 50%.
   • Reduced the time to bind and unbind a cluster by 20%.
   • Reduced the occurrence of split­-brain errors.
   • Supports Docker DSM.
5. High Availability Manager for RC18015xs+
   • Supports Virtual DSM.
   • Supports Docker DSM.
6. Backup & Replication
   • Backup & Replication features are now available in ​add-­on packages Hyper Backup ​(backup client) and Hyper Backup Vault ​(backup server). The existing Backup & Replication task settings will be migrated to the new package automatically upon upgrading to DSM 6.0. Some settings are relocated to Control Panel:
     • rsync: Control Panel > File Services > rsync
     • Shared Folder Sync: Control Panel > Shared Folder Sync
     • For features of Hyper Backup ​and Hyper Backup Vault​, please refer to the What’s New in the Packages section.
7. Security
   • CSP support can effectively prevent XSS attacks.
   • TLS/SSL profiles can be adjusted according to your browser compatibility and security requirements.
   • Root account is replaced by administrators group credentials to log into SSH to enhance security.
8. Certificate
   • The integration of Let’s Encrypt helps provide your Synology NAS with secure connection easily and effortlessly.
   • Multiple certificates are now supported to increase the flexibility for hosting several different hostnames.
9. File Station
   • Supports mounting NFS shared folders on folders on Synology NAS.
   • Aviary photo editor is introduced to replace the existing service for a more intuitive interface.
   • Multiple files can be downloaded without being compressed into one giant file on Chrome browser (on Windows computers only).
10. Content Search
    • Search in File Station now allows you to match the document content or even the metadata of multimedia files for a more effective search result.
    • You can now use Mac Finder to quickly search the content of indexed files within mounted folders on your Synology NAS.
11. File sharing
    • Collect files via the intuitive File Request feature.
    • Customize the background picture and logo that you see when sharing files.
    • File sharing and file request have been redesigned for mobile interface to ensure a consistent user experience.
12. Accessibility
    • DSM is now accessible to visually impaired users.
    • Fully supported for accessibility in File Station, Desktop navigation, and Keyboard Shortcuts.
    • Six modules supported in Control Panel: Shared Folder, File Service, User, Group, QuickConnect, and Update & Restore > Update.
13. 2-­Step Verification
    • You can now add and manage your most frequently used devices as trusted devices without entering verification code every time you log in.
14. QuickConnect
    • Relay service can now be disabled to meet enterprise policies.
15. 802.1X
    • Added support of 802.1X authentication for wired networks.
16. Firewall
    • Organize your firewall rules into different profiles.
17. DHCP Server
    • Supports standard DHCP options.
    • Supports vendor specific options.
    • Supports downloading PXE boot loader files from remote TFTP servers.
18. SSD Cache
    • Create an SSD cache consisting of up to 12 SSD devices.
    • When SSD cache is enabled on a volume with advanced iSCSI LUNs, the performance can be improved up to 30%.
    • You can now use different SSD models to create an SSD cache.
19. Storage Manager
    • Configure the description for volumes and Disk Groups.
    • For RAID Groups, the number of disks for each RAID Array can be 6, 12 or 24.
20. Customized Domain Name for DSM
    • Customized domain name can now be used for accessing DSM more easily.
21. Application Portal
    • DSM can now serve as a reverse proxy server.
    • Customized domain name can now be used for directly accessing Synology applications.
22. Dynamic DNS Support
    • Added new DDNS provider TWNIC to support domain names with Traditional Chinese characters.
23. Web Enhancement
    • HTTP compression can be enabled to effectively compress packets to reduce the size of web transfer.
    • HTTP/2 is now supported as an replacement of SPDY to increase the transfer speed for high latency connection.
24. DSM mobile
    • Comes with a brand new user interface.
    • View and update your DSM version directly.
    • Added support for updating packages in Package Center.
    • Displays volume and disk information in Storage Manager.
    • Displays memory composition in Resource Monitor.
25. Theme Change
    • Light and dark themes are supported for changing the system style within DSM.
26. Keyboard Shortcut
    • When typing in the text fields, keyboard shortcuts will be temporarily disabled to avoid unintentional entries.
27. Resource Monitor
    • You can view the throughput, latency, IOPS, IO Size and queue depth of each iSCSI LUN.
28. Task Scheduler
    • You can now view the status of last run tasks to monitor the results.
29. Package Center
    • Packages are divided into two main categories, Synology and Third­-party, for better recognition.

What’s New in Packages

1. Virtual DSM Manager (Beta)
   • Run multiple Virtual DSM instances on a single server using the virtualization technology.
   • Perform live migration of virtual machines by relocating a virtual machine from one host to another in just a few minutes without interruption while keeping its storage unchanged.
   • 4GB RAM or more is required to run Virtual DSM. System with less than 4GB RAM can only be used as a storage resource.
   • Virtual DSM Manager is not supported on hosts running Synology High Availability.
   • The beta program will continue after DSM 6.0 official release.
   • Available on the following models:
     1. 16­-series: RS2416RP+, RS2416+, RS18016xs+
     2. 15­-series: RS815RP+, RS815+, DS3615xs, DS2415+, DS1815+, DS1515+, DS415+
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs
     4. 13­-series: RS3413xs+, RS10613xs+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs
     6. 11­-series: DS3611xs, RS3411xs, RS3411RPxs
2. Docker DSM (Beta)
   • Run multiple Docker DSM instances on a single server using the container technology.
   • A Btrfs volume is required to store Docker DSM data. System data can be backed up and replicated.
   • Available on the following models:
     1. 16­-series: RS2416RP+, RS2416+, RS18016xs+, DS716+, DS216+
     2. 15­-series: RS815RP+, RS815+, DS3615xs, DS2415+, DS1815+, DS1515+, DS415+
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs
     4. 13­-series: RS3413xs+, RS10613xs+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs
     6. 11­-series: DS3611xs, RS3411xs, RS3411RPxs
3. Snapshot Replication
   • Snapshot Replication is now a stand-­alone package. It is previously named as Snapshot & Replication​in DSM 6.0 Beta and Data Protection Manager ​in DSM 5.2.
   • Shared Folder Snapshot
     1. Take a snapshot of shared folders up to every 5 minutes.
     2. View snapshot data in all file services or File Station, or by clicking the Previous Versions tab in the Properties dialogue box in File Explorer on Windows PC.
     3. Increase the maximum snapshot versions of a shared folder to 1024 for all currently available models (except for DS216+ on which the number is limited to 256).
     4. Limit the maximum snapshot versions of all the shared folders to 65536 for all currently available models (except for DS216+ on which the number is limited to 4096).
     5. Supports shared folders located on Btrfs volumes.
   • Shared Folder & LUN Replication
     1. Replicate your data in shared folders and iSCSI LUNs from one server to another by taking and sending a snapshot to the remote server.
     2. Extend a replication by replicating data from a destination server to another secondary destination server to make multiple copies of your data.
     3. Replicate one shared folder or iSCSI LUN to up to 3 destination servers from the same source server.
     4. Limit the maximum number of replication tasks to 64.
     5. Statistics of transferred size and sync duration are recorded and displayed as a report.
     6. Allows administrator users to export the replicated data to external devices, and then deliver and import it to the recovery site, reducing bandwidth usage in your production environment.
     7. Provides an overview topology to show how your replicas are stored.
     8. Supports port forwarding by customizing address and port of a replication task.
     9. Now you can encrypt replication transmission.
     10. iSCSI LUN replication can be managed via Synology Snapshot Replication or VMware vCenter Site Recovery Manager. (Installing Synology SRA on VMware Site Recovery Manager servers is required.)
     11. Only Advanced iSCSI LUNs and shared folders on Btrfs volumes are supported.
   • Recovery
     1. You can perform a failover on shared folders or iSCSI LUNs by making the replicas on the destination server writable when the source server is not healthy.
     2. You can perform a test failover to make a clone and run all necessary tests in the event of disaster.
     3. You can perform a force failover when the source server is healthy.
     4. After performing a failover, you can perform a re-­protect action to sync data on two servers again.
     5. When performing a re­-protect action, you can choose either of the servers to sync data from and choose the new source server for the replication task.
   • Available on the following models:
     1. 16­-series: RS2416RP+, RS2416+, RS18016xs+, DS716+, DS216+
     2. 15­-series: RC18015xs+, RS815RP+, RS815+, DS3615xs, DS2415+, DS1815+, DS1515+, DS415+
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs
     4. 13­-series: RS3413xs+, RS10613xs+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs
     6. 11­-series: DS3611xs, RS3411xs, RS3411RPxs
4. MailPlus Server (Beta)
   • Please note that the Beta program will continue after DSM 6.0 official release.
   • Starting from MailPlus Server 1.0 official release, MailPlus Server will include 5 free mail accounts by default, and licenses will be required for additional mail accounts. During the Beta program, no licenses will be required for any email accounts.
   • MailPlus Server provides enterprise­-grade mail server features and advanced active-­active architecture, allowing administrator to set up a high-­availability mail system with single server fault-­tolerance and load-­balancing abilities.
   • Active-­active mechanism ensures two-­way syncing of data between both servers to maximize the uptime for the mail system.
   • Load balancer smartly distributes incoming messages to ensure that the loadings on the two nodes are evenly balanced.
   • The specially designed algorithm allows you to search email content with a given keyword for an even more accurate result.
   • The spam-­filter has a much enhanced anti­-spam ability, especially for Chinese spams, by using implemented algorithm to analyze the meaning of the statement.
   • Customize spam filters by keywords for precise spam blocking.
   • The migration from the existing Mail Server to MailPlus Server is made seamless to let you continue using the previously hosted mail service.
   • Supports application backup in the Hyper Backup package.
   • Enhanced anti­-malware and anti-­virus protection by integrating Google Safe Browsing and third­-party database.
   • Message Content Protection (MCP) allows you to filter or block the mails that match MCP rules.
   • Penpal auto whitelisting mechanism ensures that the mails from the contacted senders will not be marked as spam.
   • You can forward mail logs to both the server not being used as load balancer in the mail cluster for log backup and the syslog server for centralized log management.
   • You can now disable full-­text search for selected accounts to utilize the server resources.
   • Usage analysis provides an efficient way to calculate email quantity of the selected users, allowing the administrators to easily monitor the mail traffic by accounts.
   • MailPlus Server will be available on the following models:
     1. 16­-series: RS18016xs+, RS2416+, RS2416RP+, DS716+, DS216+
     2. 15­-series: RC18015xs+, DS3615xs, DS2415+, DS1815+, DS1515+, RS815+, RS815RP+, DS415+
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs, RS2414+, RS2414RP+, RS814+, RS814RP+
     4. 13­-series: DS2413+, RS10613xs+, RS3413xs+, DS1813+, DS1513+, DS713+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs, RS2212+, RS2212RP+, DS1812+, DS1512+, RS812+, RS812RP+, DS412+, DS712+
     6. 11­-series: DS3611xs, DS2411+, RS3411xs, RS3411RPxs, RS2211+, RS2211RP+, DS1511+, DS411+II, DS411+
5. MailPlus (Beta)
   • Please note that the Beta program will continue after DSM 6.0 official release.
   • MailPlus is a powerful webmail service that provides rich features. The beautifully designed user interface and functionality help you work intuitively on your everyday email with efficiency.
   • Organize your email with the physical mailboxes or assign multiple attributes onto the email by applying labels for an intuitive and convenient email management.
   • Send and receive mail to and from other mail servers with the customizable SMTP service and POP3 fetch function.
   • Find and manage your email efficiently with the smart search function.
   • Filters automatically moves your incoming or outgoing email to the appointed mailbox or applies labels.
   • Customize wallpaper and theme settings.
   • Enrich your email content with the built­-in stickers.
   • With Synology Web Clipper, you can easily save the conversation in MailPlus to Note Station for management.
   • Supports attaching files from DSM.
   • Supports undo operation for Delete/Move/Archive/Set read & unread/Apply & remove label actions.
   • Customize auto-­reply messages for different senders.
   • Supports browsing history.
   • You can now auto-­empty Spam/Trash mailboxes on logout.
   • Clip long email messages to shorten loading time.
   • List email addresses according to contact frequency when specifying the sender/recipient.
   • Group contacts will be displayed when specifying the sender/recipient in the mail composer.
   • Task progress will be displayed after setting up the filters.
   • Supports keyboard shortcuts to view and manage messages more efficiently.
   • Overall performance enhancement including improved email loading and deleting performance.
   • MailPlus will be available on the following models:
     1. 16­-series: RS18016xs+, RS2416+, RS2416RP+, DS716+, DS216+
     2. 15­-series: RC18015xs+, DS3615xs, DS2415+, DS1815+, DS1515+, RS815+, RS815RP+, DS415+
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs, RS2414+, RS2414RP+, RS814+, RS814RP+
     4. 13­-series: DS2413+, RS10613xs+, RS3413xs+, DS1813+, DS1513+, DS713+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs, RS2212+, RS2212RP+, DS1812+, DS1512+, RS812+, RS812RP+, DS412+, DS712+
     6. 11­-series: DS3611xs, DS2411+, RS3411xs, RS3411RPxs, RS2211+, RS2211RP+, DS1511+, DS411+II, DS411+
6. SpreadSheet
   • Allows you to host your collaboration drive and work easily with others by sharing spreadsheets.
   • Customize access permissions for guests, DSM users and groups, and set read/write privileges for specific spreadsheets.
   • Multiple users can edit the same spreadsheet simultaneously and see the modifications in real time.
   • View the revision history and restore the spreadsheet to a previous version.
   • Manage your spreadsheets with multiple attributes by adding tags to individual spreadsheets and quickly find them later.
   • Supports import and export of other spreadsheet formats.
   • Supports data validation, conditional formatting, filter and spelling check.
   • Spreadsheet encryption is supported to protect confidential spreadsheets.
   • Supports application backup in the Hyper Backup package.
   • Range selection is supported in SpreadSheet functions.
   • Supports selecting multiple rows/columns/cells by pressing and holding the "Ctrl" key.
   • Over 300 formulas are supported.
   • SpreadSheet Function List is provided with instructions on frequently used functions and usage examples.
   • Allows you to insert images to spreadsheets.
   • You can now print your spreadsheets.
   • SpreadSheet will not be available on the following models due to the restriction of Node.js version:
     1. 13­-series: DS213, DS213air, DS413j, DS213+, DS413
     2. 12­-series: DS112, DS112+, DS112j, DS212, DS212+, DS212j, RS212, RS812
     3. 11­-series: DS111, DS211, DS211+, DS211j, DS411, DS411j, DS411slim, RS411
7. Surveillance Station 7.2
   • Surveillance Station has been optimized for models based on Intel 64­-bit processors to improve general performance.
   • Added support for I/O modules from Advantech ADAM­-6050, ADAM-­6052, ADAM-­6250, ADAM-­6266 and AXIS P8221.
   • Added support for running Surveillance Station on both Virtual DSM and Docker DSM. (Please note that Surveillance Station running on Virtual DSM or Docker DSM does not include any default surveillance device licenses.)
   • Added support for 2­-step verification using one-­time password (OTP) for DSM 6.0 to provide extra security.
8. PetaSpace
   • PetaSpace is an application that combines the capacity of multiple volumes into a larger volume group. With PetaSpace, data of a single shared folder can now be located across multiple volumes, thus allowing you to store, manage, and access the growing amount of data more efficiently and flexibly.
   • Available on the following models:
     1. 16­-series: RS18016xs+
     2. 15­-series: RC18015xs+, DS3615xs
     3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs
     4. 13­-series: RS3413xs+, RS10613xs+
     5. 12­-series: DS3612xs, RS3412xs, RS3412RPxs
     6. 11­-series: DS3611xs, RS3411xs, RS3411RPxs
9. Cloud Station Server
   • Added support for setting user and group speed limit.
   • Integrated with DSM application privilege settings.
   • Offers Intelliversioning version rotation algorithm.
   • Run Cloud Station Server without enabling home service.
   • Enforce 2­-step verification to strengthen identity security.
   • Supports renaming shared folders when Cloud Station Server is running.
   • Supports symbolic links.
   • Supports files containing "/" characters on Mac.
   • Now allows you to select multiple files/folders for restoration in Version History.
   • Raised concurrent file transfer number to 10,000 on selected models (RS18016xs+, RC18015xs+, RS3614xs+, RS10613xs+, RS3614xs, and DS3615xs; memory expansion to 32GB required).
   • Optimized small file processing performance.
   • Optimized 1st-­time synchronization performance.
   • Optimized as a backup target.
10. Cloud Station ShareSync
    • Configure upload­-only or download-­only tasks.
    • Customize conflict policies by each ShareSync device.
    • Enhanced host search algorithm used in QuickConnect connections.
    • Supports encrypted shared folders.
    • Now allows "surveillance" and "photo" shared folders to be synchronized with a shared folder under a different name.
    • Now advanced consistency check can be disabled.
    • Optimized memory usage.
11. Cloud Station Drive
    • Synchronize any folders on your Synology NAS.
    • Configure download­-only tasks.
    • Customize conflict policies by each PC.
    • Integrated with DSM 2­-step verification.
    • Integrated with Windows VSS (Volume Shadow Copy Service).
    • Enhanced host search algorithm used in QuickConnect connections.
    • Enhanced user experience and graphic interface.
    • Now advanced consistency check can be disabled.
    • Added minimalist system tray icons to better suit the OS themes of modern computers.
    • Enhanced the installation GUI on Mac.
    • Optimized memory usage.
12. Cloud Station Backup
    • Back up the data on your personal computers running Windows, OS X, Ubuntu and Fedora operating systems.
    • Retains up to 32 versions of every backed up file and supports file filtering. (Please refer to the software specifications for supported OS versions.)
13. Cloud Sync
    • Synchronize a specified folder on the public cloud with a folder on Synology NAS.
    • Configure multiple sync tasks in a single connection.
    • Sync a folder to multiple public cloud destinations.
    • Choose never to remove the data on the destination.
    • Supports read-­only shared folders.
    • Supports encrypted shared folders.
    • You can now customize the number of files to be concurrently uploaded/downloaded.
    • You can now convert Google Docs to Microsoft Office or jpeg formats in download­-only tasks to keep an offline backup copy.
    • Last modified time of synced files will be updated to Dropbox.
    • Now advanced consistency check can be disabled.
    • Supports creating a new remote folder during task creation.
    • Supports application privilege settings by group and IP.
    • Added support for:
      1. Microsoft OneDrive for Business and Office 365
      2. Microsoft OneDrive’s new API
      3. HiDrive
      4. Amazon S3 Standard -­ Infrequent Access storage class
      5. Amazon S3 Seoul region
    • Reorganizes the order of public cloud services by device location.
    • Supports OpenStack keystone v3.
    • Now offers Windows and Linux decryption tools for data recovery.
    • Optimized memory usage.
    • Raised the minimum polling period to 10 seconds.
14. Directory Server
    • The Provider­-Consumer architecture in Directory Server allows the account data to be continuously replicated from a "Provider" Synology NAS to one or more "Consumer" servers. This ensures that the connection between the clients and the server will not be affected even when the Provider server is unavailable.
    • Password strength policy can now be applied to user accounts for better security.
    • You can enforce regular and periodical password update to enhance security. In addition, password expiration reminders will automatically notify users to update their passwords via email or upon login.
15. Video Station
    • Brand new visual design in contrasting black and red accentuates your video collections.
    • Offline transcoding can make you transcode and download video collections in advance. You can enjoy them even without available internet connection.
    • Use the new home page to browse all recently added videos in each library and the top banner in homepage will recommend you the best films.
    • On­screen buttons allow smoother and more intuitive operation.
    • Stream videos from Video Station to Chromecast with the Google Cast extension (available on Chrome Web Store).
    • Provided an option to disable metadata auto download for specific folder.
    • Provided more detailed information, such as FPS, sample frequency, and multiple audio tracks.
    • Added functions to edit video ratings and change the backdrop.
    • Customize library visibility according to your own preferences.
    • Subtitle size now can be adjusted to fit your preference.
16. Hyper Backup
    • Back up folders, packages, and DSM configurations to a multi­-version repository and save backed up data in image formats to maximize storage efficiency while retaining up to 65,535 versions for retrieval.
    • Supports flexible version control:
      1. Regular or Smart Recycle rotation is supported.
      2. Version lock prevents a specific version from automatic rotation.
    • Supports a variety of destinations:
      1. Local shared folders and external storage devices.
      2. Shared folders and external storage devices on a remote server.
      3. Public cloud destinations including Amazon S3, S3­-compatible storage, Microsoft Azure (Global and China), HiDrive, hubiC, IBM SoftLayer, RackSpace, and other OpenStack Swift compatible servers.
    • Supports granular recovery:
      1. Use web-­based Backup Explorer to browse through backup versions and files.
      2. Allows single file restoration.
    • Supports portable backup repositories:
      1. Export the initial backup version to an external storage device and deliver the external storage device to the destination for data uploading.
      2. Reuse a backup repository by relinking.
    • Full­-fledged security features:
      1. Enable client-­side encryption to ensure data confidentiality at the backup destination.
      2. Supports transmission encryption.
      3. Supports backing up encrypted shared folders.
    • Supports Amazon S3 Standard -­ Infrequent Access storage class.
    • Supports backing up symbolic links.
    • Supports port forwarding from a customized port of a backup task to a Synology NAS or a rsync server.
    • Now you can compress your files before transmitting them to the backup target, saving the network bandwidth and storage consumption.
    • Now allows multiple restore/download/copy tasks to run concurrently in Hyper Backup Explorer.
    • With Hyper Backup installed, you can launch the Hyper Backup Explorer by clicking the backup target in File Station.
    • Upgrade and migration:
      1. The Backup & Restore ​package will be automatically migrated to Hyper Backup upon upgrading from DSM 6.0 Beta 1.
      2. The Backup & Replication ​package will be automatically migrated to Hyper Backup upon upgrading from DSM 5.2.
17. Hyper Backup Vault
    • Hyper Backup Vault is a new package and will be automatically installed upon upgrading to DSM 6.0.
    • You can enable backup services to allow another Synology NAS to back up to your Synology NAS via Hyper Backup.
    • Provides an overview of the Hyper Backup targets backed up by other Synology NAS servers.
    • Provides the information of each backup target, such as path, space usage, last backup time, backup duration and backup logs.
    • With Hyper Backup Vault installed, you can launch the Hyper Backup Explorer by clicking the backup target in File Station.
18. Hyper Backup Explorer​(for Windows and Linux)
    • Now you can use Hyper Backup Explorer to browse backup data right from your Windows and Linux computers.
19. Note Station
    • Offline Note Station is now available in Chrome Web Store. You can create and edit notes or to-­do lists without Internet connection, and all updates will be synchronized to Note Station in DSM when the Internet is connected.
    • Use Synology Web Clipper to save selected content of MailPlus or Gmail to Note Station.
    • Convert tables into charts, including line charts, bar charts, and pie charts.
    • Choose a template for your presentation.
    • Click to expand images to their original size in presentation mode.
    • Apply heading formats to texts to switch slides in presentation mode.
    • Create Smart Notebooks according to different criteria. Existing and future notes that match the criteria will be automatically added to the Smart Notebook.
    • Insert the internal link of another note and open it directly via the hyperlink.
    • The search feature in Note Station now includes results based on the content of attached files of various formats, including PDF, Office, Open Office, and iWork file.
    • The attachments in PDF, word, excel, and powerpoint formats can be previewed in Note Station directly with the Document Viewer package.
    • You can add stars, remarks and subtasks to to-­do tasks.
    • You can share notes or notebooks with a group.
    • Supports exporting/importing to­-do tasks for backup.
    • Allows you to output to-­do tasks to a new note and customize its display options.

20. PDF Viewer/Document Viewer

    • View various popular document formats on DSM, including Microsoft Office and Open Office files (Document Viewer only).
    • Brand-­new designed user interface with comprehensive tools including rotation, zoom­-in/out, search, and much more.
    • Securely share your confidential documents by disabling the download, select & copy, and print functions.
    • Outline mode helps you quickly find the desired section in the document.
    • Drag mode can be extremely useful when viewing large pictures in the document.
    • Attachments can be collected for quick browsing.
    • Document Viewer is available on the following models:
      1. 16­-series: RS18016xs+, RS2416+, RS2416RP+
      2. 15­-series: RC18015xs+, DS3615xs, DS2415+, DS1815+, DS1515+, RS815+, RS815RP+, DS415+
      3. 14­-series: RS3614xs+, RS3614xs, RS3614RPxs, RS2414+, RS2414RP+, RS814RP+, RS814+, RS10613xs+, RS3413xs+
      4. 13­-series: RS10613xs+, RS3413xs+, DS2413+, DS1813+, DS1513+, DS713+
      5. 12­-series: DS3612xs, RS3412RPxs, RS3412xs, RS2212RP+, RS2212+, DS1812+, DS1512+, RS812+, RS812RP+, DS712+, DS412+
      6. 11­-series: DS3611xs, RS3411xs, RS3411RPxs, DS2411+, RS2211RP+, RS2211+, DS1511+, DS411+II, DS411+

21. Intrusion Prevention (Beta)

    • Intrusion Prevention guards your Synology NAS from network threats. With its rule database, malicious packets can be identified to prevent malicious parties from infecting and compromising your Synology NAS.

22. Antivirus -­ McAfee

    • Upgraded ClamAV and McAfee scanning engine.
    • Fixed an issue where operations might fail when deleting or restoring a large amount of files from the quarantine.
    • Fixed an issue where DSM system files might be deleted due to false alarm.
23. Antivirus -­ Essential
    • Upgraded ClamAV and McAfee scanning engine.
    • Fixed an issue where operations might fail when deleting or restoring a large amount of files from the quarantine.
    • Fixed an issue where DSM system files might be deleted due to false alarm.
24. VPN Server
    • Enhanced transmission performance of PPTP/L2TP.
    • Minor bug fixes.
25. Web Station
    • Each Virtual Host can be set with an individual setting including PHP version, server backend, document root and secure connections.
    • More PHP extensions are supported to increase the flexibility of your own web site.
26. Media Server
    • Supports hardware transcoding on DS216play, DS716+, and DS216+.
    • Fixed an issue where video may not be sought when streaming videos from DS216play and DS716+.
    • Minor bug fixes.
27. Logitech Media Server
    • Updated the stable version to 7.7.6.
28. Audio Station
    • Provides year information in album list.
    • Provides folder path of playlist for better recognition.
    • Enhanced browsing performance.
    • Added support for multi­-genre, allowing you to classify music more flexibly.
    • Added an artist category in genre.
29. Photo Station
    • Added support for watermark to help protect the copyright of your photos.
    • The plugin in WordPress, Joomla, and Drupal allows you to access Photo Station directly and add photos or albums to these three platforms.
    • Windows AD and LDAP users can use Personal Photo Station now.
    • Supports html script for embedding Photo Station to other websites.
    • Security enhancement with XSS attack prevention.
    • Extend file size limitation of uploading and playing videos from 2GB to 32GB for 64 bits models.
    • Added a feature to prevent photos from being embedded via HTML iframe.
    • Supports migration flow to export Photo Station blog and import to WordPress.
    • Adjusted re­-order flow and new method to create a new album on photo wall.
    • Shows photo shooting time and geolocation information on lightbox as well as slideshow mode.
30. Docker
    • Upgraded to Docker 1.9.
    • Supports Docker Compose.
31. Download Station
    • Download files from more file hosting sites.
    • Added support for more premium accounts.
    • Added support for downloading tasks that require CAPTCHA passwords.
    • Personal notification is supported so every user can set their personal email to receive notifications.
    • File hosting plugin can be updated automatically.
    • Degraded NZB files can be repaired with .par2 files.
32. Storage Analyzer
    • Supports the application backup in the Hyper Backup package.
33. CardDAV
    • You can now edit contact information in DSM.
    • You can quickly build your contact list by importing data.
    • Supports exporting contact information to be used in other software.
34. Java 7/8
    • Java derives much of its syntax from C and C++ but has a simpler object model and fewer low-­level facilities than either.
    • Java Manager is replaced by the new Java package for a more convenient installation procedure.
    • You may enjoy the built­-in Java or manually install Java from Oracle for enhanced compatibility.

Known Issues & Limitations

1. For locally modified files in a read­-only sync folder, the status will always be "syncing" in DS cloud.
2. Re-­enabling indexing services previously set will be required when you upgrading DSM 6.0.
3. Upgrade to DSM 6.0 will trigger media indexing for Audio Station browsing enhancement.
4. Because of structure change, some notifications that occurred before the upgrade could abnormally displayed. All notifications generated after upgrading to DSM 6.0 will be shown normally.
5. MailPlus and MailPlus Server:
   • Initial retrieval of mail using the POP3 fetch function may take longer than usual.
   • MailPlus Server is required to be configured before running MailPlus.
   • MailPlus is required to be installed on both Synology NAS devices to ensure stability when switching load balancing services from one server to the other for MailPlus Server.
   • Both Synology NAS devices must have identical MailPlus application portal and privilege settings to ensure stability when switching load balancing services from one server to the other for MailPlus Server.
   • To upgrade the MailPlus Server in active­-active mode from Beta 1/Beta 2 version to the official version, it is required to remove the cluster mechanism first and upgrade two nodes separately. After the upgrade, set up the active-­active cluster with two nodes again and the data will be synced automatically. Such initiative will not be required after DSM 6.0.
6. The function to customize library visibility will not be applied to DS video in the following mobile platforms: iOS, Windows Phone, Roku TV, and Samsung TV.
7. After converting the permission type to ACL, the settings in Photo Station and File Station may still be inconsistent. For better user experience, the shared folder "photo" will be converted automatically back to Linux mode if you have done the ACL conversion in DSM 6.0 RC.

(2019-01-02)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding Netatalk (Synology-SA-18:62).
2. Fixed a security vulnerability (Synology-SA-18:64).

(2018-06-25)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities (Synology-SA-18:33).

(2018-05-23)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. Updated Privacy Statement

Fixed Issues

1. Fixed a security vulnerability regarding Wget (CVE-2018-0494).

(2017-11-15)

Fixed Issues

1. Fixed a security vulnerability regarding File Station.

(2017-11-08)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed multiple security vulnerabilities regarding Linux kernel (CVE-2017-1000253, CVE-2017-1000364, CVE-2017-1000365, CVE-2017-1000370, CVE-2017-1000371).
2. Fixed multiple security vulnerabilities regarding KRACK, an implementation flaw in WPA2 protocol (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13084, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088).
3. Fixed multiple security vulnerabilities regarding BlueBorne (CVE-2017-1000250, CVE-2017-1000251).
4. Fixed a security vulnerability regarding libsoup (CVE-2017-2885).
5. Fixed multiple security vulnerabilities regarding OpenSSL (CVE-2016-2177, CVE-2016-2178, CVE-2016-2179, CVE-2016-2180, CVE-2016-2181, CVE-2016-2182, CVE-2016-6302, CVE-2016-6303, CVE-2016-6304, CVE-2016-6306).
6. Fixed a security vulnerability regarding executing S.M.A.R.T. test.

(2017-07-19)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding DSM login page (CVE-2017-9553).
2. Fixed a security vulnerability regarding Samba (CVE-2017-11103).

(2017-06-01)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

Fixed Issues

1. Fixed a security vulnerability regarding samba service (CVE-2017-7494).

(2016-07-27)

1. Applied the workaround to mitigate a security vulnerability of libupnp module (CVE-2016-6255).

(2016-05-11)

1. Upgraded NTP to 4.2.8p7 to address multiple vulnerabilities (CVE-2016-1547, CVE-2016-1548, CVE-2016-1549, CVE-2016-1550, CVE-2016-1551, CVE-2016-2516, CVE-2016-2517, CVE-2016-2518, CVE-2016-2519).
2. Upgraded OpenSSL to 1.0.1t to address multiple vulnerabilities (CVE-2016-2105, CVE-2016-2106, CVE-2016-2107, CVE-2016-2108, CVE-2016-2109, CVE-2016-2176).
3. Before the official patch is released, workaround is applied to mitigate multiple vulnerabilities of ImageMagick module (CVE-2016-3714, CVE-2016-3715, CVE-2016-3716, CVE-2016-3717, CVE-2016-3718).

(2016-04-28)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released updates since DSM 5.2-5644.

Fixed Issue

1. Improved performance of backup tasks and data restoring in Backup & Restore.
2. Improved backup stability in Backup & Restore when files are being edited.
3. You may now choose to reset the system without resetting the password at Control Panel > Update & Restore.
4. Added full-speed fan mode to provide the best cooling effects for Synology NAS.
5. Fixed multiple vulnerabilities regarding Samba module (CVE-2016-2118, CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115).
6. Fixed an issue where iSCSI service could not start upon system boot with snapshot retention policy enabled in DSM 5.2-5644.
7. Fixed an issue where iSCSI service could not respond under certain conditions when LUN was being created or removed.
8. Fixed an issue where the system could not enter hibernation with Snapshot Manager for VMware registered.
9. To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.
10. Fixed an issue where permission settings for a shared folder could not be edited in Windows if the folder was mounted via SMB.

(2016-04-13)

1. Fixed a security vulnerability regarding Samba file service (CVE-2016-2118, also known as Badlock).

   Note: This update does not require system reboot.

(2016-03-09)

Fixed Issues

1. Enhanced the stability of Btrfs file system.

(2016-02-19)

Fixed Issues

1. Updated Firewall filter policy to fix a security vulnerability caused by stack-based buffer overflow (CVE-2015-7547). This fix may impact read/write performance on the following models by no more than 15%, for which Synology is working on an enhancement in the future release.
   • 16-series: DS216se
   • 15-series: DS115j
   • 14-series: EDS14, DS114, DS214se, RS214, DS414slim
   • 13-series: DS213j, DS213air, DS213, DS413j
   • 12-series: DS112, DS112+, DS112j, DS212, DS212j, DS212+, RS212, RS812
   • 11-series: DS111, DS211, DS211+, DS211j, DS411, DS411slim, DS411j, RS411
   • 10-series: DS110j, DS210j, DS410j

(2016-02-04)

Fixed Issues

1. Fixed an issue where some video formats cannot be transcoded on DS216play.

(2016-01-22)

Fixed Issues

1. Fixed two security vulnerabilities of FFmpeg modules (CVE-2016-1897 and CVE-2016-1898).
2. Fixed a security vulnerability related to Linux Kernel (CVE-2016-0728).
3. Upgraded OpenSSL to 1.0.1q to address multiple vulnerabilities (CVE-2015-3194, CVE-2015-3195 and CVE-2015-3196).
4. Fixed two security vulnerabilities of OpenSSH module (CVE-2016-0777 and CVE-2016-0778).
5. Improved algorithm to enhance the security level for setting up port forwarding in DSM.
6. Fixed two security vulnerabilities to prevent cross-site scripting (XSS) attacks.
7. Fixed a security vulnerability related to GnuTLS (CVE-2015-7575).
8. To enhance the security level, auto block will be enabled after this update.
9. Enhanced network stability when port forwarding is configured.
10. Upgraded PHP to 5.5.31.

(2015-12-02)

Fixed Issues

1. Improved the compatibility of WD Red hard drives with Synology expansion units.
2. Improved the stability when running memory test in Synology Assistant on XS/XS+ models.
3. Fixed an issue where the passive server in the high-availability cluster might take up too much space in the system partition when storing system statistics.

(2015-11-17)

Fixed Issues

1. To enhance the security level, Synology's default administrator account "admin" with the blank password will no longer be allowed and will be disabled after this update. It is also highly recommended that you increase the password strength of all accounts belonging to the administrators group.
2. Enforced a minimal password length of six characters for the default admin account.
3. Improved general stability when numerous application privilege rules are applied to individual users/groups.

(2015-11-13)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.2-5592.

Fixed Issues

1. Improved stability of FTP connections.
2. Improved stability when copying large files on DS216play.
3. Improved general stability and security fixes of NTP service (CVE-2015-7871).
4. Supports Data Scrubbing for iSCSI LUN (Block-Level) in Storage Manager.
5. Improved the stability of encrypted backup in models with ARM processors.
6. Improved general stability of Btrfs file system.
7. Increased the connection limit for Log Receiving in Log Center.
8. Upgraded PHP to 5.5.30 to address multiple vulnerabilities (CVE-2015-5589, CVE-2015-5590, CVE-2015-6834, CVE-2015-6835, CVE-2015-6836, CVE-2015-6837, CVE-2015-6838, and CVE-2015-3152).
9. Fixed an issue where a DSM critical patch could not be manually uploaded when the system was in a Hybrid HA cluster.
10. Minor bug fixes.

(2015-10-15)

Fixed Issues

1. Fixed an issue where Security Advisor on DS216play reported a false alarm due to errors in retrieving its database.

(2015-09-07)

Fixed Issues

1. Restored the mandatory file (/usr/syno/bin/zip) that has been removed due to Antivirus Essential's false-positive detection.
2. Upgraded Apache HTTP Server to 2.2.31 to address one security vulnerability (CVE-2015-3183).
3. Upgraded PHP to 5.5.28 to address two security vulnerabilities (CVE-2015-5589 and CVE-2015-5590).
4. Fixed two security vulnerabilities to prevent cross-site scripting (XSS) attacks.
5. Fixed a security vulnerability of PCRE library (ASA-201508-11).
6. Fixed an issue where DSM cannot be updated after system recovery on certain models (DS2415+, DS1815+, DS1515+, RS815RP+, RS815+, DS415+).

(2015-08-20)

Fixed Issues

1. Optimized fan settings for DS715 and DS215+.
2. Enhanced compatibility with hard drives.
3. Improved the compatibility with UPS devices.
4. Fixed an issue where the NTP (Network Time Protocol) service became temporarily unavailable after manual calibration.
5. Fixed an issue where uploading files could fail with non-admin accounts on EDS14.

(2015-07-30)

Fixed Issues

1. Fixed an issue where DS1515 would be unable to shut down properly.
2. Enhanced RAID reliability when repairing volumes from degraded state.
3. Improved the stability of LUN backup.
4. Improved memory usage for Btrfs file system.
5. Improved the compatibility with UPS devices.
6. Improved the stability when repairing the passive server of a high-availability cluster.

(2015-07-15)

Fixed Issues

1. Fixed an issue where applied settings could not be correctly displayed when changes were made at Group > Applications.
2. Upgraded OpenSSL to 1.0.1p to address a security vulnerability (CVE-2015-1793).

(2015-07-01)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.2-5565.

Fixed Issues

1. Improved the stability of Synology High Availability system when excessive numbers of volumes are created on passive servers.
2. Improved the compatibility of network printers.
3. Upgraded Samba to 4.1.18 for issue fixes and stability enhancements.
4. Improved the stability when expanding volumes on RAID 5 or 6.
5. Improved the performance of Synology High Availability with SSD cache enabled.
6. Improved the USB storage compatibility on DS215j.
7. Upgraded PHP to 5.5.26 to address multiple security vulnerabilities (CVE-2015-3414, CVE-2015-3415, CVE-2015-3416, CVE-2015-2325, CVE-2015-2326, and CVE-2015-4598).
8. Upgraded OpenSSL to 1.0.1o to address multiple security vulnerabilities (CVE-2015-4000, CVE-2015-1788, CVE-2015-1789, CVE-2015-1790, CVE-2015-1791, and CVE-2015-1792).
9. Security enhancements on Personal Web Station.
10. Fixed a security vulnerability to prevent cross-site scripting (XSS) attacks.
11. Fixed an issue where system would reboot while disabling a connected iSCSI target with the Multiple Connection Session setting enabled.
12. Fixed an issue where High Availability Manager would fail to switch over after repairing read-write caches.
13. Fixed multiple issues with UPS settings.
14. Fixed multiple issues with Port Forwarding settings.
15. Minor bug fixes.

(2015-06-09)

Important Information

1. A thorough investigation has been done, and it is confirmed that DSM and its related packages are not impacted by the LogJam vulnerability because of the way Synology implements OpenSSL in our system.

Fixed Issues

1. Improved the stability of SHR expansion.
2. Improved the stability of SMB transfer when the system is being accessed by an excessive number of clients.
3. Fixed multiple kernel vulnerabilities (CVE-2014-3122, CVE-2014-3153, CVE-2014-0196, and CVE-2014-4699).
4. Fixed an issue where CPU usage could remain high when widget is enabled.
5. Fixed an issue where LDAP users could fail to log in to DSM.
6. Fixed an issue where files could not be downloaded via Windows' terminal.
7. Fixed an issue where system cannot enter hibernation.
8. Fixed an issue where some folders with non-English names would become inaccessible via SMB.
9. Fixed an issue where volumes/iSCSI LUN cannot be displayed after the Synology High Availability system resumes from safe mode with UPS connected.

(2015-05-21)

Fixed Issues

1. Fixed an issue where users could fail to join domain when the domain admin account contains specific characters.
2. Improved the compatibility with USB devices.
3. Fixed a security vulnerability to prevent cross-site scripting attacks (XSS).
4. Upgraded PHP to 5.5.25 to address multiple security vulnerabilities (CVE-2006-7243, CVE-2015-4021, CVE-2015-4022, CVE-2015-4024, CVE-2015-4025, CVE-2015-4026).
5. Improved the compatibility with 3rd party DTV applications.
6. Fixed an issue where SSD cache volume information may not be displayed correctly in Resource Monitor.
7. Fixed an issue where users with guest accounts would be unable to create new files or folders via SMB protocol.

(2015-05-12)

Compatibility and Installation

1. DSM 5.2 can only be installed on Synology products running DSM 5.0 or above. Before starting, please log in to DSM and go to DSM Update to install the latest DSM.
2. Some features have specific hardware requirements and are only available on certain Synology NAS products.

Important Notes

1. DSM 5.2 is the last supported major DSM version for all 10-series models.
2. An issue of data consistency caused by SSD TRIM is not resolved yet; as a result, SSD TRIM is currently disabled in DSM 5.2.
3. DSM 5.2 is the last DSM version to support Time Backup as an add-on application in Package Center. Time Backup features will be fully merged into the built-in Backup package in future releases. Existing Time Backup users will not be affected.
4. Sharing via Facebook and Google+ will no longer be supported starting from DSM 5.2.
5. The link speed of drive tray 7 and 8 of DS1815+ is adjusted to 1.5Gbps to improve system stability and HDD compatibility. (added on 2016/8/12)

What’s New in DSM 5.2

1. Single Sign-On

   • You can register multiple DSM and access them using one set of credentials. After initial login, linked DSM accounts will automatically log in to avoid credential re-authentication.

2. Windows File Sharing

   • Added SMB3 and end-to end data encryption support.

3. Backup and Replication

   • Added support for file-level restoration with File Version Browser in multi-version backup tasks.
   • You can set up backup rotation to recycle old backup versions automatically in multi-version backup tasks.
   • Added data transfer encryption support for multi-version backup.
   • Added support for Amazon S3 China Region as a backup destination.

4. iSCSI LUN Snapshots

   • You can take iSCSI snapshots more frequently, up to every five minutes.
   • You can set the snapshot retention policy to retain a specific number of versions for hourly, daily, weekly, monthly, and yearly snapshots.

5. Link Aggregation

   • Added support for two new modes when creating a bond interface: Adaptive Load Balancing and Balance XOR.

6. SSD Cache

   • SSD cache now has a smaller memory footprint, consuming 90% less memory than DSM 5.1 for newly created SSD caches.

7. File Station

   • You can manage and transfer files to popular public cloud services such as Dropbox, Box, Google Drive, and OneDrive.
   • The built-in photo viewer now supports full-screen mode.
   • You can drag and drop files between two browsers.
   • You can set the number of times a shared link can be accessed.
   • Added playlist support for the built-in audio player.
   • You can use the built-in mail client to send shared links.

8. QuickConnect

   • Enhanced stability.
   • DSM will automatically add port forwarding rules required by QuickConnect services on your compatible UPnP router, saving your time on network configuration.

9. DSM log-in page

   • You can add welcome messages to deliver information to users before they log in to the system.

10. DSM Help

    • You can reach online resources such as FAQ and compatibility lists in DSM Help now.
    • One more tutorial about how to back up data from your computer is added in the section of Get started with DSM.

11. Misc

    • You can customize the security level of SSH connections by selecting which encryption algorithm(s) to use.
    • Added more flexible port forwarding rules, including assigning random port numbers, and customized port settings.
    • You can set usage quotas for different groups. The group usage quota is automatically applied when a user is added to the group.

What’s New in Packages

1. Single Sign-On Package

   • Based on the OAuth2 standard, SSO Server package turns Synology NAS into a SSO server that allows developers to register their web applications to the server and utilize the single sign-on feature. This increases daily productivity by saving time spent on re-authentication.

2. Docker

   • Docker is a lightweight virtualization application that gives you the ability to run thousands of containers created by developers from all over the world on DSM. The hugely popular built-in image repository, Docker Hub, allows you to find shared applications from other talented developers.
   • A step-by-step tutorial is introduced to guide you through the basic container creation.

3. Note Station

   • Added to-do list feature. You can add tasks to notes or add them independently to the to-do list.
   • Manage tasks by specifying a priority, due date, and reminder.
   • Synology Web Clipper is now available on the Chrome Web Store. You can clip web content directly to Note Station.
   • Export notebooks to a nsx file for backup or for importing to another Synology NAS.
   • Export individual notes as HTML files so that users without Note Station can read them.
   • You can archive seldomly used notebooks so that they will not be displayed in the notebook section or in search results.
   • Enhanced Note Station file structure. A three-tier structure (Shelf, Notebook, and Note) provides greater flexibility for organizing Note Station.
   • You can display notes in presentation mode.
   • You can create new notes in a joined notebook if you were given modify permissions.
   • You can share notes via the built-in DSM email application.
   • You can change the default notebook.
   • You can adjust the default note font size.
   • Import notes from YinXiangBiJi.
   • Better note version conflict handling.
   • Todo badge number on Desktop icon.

4. Cloud Station

   • Added support for low-latency smart polling.
   • You can assign different historic version numbers for each shared folder.
   • Enhanced general performance.
   • Added support for native renaming operation.
   • Administrators can enable/disable Cloud Station directly from Package Center.
   • Added support for File Station Recycle Bin.
   • Files greater than 10GB can be synced.

   • Updated PC client for Windows, Mac and Linux:

     1. Added a quick setup wizard.
     2. Added a search feature to automatically find all Synology NAS in the local area network.
     3. Added a system tray menu in graphic user interface.
     4. You can right-click to stop or resume syncing for specific subfolders.
     5. You can right-click a synced folder to generate a folder sharing link.
     6. You can right-click any file on your computer to copy it to the Cloud Station folder.
     7. Added a client-side sync log.

5. Cloud Sync

   • Added unidirectional sync from NAS to public cloud and from public cloud to NAS.
   • You can encrypt and compress data sent to public cloud storage.
   • Added support for Amazon S3 compatible public cloud service providers.
   • Added support for WebDAV public cloud service providers.
   • Added support for Amazon Cloud Drive.
   • Added support for Megafon Disk.
   • Added support for native renaming operation (support level differs with public cloud storage API).
   • You can customize both task name and polling period.
   • You can sync files as large as 10GB with OneDrive.
   • Added support for File Station Recycle Bin.

6. Mail Server

   • Added attachment filter to block specific file extensions.
   • You can receive real-time notifications regarding daily quota status.
   • Added support for SPF/DKIM and DMARC sender validation.
   • Added customized auto-reply and content setting features.
   • Daily quotas can be set by user.

7. Glacier Backup

   • Enhanced to handle Amazon server-side speed limit.
   • Enhanced general performance.

8. Video Station

   • You can use hotkeys to fast forward, rewind, and adjust the volume during video playback.
   • Subtitle files can now be located anywhere on your Synology NAS and no longer need to match the filename of your video files. Simply select them using the built-in chooser in Video Station during playback.
   • More code-pages supported to correctly recognize subtitles in different languages.
   • You can set a timing offset to sync subtitles with video playback.
   • You can customize video posters by selecting an image from your Synology NAS.
   • Use the shortcut on the library to quickly add video folders.
   • You can delete videos directly from Video Station
   • Supported right-click context menu to access useful functions more quickly.

9. Audio Station

   • Added support for indexing CUE sheet files to display all indexed audio tracks, and the song information of an undivided album file for management (requires DSM 5.2).
   • Added support of transcoding FLAC/APE, ALAC/AAC, OGG, AIFF formats for DLNA players.

10. Photo Station

    • A brand-new design that gives Photo Station mobile a refreshed look-and-feel. The update includes two major improvements: watching videos and linking directly to details page of a photo.
    • You can select specific albums when creating a smart album.
    • More EXIF information is displayed in the lightbox page, and can also be added as conditions when creating smart albums.

11. Download Station

    • Previews for photos and videos are available for torrent downloads.
    • Added support for HTTP downloads with multiple connections.

12. Media Server

    • Resumed video transcoding support (This feature is supported by select models. Please go here for detailed information).

13. Redmine

    • Redmine is a flexible project management web application. It has numerous features and can be run on Synology NAS via Docker.

14. GitLab

    • GitLab is a web-based Git repository manager with wiki and issue tracking features. It has numerous features and can be run on Synology NAS via Docker.

15. LXQt

    • LXQt is a desktop utility built on QT with partial Razor-qt and LXDE components. It comes with a basic graphical user interface which gives users the ability to leverage certain operating system features, such as web browsing. It has numerous features and can be run on Synology NAS via Docker.

16. SpreeCommerce

    • SpreeCommerce is a full-featured storefront tool built on common standards so you do not have to compromise speed to market, efficiency, or innovation. You can also easily leverage the advantages of modular design to configure, supplement, or replace the functionalities you need. It has numerous features and can be run on Synology NAS via Docker.

17. Discource

    • Discourse is a forum application software with a focus on user experience by introducing infinite scrolling, live updates, drag and drop attachments and more. It has numerous features and can be run on Synology NAS via Docker.

18. MantisBT

    • MantisBT is an open source, web-based issue tracker and project management tool with a focus on simplicity and flexibility. Users are able to get started quickly and manage their projects effectively, making collaboration with team members and clients easy and professional.

19. LimeSurvey

    • LimeSurvey is a powerful survey creation tool that help you easily create and publish intuitive and question-and-answer surveys and collect responses without the requirement of technical background. LimeSurvey also provides graphical analysis of the result for you to quickly find the information from the statistics. You also have the full control of whom to access the survey, either publish the survey publicly or limit only the users with the "once-only" token.

20. CMS

    • Enhanced general performance.
    • Bug fixes and usability enhancements.

(2015-05-19)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.1-5022.

Fixed Issues

1. Fixed an issue where some services could not function normally after applying or removing Link Aggregation settings when the system also serves as a DHCP server.
2. Upgraded ppp to 2.4.7.
3. Fixed an issue where some information in the log in Log Center could not display correctly.
4. Fixed a vulnerability related to GnuTLS (CVE-2015-0294).
5. Fixed an issue where some packages would be disabled after DSM update. This fix will take effect in the next DSM update.
6. Enhanced stability when creating a High Availability cluster.
7. Upgraded Apache to 2.2.29 to address multiple vulnerabilities (CVE-2013-5704, CVE-2014-0118, CVE-2014-0226 and CVE-2014-0231).
8. Upgraded PHP to 5.5.2 to address two vulnerabilities (CVE-2015-0235 and CVE-2015-0273).
9. Minor bug fixes.

(2015-04-23)

Fixed Issues

1. Fixed a vulnerability that could allow unauthorized access to the shared folders via SMB protocol.

(2015-03-21)

Fixed Issues

1. Upgraded OpenSSL to 1.0.1m to address multiple vulnerabilities (CVE-2015-0204, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0292, CVE-2015-0293, CVE-2015-0209, and CVE-2015-0288).

(2015-03-02)

Fixed Issues

1. Fixed a security vulnerability related to SAMBA (CVE-2015-0240).

(2015-02-05)

Fixed Issues

1. Implemented fixes related to the GHOST vulnerability (CVE-2015-0235).
2. Upgraded PHP to 5.5.21 to address multiple vulnerabilities (CVE-2015-0231, CVE-2014-9427, and CVE-2015-0232).

(2015-01-22)

Fixed Issues

1. Improved the stability of SHR expansion.
2. Improved stability of iSCSI transfer.
3. Upgraded OpenSSL to 1.0.1k to address multiple vulnerabilities (CVE-2014-3571, CVE-2015-0206, CVE-2014-3569, CVE-2014-3572, CVE-2015-0204, CVE-2015-0205, CVE-2014-8275, and CVE-2014-3570).
4. Upgraded PHP to 5.5.20 to address one vulnerability (CVE-2014-8142).

(2015-01-12)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.1-5021.

Fixed Issues

1. Improved hard-drive compatibility for DS215j.
2. Improved efficiency of backup tasks.
3. Fixed an issue where DSM updates could fail to install on systems with High Availability enabled.

(2014-12-27)

Fixed Issues

1. Fixed an issue where the failure of photo indexing may occur when usernames contain special characters.
2. Upgraded BIOS to enhance SATA compatibility on RS3614xs and RS3614RPxs models.
3. Enhanced stability on file-copying to USB drives.
4. Upgraded NTP to version 4.2.8 to address multiple vulnerabilities (CVE-2014-9293, CVE-2014-9294, CVE-2014-9295, and CVE-2014-9296).
5. Enhanced the stability of QuickConnect connection to Surveillance Station.

(2014-12-18)

Fixed Issues

1. Fixed an issue where 10GbE interface on DS2015xs could not function normally.

(2014-12-17)

What's New

1. This update includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.1-5004.

Fixed Issues

1. Enhanced data security by disabling "Mount automatically on start-up" after restoring an encrypted shared folder.
2. Fixed a vulnerability that allows senders to access unintended destinations during a backup job.
3. Enhanced stability on Amazon S3 on large file backup.
4. Upgraded OpenVPN to 2.3.6 to address a security vulnerability.
5. Fixed a vulnerability that allows local users to initiate a denial of service by queuing the maximum number of file descriptors (CVE-2014-7824).
6. Upgraded PHP to 5.5.19 to address multiple vulnerabilities (CVE-2014-3669, CVE-2014-3670, CVE-2014-3668, and CVE-2014-3710).
7. Improved DTV dongle compatibility.
8. Improved file-copying stability on DS2015xs.
9. Fixed an issue where DS213+ and DS413 could power up unexpectedly when backup tasks are scheduled.
10. Minor bug fixes.

(2014-11-29)

Fixed Issues

1. Fixed an issue that could cause a false alarm in Security Advisor after upgrading to DSM 5.1-5004 Update 1.
2. Fixed an issue where Firewall rules did not apply correctly.
3. Fixed a security issue that could allow remote attackers to cause a denial of service via a crafted ECC certificate or certificate signing requests (CVE-2014-8564).
4. Enhanced HA stability on system updates.
5. Fixed an issue where DS213+ and DS413 could fail to execute scheduled tasks after entering system hibernation.
6. Fixed the send-mail function in PHP.
7. Fixed an issue where packages failed to start or users were unable to install packages on entry models.
8. Fixed an issue where CGI cannot be executed in Web Station.
9. Fixed an issue where DSM mobile was not correctly displayed on Chrome v39 on mobile devices.
10. Fixed an issue where installation of digitally-signed packages could fail on EDS14.
11. Improved QuickConnect mechanism on complex network environment.
12. Fixed an issue where scheduled power-off function could fail to execute when DSM Auto Update was enabled.
13. Fixed an issue where false warning could display in System Health on Play-series.
14. Fixed "Customize PHP open_basedir" function to accept directories that have not been created.
15. Enhanced security on SSH/Telnet connections.
16. Fixed an issue where EDS14 could fail to apply updates.

(2014-11-07)

Compatibility and Installation

1. DSM 5.1 can only be installed on Synology products running DSM 5.0. Before starting, please log in to DSM and go to Control Panel > Update & Restore > DSM Update to install the latest DSM.
2. Some features have specific hardware requirements and therefore are only available on certain Synology NAS products.
3. Weather information in the DSM login page and CIFS Scale-Out Cluster will neither be available nor supported in DSM 5.1.

What's New in DSM 5.1

1. Security Advisor
   • Security Advisor is a DSM security application that scans your DSM settings and Synology NAS and recommends changes that help keep your Synology NAS safe.
2. AppArmor
   • Application Armor kernel security module is now enabled in DSM. Each system program is associated with a security profile that restricts certain functions, protecting against unknown threats from malicious software.
3. Service by Interface
   • You can set the network interface that each service will use in Control Panel > Info Center > Service.
4. App Privileges
   • You can assign application privileges for local and domain groups.
   • You can define application privileges according to IP address.
5. DSM Auto Update
   • You can create a schedule to install DSM updates automatically to keep your Synology NAS up-to-date.
6. Package Center
   • Trust level protects you from installing altered packages or packages from unknown sources on your Synology NAS.
7. 2-step verification enforcement
   • 2-step verification can be enforced on admin groups or all users.
8. Backup and Replication
   • You can now back up data from any Synology NAS (A) to a volume on another Synology NAS (B) using its non-admin account (on B) with network backup destination privileges.
   • Added backup destination support for Azure, SFR S3, and hicloud S3.
   • The following packages can now be backed up via the built-in Backup & Replication feature: VPN Server, DNS Server, Mail Server, Proxy Server, RADIUS Server, Directory Server, and Asterisk.

9. LUN Backup

   • iSCSI LUN network backup performance has been enhanced by 169%, as illustrated in the below comparison:

   LUN Backup	DSM 5.0	DSM 5.1	Improvement
   Local Backup	445 MB/s	863 MB/s	94%
   Network Backup	129 MB/s	348 MB/s	169%

10. iSCSI LUN Snapshots

    • You can set a schedule for creating iSCSI LUN application-consistent snapshots to continuously protect your LUN.
    • You can lock a specific snapshot to prevent it from being removed by retention policy.
11. iSCSI LUN Allocation Unit Size
    • You can configure the iSCSI LUN using advanced features to optimize the performance.
12. VMware VAAI NAS
    • Added NFS support for two primitives: Full File Clone and Reserve Space.
    • Please note that you should install the Synology NFS Plug-in for VMware VAAI and read the instructions in README.txt to make sure installation is successful.
13. UNMAP Support for Windows Server 2012
    • Added support for Storage Space Reclamation via UNMAP command, which can be triggered by file deletion or a file system level trim.
14. SSD Cache
    • You can now create a read-only cache with one SSD.
    • SSD read hit rate is displayed in real-time as well as daily, weekly, and monthly intervals.
    • SSD Cache Advisor helps you determine the required SSD cache size.
15. High Availability Manager
    • Added Read/Write SSD Cache support for HA cluster.
    • High Availability is now built-in for DSM 5.1.
16. File Station
    • You can manage and transfer files to another WebDAV/FTP server.
    • Added support for FTP, SFTP, WebDAV, and WebDAV over HTTPS.
    • You can share files as attachments using a simple email client.
    • You can use the smart drag and drop feature to apply different actions to each copy or move file conflict.
    • You can share files to DSM users and they will receive notifications.
    • You can now play music using the built-in audio player.
17. IPv6
    • Added IPv6 support for VPN client, Log Center, QuickConnect and DDNS.
18. Static Route and Multiple Gateways
    • You can set the default gateway on each network interface.
    • You can define static routes based on your network environment.
    • You can use the IP Routing Table to view how network packets will be routed.
19. Storage Analyzer
    • Storage Analyzer allows you to quickly view overall usage trends of your Synology NAS, create and manage tasks to analyze storage spaces, and generate detailed reports on volume usage.
    • You can select report types, create a schedule to generate periodic storage reports, and easily view previous reports that match the specified time or criteria.
20. Storage Manager (for RS10613xs+, RS3413xs+, RS3614xs, RS3614RPxs, RS3614xs+ only)
    • You can now create volumes up to 200 TB large.
    • You can create RAID groups and RAID arrays. A RAID group for Multiple Volumes or iSCSI LUNs (Block-Level) that use RAID 5 or RAID 6 may contain multiple RAID arrays.
    • You can no longer create or expand Synology Hybrid RAID arrays, however existing volumes can still be used.
21. Log Center
    • Added IPv6 support for log sending and receiving.
    • Added supports for customized log formats.
22. MyDS Center
    • Added a wizard to consolidate multiple MyDS accounts into one account for easy management and convenience. If you have multiple MyDS accounts, complete this wizard so you can continue enjoying our MyDS Center services.
    • You can easily monitor MyDS related services (DDNS/QuickConnect) at a glance.
    • You can modify account information and subscriptions directly in DSM.
23. Text Editor
    • You can now use hotkeys to quickly perform common actions.
    • You can convert between Traditional and Simplified Chinese text.
24. DSM Desktop
    • Push notifications can now be sent via Chrome and Safari.
    • You can change the main menu style to drop-down.
    • You can adjust the size of Desktop icons to be smaller.
25. Misc
    • You can set global firewall rules for all network interfaces.
    • You can set default permissions for external drives.
    • You can define each FTP user’s root folder to be a folder other than their home folder.
    • You can filter Domain Users and Groups by Organizational Unit.
    • A command-line-based FTP client is built-in for automated tasks.
    • You can now customize the SSH port.
    • Python core is now built-in.

What's New in Packages

1. Note Station
   • Note Station helps you fully enjoy writing, viewing, managing, and sharing content-rich notes. It is very easy to create content with rich text editing, media embedding, attachments, and much more. Manage your notes by using tags and grouping notes into Notebooks. You can also import your notebooks and notes from Evernote to centralize all your notes in one convenient place. When you are ready, Note Station makes sharing your content via social networking platforms simple and quick. Create, share, and enjoy!
2. Cloud Station
   • You can sync data according to Unix or Windows ACL privileges.
   • Added support for syncing encrypted shared folders.
   • Administrators can control the file type and file size specific users can sync.
   • Offers in-app log.
   • You can disable versioning to reduce storage consumption.
   • Cloud Station Client offers MSI, DEB, and RPM installers for Windows and Linux computers.
   • Cloud Station Client for Mac now supports retina icons.
   • Cloud Station Client for DiskStation can now selectively sync data.
3. Cloud Sync
   • Added support for Microsoft OneDrive, Box, and hubiC.
   • You can selectively sync folders.
   • You can filter specific file types, file sizes, and files.
   • Offers bandwidth control.
   • Offers syncing history.
4. Proxy Server
   • Proxy Server provides caching and access control for HTTP-based services. With caching, you can reserve caching storage space on your Synology NAS to store HTTP-based content from the web. You can also use Proxy Server to deny users from accessing restricted web services, keeping your network safe and productive.
5. VPN Server
   • Added IPv6 support for OpenVPN (Requires DSM 5.1).
6. Glacier Backup
   • You can restore data at the file-level instead of whole archives through the new Explore feature.
   • You can now remove a specific file or folder from Amazon Glacier.
   • Added support for file-deduplication within the same backup task, saving your Amazon storage space tremendously.
7. Video Station
   • You can use the new home page to view recently added, released, and watched videos at a glance.
   • In the homepage of TV Recording, streaming online programs and setting recording tasks is now easier and quicker.
   • You can use the real-time filter to find your favorite videos quickly, and save the result as a smart collection.
   • You can view the display in three different modes – Poster, Tile, and List View.
   • You can use the “Watched” status on each video to keep track of videos you have already watched.
   • Retrieve online subtitles when starting to play a movie.
   • You can share a video collection via a sharing link, allowing anyone with the link to play the videos without having a DSM account. The page is optimized for display on desktop and mobile browsers.
   • Video information can be saved as files for data backup.
8. Audio Station
   • You can rate songs in your library and categorize music by rating.
   • You can import rating information from iTunes.
   • Search results will be displayed according to artist, album, and song title.
   • You can share your favorite playlist via a sharing link that is optimized for display on computer and mobile browsers.
   • Added gapless playback support for web streaming (original files only, not including transcoded stream).
   • Added supports for DSD format playback (select models only).
   • Added support for multiple Bluetooth speakers playback.
   • You can individually adjust the volume of multiple players.
9. Photo Station
   • The timeline mode now displays more photos.
   • Various transition effects are offered in Slideshow.
   • You can set your favorite music to play in the background during a slideshow.
   • You can share photos in a virtual collection that is optimized for display on computer and mobile browsers.
   • Added support for sorting photos from oldest to latest in Timeline view.
10. Download Station
    • Redesigned visual style.
    • Added file hosting support for mega.co.nz.
    • You can save up to five different BitTorrent search results.
11. Mail Server
    • Mail Server can scan messages for potentially dangerous content.
    • You can send daily reports about the status of Mail Server. The report will include summaries of hourly traffic, delivered/received messages, deferred/rejected messages, SMTP delivery failures, warnings, and the quantity of senders and recipients.
    • Added support for intermediate certificates.
    • Added advanced anti-spam settings and spam client connection rejection.
    • Added daily sending quota to limit each user's outbound mails.
    • Added mail server settings check to analyze potential weaknesses.
    • Added support for app privilege.
12. PACS
    • PACS is a clinical data management application that can be used to store, access, transfer, and manage medical images and digital reports in DICOM format.
13. Ruby
    • Ruby is an object-oriented open source programming language with a focus on productivity and simplicity.
14. Node.js
    • Node.js is a platform built on Chrome’s JavaScript runtime and is becoming widely popular for developers to build fast and scalable network applications.
15. Python Module
    • Python Module package now provides supplemental extensions for Python 2.7.
16. iTunes Server
    • Album covers are now displayed.

Caveats & Limitations

1. Data Replicator has reached the end of its life span. You are encouraged to use Cloud Station to back up data on your PC or mobile device.

(2014-11-12)

Fixed Issues

1. Enhanced SSL 3.0 handling mechanism for POODLE vulnerability.
2. Implemented fixes to address multiple OpenSSL vulnerabilities (CVE-2014-3513, CVE-2014-3566, CVE-2014-3567, CVE-2014-3568).
3. Fixed a security vulnerability regarding Wget that could allow remote FTP servers to write arbitrary files, and consequently execute arbitrary code (CVE-2014-4877).
4. Improved compatibility with Zoneedit DDNS provider to handle unexpected Javascript execution.

(2014-10-29)

Fixed Issues

1. Fixed an issue where the name of shared folders could be incorrectly displayed, making data inaccessible when connecting via WebDAV protocol.

(2014-10-22)

Fixed Issues

1. Fixed an issue where syncing encrypted shared folders to another Synology NAS could fail.
2. Fixed a vulnerability that could allow servers to accept unauthorized access.
3. Upgraded OpenSSL to Version 1.0.1i to fix multiple security issues (CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, and CVE-2014-5139).
4. Fixed two cURL-related vulnerabilities that could cause IP leaks (CVE-2014-3613 and CVE-2014-3620).
5. Updated PHP 5.5 to address multiple security vulnerabilities (CVE-2014-3538, CVE-2014-3587, CVE-2014-2497, CVE-2014-5120, and CVE-2014-3597).
6. Fixed an issue that could disable File Station Log after system reboots. Users who have enabled File Station Log may still need to manually re-enable this function after upgrading to DSM 5.0-4627, even if it was enabled before the upgrade.
7. Upgraded libgcrypt to 1.5.4 to address an issue that allows remote attackers to extract ElGamal private key information (CVE-2014-5270).

(2014-06-25)

Compatibility and Installation

1. All packages must be updated to be compatible with DSM 5.0.

What's New in DSM 5.0

1. New User Interface

• Visual design has been totally revamped to provide a cleaner look and touch-friendly user experiences.
• High-resolution images are displayed when launched with Ultra HD or retina-display supported devices.
• Badges-style notification counters appear on application icons.

1. QuickConnect

• QuickConnect now supports DSM, Photo Station, Audio Station, Surveillance Station, Download Station, Video Station, File Station, providing simplified remote access, without the hassle of setting up port-forwarding on your router.
• All mobile apps support QuickConnect.
• Enabling QuickConnect requires registering a MyDS Center account.
• Web Station does not support QuickConnect.

1. Backup and Replication

• Multiple version backup is now available to backup to another DiskStation. Only the differential blocks of data are retained among each version, allowing file history to be maintained with better storage efficiency.
• Overview page displays scheduled and completed backup tasks.
• Credentials for creating backup destinations can be saved as a profile to make backup task creation easier.
• Data and configuration backup created in DSM 5.0 can only be restored in DSM 5.0.

1. Control Panel

• Layout has been redesigned for better navigation and organization.
• Service list displays related firewall and port-forwarding settings.
• VPN client settings have been integrated into Network > Network Interface.
• Shortcuts on DSM Desktop that were created previously will be cleared after upgrading to DSM 5.0.

1. Package Center

• Auto updating allows packages to be updated automatically.

1. Log Center

• Syslog Server and System Logs have been integrated into a single, centralized application.

1. Support Center

• Support tickets can now be sent directly from DSM.
• Remote access and log generation allow Synology support engineers to remotely diagnose technical issues on your Synology NAS.

1. File Station

• File sharing links can be created and shared with your Google+ and Facebook friends. Those who receive the link will be asked to enter their Google+ or Facebook login credentials before accessing the folder or file.
• You can view Microsoft Office documents using Office Online when QuickConnect is enabled.

1. Text Editor

• Plain text files can be edited directly in DSM.
• Rich features are available, such as the ability to change character encoding, recognize file types, and see variable highlighting.

1. DSM Help

• Online help files can be viewed in DSM Help, allowing you to read the latest versions of documentation regarding DSM and packages.
• Font size can be changed to larger sizes.

1. Web Station

• Performance has been enhanced with Apache MPM worker.

1. Media Library

• The default indexed folders - photo, video, audio - are removable from indexed folders.
• The types of media to be indexed in each default folder can be changed.

1. SPDY

• Support for SPDY v3.0 accelerates the overall responsiveness of the user interface when using HTTPS connections.

1. Wi-Fi

• Connecting up to two USB Wi-Fi adapters is supported, allowing your Synology NAS to share its Internet connection via both 2.4GHz and 5GHz ranges.
• You can bridge your wired connection with Wi-Fi hotspot(s) to extend your wireless network range and unify your existing local network and the wireless network hosted on your DiskStation.

(2014-11-12)

Fixed Issues

1. Enhanced SSL 3.0 handling mechanism for POODLE vulnerability.
2. Fixed an issue where the passive server, after several abnormal shut-downs, could fail to switch over when the active server is down.
3. Fixed an issue where systems with High Availability enabled could fail to start services after rebooting.
4. Fixed an issue where volumes could crash with SSD read/write cache enabled during volume expansion.
5. Fixed an issue where deletion of an advanced file LUN could not release allocated space.
6. Fixed a security vulnerability regarding Wget that could allow remote FTP servers to write arbitrary files, and consequently execute arbitrary code (CVE-2014-4877).
7. Improved compatibility with Zoneedit DDNS provider to handle unexpected Javascript execution.
8. Implemented fixes to address multiple OpenSSL vulnerabilities (CVE-2014-3513, CVE-2014-3566, CVE-2014-3567, CVE-2014-3568).
9. Improved compatibility with USB drives on certain high-end models.

(2014-10-29)

Fixed Issues

1. Fixed an issue that could cause DSM to become inaccessible after a system upgrade with a certain type of hard drive.
2. Fixed an issue where the name of shared folders could be incorrectly displayed, making data inaccessible when connecting via WebDAV protocol.

(2014-10-28)

What’s New

1. This hotfix includes all bug fixes as well as security fixes in the previously released critical updates since DSM 5.0-4458.
2. This hotfix will remove any current known malware on your Synology NAS.

Fixed Issues

1. Fixed two Linux kernel vulnerabilities that could allow local users to cause a denial of service resulting in uncontrolled recursion or unkillable mount process (CVE-2014-5471 and CVE-2014-5472).
2. Fixed one Linux kernel vulnerability that could allow local users to cause a denial of service or possibly gain privileges via a crafted application that triggers a zero count (CVE-2014-0205).
3. Fixed one Linux kernel vulnerability that could allow man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate (CVE-2014-6657).
4. Fixed one SNMP vulnerability where the improper validation of input could allow remote attackers to cause a denial of service (CVE-2014-2284).
5. Implemented minor fixes related to the ShellShock Bash vulnerabilities previously addressed in DSM 4493-05 updates (CVE-2014-6277, CVE-2014-6278, CVE-2014-7186 and CVE-2014-7187, or as known as Bash 4.2-51, 4.2-52, and 4.2-53 for their Bash Patch-ID).

(2014-09-29)

Fixed Issues

1. Fixed a potential risk on Bash command shell (CVE-2014-6271 and CVE-2014-7169).

(2014-09-29)

Fixed Issues

1. Fixed a potential risk on Bash command shell (CVE-2014-6271 and CVE-2014-7169).

(2014-09-18)

Fixed Issues

1. Fixed an issue where DS414j could fail to start after system upgrade.

(2014-09-10)

Improvement

1. Improve the stability of file copy to encrypted shared folders.

Fixed Issues

1. Fixed a vulnerability that could allow servers to accept unauthorized access.

(2014-08-26)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1i to fix multiple security issues (CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, and CVE-2014-5139).
2. Implemented fixes for Kerberos 5 to address multiple security issues that allow remote attackers to cause a denial of service (CVE-2012-1013, CVE-2014-4341, CVE-2014-4342, CVE-2014-4344).
3. Fixed an issue where files with ACL attributes could become inaccessible after being loaded in large batches when DiskStation acts as an NFS server.
4. Fixed an issue where the restore might not be successful when containing multiple subfolders in Time Backup.
5. Fixed an issue where DHCP server service does not map to the correct VLAN interface if the service started before VLAN is enabled.

(2014-07-24)

Improvements

1. Improved the stability of volume expansion.

Fixed Issues

1. Fixed two SAMBA vulnerabilities which allowed remote attackers to use the weaknesses to perform DoS attacks (CVE-2014-0244, CVE-2014-3493).
2. Fixed an issue which prevented users from being able to log into DSM after completing QuickConnect Wizard after a fresh DSM installation.
3. Fixed an issue causing slow response time in DSM on the early version of RS10613xs+ when too many concurrent connections were active.

(2014-06-27)

Improvements

1. Enabled SSD Read/Write Cache function on RS3614(RP)xs.

Fixed Issues

1. Fixed several issues which occurred when managing EDS14 via CMS service.
2. Fixed an issue that could cause High Availability to be unable to function properly or fail to set up after DSM upgrades.

(2014-06-11)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1h to fix several security issues. (CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-0198, CVE-2010-5298, and CVE-2014-3470)

(2014-06-04)

Change Log

1. After updating to this version, DSM will run data scrubbing on RAID 5 volumes and disk groups that were created in DSM 4.1 or earlier versions to improve the stability of RAID 5 volumes.
2. Fixed an issue where all web pages could display "No input file specified" when the value of "Customize PHP open_basedir" was set to “none” or empty.
3. Enhanced the stability of iSCSI target service.
4. Upgraded PHP to address a security issue that allows remote attackers to cause denial of service attacks to degrade the performance of target servers. (CVE-2014-0237)
5. Fixed an OpenSSL security issue that allows remote attackers to inject data across sessions or cause a denial of service attack via SSL connection in a multi-threaded environment. (CVE-2010-5298)

(2014-04-24)

Compatibility and Installation

1. After installing this version of DSM on DS214play, the device will shut down and then power on automatically after two minutes.

Change Log

1. Added the GeoIP^* feature in Firewall settings, enabling you to allow or block IP addresses from certain countries.
2. Added an option to save files in UTF-8 (with BOM) format in Text Editor.
3. Fixed a security issue of Windows File Service to prevent remote attackers from obtaining access. (CVE-2013-4496)
4. Fixed several security issues related to cURL. (CVE-2014-0139, CVE-2014-0015, CVE-2013-6422)
5. Fixed an issue where CGI programs could not run on Personal websites.
6. Added feature to disconnect user connections to HTTP(S) services after a user's password is changed.
7. Improved the stability of iSCSI target service.
8. Improved the stability of file transfers via Apple File Protocol.

^*This feature includes GeoLite data created by MaxMind, available from http://www.maxmind.com.

(2014-04-10)

Change Log

1. Fixed a critical security issue of OpenSSL (heartbleed) to prevent secret keys from being compromised. (CVE-2014-0160)
2. Enhanced the reliability of moving shared folders to different volumes.
3. Fixed a security issue causing encrypted shared folders to be mounted automatically after resetting the admin's password by pressing the reset button.
4. Fixed an issue causing system services and applications to possibly stop working.
5. Fixed an issue causing files indexing in Media Library to possibly stop working.
6. Fixed an issue preventing users from logging into FTP service when Personal Website was enabled and the homes shared folder was located on an ext3 volume.
7. Fixed an issue causing hard drives to not hibernate when SSD read-write cache was enabled.

(2014-03-26)

Change Log

1. Fixed a security issue to prevent cross-site scripting attacks (XSS).
2. Fixed an issue where encrypted shares could not be mounted on ext3 volumes.
3. Fixed an issue where WMM QoS settings did not take effect normally.
4. Fixed an issue where some USB ports were unusable in certain situations when a USB hub was connected.
5. Fixed several issues related to USB external drives.
6. Enhanced the stability of file transfers.
7. Enhanced the compatibility of Multiple Version Backup when source folder contains device nodes.
8. Enhanced the compatibility of WebDAV when using NetDrive.
9. Changed the error reporting settings of Web Station.

(2014-03-10)

Compatibility and Installation

1. DSM 5.0 will be the last DSM upgrade for all 10-series Synology NAS due to hardware capabilities.
2. All packages must be updated to be compatible with DSM 5.0.
3. The following packages are not available nor compatible with DSM 5.0: Zarafa, DVBLink, and Polkast.
4. DSM 5.0 can only be installed on Synology products running DSM 4.3 or later. Before starting, please log into DSM and go to DSM Update to install the latest DSM.
5. The permissions of “web” shared folder will be changed after it is converted to Windows ACL permissions. Please refer to the Web Station section for details.
6. Some features have certain hardware requirements and are only available on select Synology NAS products.

What's New in DSM 5.0

1. Brand New User Interface

   • Visual design has been totally revamped to provide a cleaner look and touch-friendly user experiences.
   • High-resolution images are displayed when launched with Ultra HD or retina-display supported devices.
   • Badges-style notification counters appear on application icons.
   • Login page displays local weather information.

2. QuickConnect

   • QuickConnect now supports DSM, Photo Station, Audio Station, Surveillance Station, Download Station, Video Station, File Station, providing simplified remote access, without the hassle of setting up port-forwarding on your router.
   • All mobile apps support QuickConnect.
   • Enabling QuickConnect requires registering a MyDS Center account.
   • Web Station and Mail Station does not support QuickConnect.

3. Backup and Replication

   • Multiple version backup is now available on local backup, backup to another DiskStation. Only the differential blocks of data are retained among each version, allowing file history to be maintained with better storage efficiency.
   • Overview page displays scheduled and completed backup tasks.
   • Credentials for creating backup destinations can be saved as a profile to make backup task creation easier.
   • Data and configuration backup created in DSM 5.0 can only be restored in DSM 5.0.
   • Data and configurations that were backed up in DSM 5.0 cannot be restored using DSM 4.3 or earlier.

4. Control Panel

   • Layout has been redesigned for better navigation and organization.
   • Service list displays related firewall and port-forwarding settings.
   • VPN client settings have been integrated into Network > Network Interface.
   • Shortcuts on DSM Desktop that were created previously will be cleared after upgrading to DSM 5.0.

5. Shared Folders with Windows ACL Permissions

   • The access permissions of shared folders are based on Windows ACL, allowing you to fine-tune permissions beyond just Read Only, Read/Write, No Access. Newly created shared folders implement the permission settings of Windows ACL.
   • For shared folders created in DSM 4.3 or earlier, you can either convert the existing permissions to Windows ACL, or leave the permission unchanged.
   • The shared folders - photo, surveillance, and shares on external storage or volume with ext3 file system cannot use Windows ACL permissions.

6. Storage Manager

   • New overview displays the overall health of all disks and volumes, as well as hard disk utilization, volume, and iSCSI LUN usage.
   • Disk health information includes the current and historical health of hard disks

7. SSD Cache

   • Read/Write cache is supported. Two identical SSDs can be combined to create a RAID 1 read-write cache and enhance the performance of a volume or block-level iSCSI LUN.
   • A high-availability cluster cannot be created when SSD read-write cache is enabled.

8. Package Center

   • Auto updating allows packages to be updated automatically.

9. Log Center

   • Syslog Server and System Logs have been integrated into a single, centralized application.

10. Support Center

    • Support tickets can now be sent directly from DSM.
    • Remote access and log generation allow Synology support engineers to remotely diagnose technical issues on your Synology NAS.

11. File Station

    • File sharing links can be created and shared with your Google+ and Facebook friends. Those who receive the link will be asked to enter their Google+ or Facebook login credentials before accessing the folder or file.
    • You can view Microsoft Office documents using Office Online when QuickConnect is enabled.

12. Text Editor

    • Plain text files can be edited directly in DSM.
    • Rich features are available, such as the ability to change character encoding, recognize file types, and see variable highlighting.

13. DSM Help

    • Online help files can be viewed in DSM Help, allowing you to read the latest versions of documentation regarding DSM and packages.
    • Font size can be changed to larger sizes.

14. Web Station

    • The “http” group (http) is the service account for Web Station, introducing better flexibility and security. Web applications will run as the same permission as “http” group. We suggest reviewing the permissions of the web folder and assign appropriate permissions to http group.
    • The PHP version has been updated to 5.5. Please check the compatibility of your PHP-based web apps with php 5.5. The details can be found at Migrating from PHP 5.3.x to PHP 5.4.x and Migrating from PHP 5.4.x to PHP 5.5.x.
    • Performance has been enhanced with Apache MPM worker.

15. Media Library

    • The default indexed folders - photo, video, audio - are removable from indexed folders.
    • The types of media to be indexed in each default folder can be changed.

16. Synology High Availability

    • When binding two or more ethernet connections to create an aggregated heartbeat connection, load balancing and failover are supported.

17. iSCSI Performance

    • For iSCSI LUN with Advanced LUN option enabled, iSCSI random read performance has been enhanced by over 6 times, as illustrated in the below comparison:

    IOPS (4KB)	DSM 4.3	DSM 5.0	Improvement
    Read IOPS from DS1813+	135	995	637 %

    ^*Configured with 4 HDDs composed in SHR-1, the LUN used for testing is a 100G LUN with advanced LUN features enabled. Tested by IOmeter by 100% random read with 4k block size.

18. File Service

    • AFP (Apple Filing Protocol) performance has been improved, as illustrated in the below comparison of transferring 5000 x 1MB files to Synology NAS:

    Mac to Synology NAS	DSM 4.3	DSM 5.0	Improvement
    DS213j	25.14 MB/s	31.42 MB/s	25.0%
    DS1513+	31.64 MB/s	41.61 MB/s	31.5%

19. SPDY

    • Support for SPDY v3.0 accelerates the overall responsiveness of the user interface when using HTTPS connections.

20. Memory Compression

    • Least recently used data in memory is compressed, improving system responsiveness when under heavy load.

21. Wi-Fi

    • Connecting up to two USB Wi-Fi adapters is supported, allowing your Synology NAS to share its Internet connection via both 2.4GHz and 5GHz ranges.
    • You can bridge your wired connection with Wi-Fi hotspot(s) to extend your wireless network range and unify your existing local network and the wireless network hosted on your DiskStation.

22. Snapshot Manager

    • Synology Snapshot Manager software plugin available on vSphere and Windows Server environments to create application-consistent snapshots in DSM.
    • For VMware environments, you can install Synology Snapshot Manager for VMware vCenter Server on Windows Server. After installation, when a snapshot is triggered on DSM, vCenter Server will be notified and flush all the data from memory to the LUN to guarantee data consistency. Once the snapshot is complete, vCenter Server will resume normal I/O operation of VMware datastore.
    • For Windows environment, you can install Synology Snapshot Manager for Windows Server. After installation, when a snapshot is triggered on DSM, Synology Snapshot Manager will use the Microsoft Volume Shadow Copy Service (VSS) technology to produce consistent point-in-time copies of data. Synology Snapshot Manager for Windows Server also supports performing snapshots when triggered by 3rd party software via VSS.
    • Synology Snapshot Manager for VMware vCenter Server supports vSphere 5.1 or later, and vSphere web client server plugin is required for application interface. Snapshot Manager for Windows supports Windows Server 2008 R2, 2012 and 2012 R2. VMWare applications support up to 3 maximum concurrent snapshot tasks.

23. Surveillance Station Max. Camera

    • The maximum number of IP cam has been increased. Please refer to product page for detailed information.

What's New in Mobile Apps

1. DS audio for Android

   • It's now possible to stream to a Chromecast.
   • The lock screen controls now also apply to the remote player.
   • Supports force transcoding of all formats, even those natively supported by Android devices (notably .FLAC).
   • Streaming quality can be adjusted if your Synology NAS supports audio transcoding.

2. DS audio for iPhone/iPad

   • It's now possible to stream to a Chromecast.
   • The lock screen controls now also apply to the remote player.
   • Improved the mini-player design (notably for the portrait mode).
   • Supports force transcoding of all formats, even those natively supported by the iDevice (notably .ALAC)
   • Streaming quality can be adjusted if your Synology NAS supports audio transcoding.

3. DS photo+ for Android

   • Photos can be displayed on Apple TV with AirPlay support.
   • Instant Upload has the option to upload “photos only” (skip videos).
   • Logging in to your Personal Photo Station has been simplified.

4. DS photo+ for iPhone/iPad.

   • Instant Upload has the option to upload “photos only” (skip videos).
   • Logging in to your Personal Photo Station has been simplified.

5. DS photo+ for Windows Phone

   • Smart albums, Tags and Categories created in Photo Station can be viewed.
   • Photos can be displayed on Apple TV.

6. DS file for iPhone/iPad

   • User interface has been redesigned, and overall usability has been improved.
   • Thumbnails are now displayed.

   • The following features require DSM 4.3 or later:

   • Files and folders can now be shared with users without DSM accounts.

   • Advanced search options are now available in addition to local folder search by keyword filtering.
   • Supports compress/extract files as in File Station.

   • Folders can be added to “Favourites” like in File Station.

   • Video playback can now switch to HTTP when using a HTTPS connection. (iOS only)

7. DS file for Windows Phone

   • Image thumbnails are now displayed in list view.

8. DS cloud for Android and iPhone/iPad

   • Folders can be selected on multiple Synology NAS servers.
   • You can view the status of files being synced, such as the progress and sync speed.
   • DS cloud update is required to be compatible with Cloud Station 3 in DSM 5.0.

9. DS download for Android and iPhone/iPad

   • Supports selecting the destination folder for your downloads.

10. New DS download for Windows Phone

    • Monitor Download Station and view download task information.
    • Create tasks using the BT search, embedded Web-browser, or inputting the URL directly.
    • Update RSS feeds.
    • Enable download schedules.
    • Select the destination folder for your downloads.

11. DS video for Android and iPhone/iPad

    • It's now possible to stream to a Chromecast
    • Videos can be downloaded for offline viewing.
    • Quality options are now available when streaming to an Apple TV.

12. DS video for Windows Phone

    • Quality options are now available when streaming to an Apple TV

13. DS video for Samsung TV

    • Browse and stream your video collection with a dedicated app for Samsung TV.
    • Stream Live TV with a DVB-T/DVB-S dongle plugged into your Synology NAS.
    • Option to enable transcoding (on Synology NAS models which support transcoding).
    • Subtitles are supported (.srt support, and embedded subtitles for .mkv).
    • DS video for Samsung TV is available on Samsung Smart Hub for USA market. Manual installation is possible for other countries, please refer to this link.

Known Issue

1. Plex Media Server

   • Users need to manually set read permission for the “plex” user at the User page in Control Panel to allow Plex Media Server to read the shared media folder content.

2. Cloud Sync

3. If a file in Google Drive cannot be transferred within one hour, it has to be re-transferred.

(2014-09-29)

Fixed Issues

1. Fixed a potential risk on Bash command shell (CVE-2014-6271 and CVE-2014-7169).

(2014-09-10)

Fixed Issues

1. Fixed a vulnerability that could allow servers to accept unauthorized access.

(2014-08-26)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1i to fix multiple security issues (CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, and CVE-2014-5139).
2. Implemented fixes for Kerberos 5 to address multiple security issues that allow remote attackers to cause a denial of service (CVE-2012-1013, CVE-2014-4341, CVE-2014-4342, CVE-2014-4344).
3. Updated to the last version of PHP 5.3, announced EOL by the official PHP development team, to address multiple security vulnerabilities (CVE-2014-3981, CVE-2014-3515, CVE-2013-6712, CVE-2014-0207, CVE-2014-0238, CVE-2014-0237, CVE-2014-4049).

(2014-07-24)

Improvements

1. Improved the stability of volume expansion.

(2014-06-25)

Change Log

1. Updated OpenSSL to version 1.0.1h to address several severe security issues. (CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-0198, CVE-2010-5298, and CVE-2014-3470)
2. Fixed a security issue that allows attackers to avoid checking mechanism and execute unintended commands via Web script.

(2014-06-17)

Change Log

1. Fixed an OpenSSL security issue that allows remote attackers to inject data across sessions or cause a denial of service attack via SSL connection in a multi-threaded environment. (CVE-2010-5298)
2. Fixed an issue that caused DSM firewall rules to become ineffective after system upgrade.
3. Fixed several stability issues on DS214play after system migration.

(2014-04-21)

Compatibility and Installation

DSM 4.3-3827 Update 2 can only be installed on Synology products running DSM 4.3-3827 via DSM Update. Please log in to DSM, go to Control Panel > DSM Update, click Update Settings and select Important Updates Only to see and install the update.

Change Log

1. Fixed a critical security issue of OpenSSL (Heartbleed) to prevent secret keys from being compromised. (CVE-2014-0160)
2. Fixed an issue causing the homes shared folder to become inaccessible after being moved to another volume.
3. Fixed an issue allowing the basic information of Synology NAS devices to be obtained outside of the local network without authentication.
4. Fixed password recovery e-mail to include the correct port number even when launched in Application Portal with customized ports.

(2014-03-18)

Change Log

1. Fixed a security issue related to OpenSSL (CVE-2013-4353).
2. Fixed security issues by upgrading PHP to version 5.3.28 (CVE-2013-4073, CVE-2013-6420).
3. Fixed a security issue to prevent malicious attacks via NTP service (CVE-2013-5211).
4. Fixed an issue where encrypted shared folders on ext3 volumes could not be mounted.
5. Fixed an issue where Microsoft IIS (Internet Information Services) servers could not list files in shared folders on the DiskStation via SMB.
6. Fixed an issue where files could not be listed using command line after SMB signing was enabled.
7. Fixed an issue where data might not be correctly written to a degraded RAID 5 volume. (Applied to: DS213+, DS413, DS213, DS413j, DS213air, DS213j, DS212, DS212+, DS212j, RS212, RS812, DS112j, DS112, DS112+, RS411, DS411, DS411j, DS411slim, DS211+, DS211, DS211j, DS111, DS410, DS410j, DS210+, DS210j, DS110+, DS110j)
8. Fixed an issue where shutting down or rebooting the DiskStation would fail when DDoS protection was enabled.
9. Improved system stability when transferring files under heavy workloads.

(2014-02-14)

Change Log

1. This update repairs the system and removes malware caused by past system vulnerabilities (CVE-2013-6955, CVE-2013-6987).
2. The compatibility of SMB 2 file service has been enhanced when transferring files to Mac OS X 10.9.
3. Fixed an issue where SFTP service would consume excessive memory when it was enabled.
4. Enhanced the reliability of QuickConnect and Push Service notifications.

(2014-01-09)

Compatibility and Installation

1. DSM 4.3-3810 Update 4 can only be installed on Synology products running DSM 4.3-3810 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Improvements

1. Enhanced the security of Windows File Services (SMB) to prevent unauthorized access. (CVE-2013-4408, CVE-2012-6150)
2. Enhanced the compatibility of File Station with Internet Explorer 11.

Fixed Issues

1. Data that was read from a volume would be incorrect when a crashed SSD cache was mounted on that volume.
2. SNMP service would consume excessive memory when it was enabled.
3. Synology NAS could not shut down or reboot when DoS protection was enabled.

(2013-12-19)

Compatibility and Installation

1. DSM 4.3-3810 Update 3 can only be installed on Synology products running DSM 4.3-3810 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Change Log

1. Enhanced system security to prevent unauthorized access via File Station, Windows File Service (SMB), WebDAV, DSM from HTTP and telnet.(CVE-2013-4475, CVE-2013-6987)
2. Fixed an issue where backup tasks might be deleted when the external drive was ejected, if the external drive was selected as the backup destination.

(2013-12-05)

Compatibility and Installation

1. DSM 4.3-3810 Update 2 can only be installed on Synology products running DSM 4.3-3810 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

1. Fixed an issue where the system partition will probably have insufficient free space if logs of Windows File Service is enabled.
2. Fixed an issue where the system partition of DS213+ and DS413 will probably have insufficient free space in some network environments.
3. Enhanced the stability of DS213+ and DS413 when they are connected with Synology expansion units.
4. Enhanced the overall stability of DSM.

(2013-11-20)

Compatibility and Installation

1. DSM 4.3-3810 Update 1 can only be installed on Synology products running DSM 4.3-3810 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

1. Fixed a system security issue to prevent unauthorized access via File Station. (CVE-2013-6955)
2. Fixed a system security issue of Auto Block to prevent IP addresses from being improperly added to the Block List.
3. Improved the compatibility of file uploading with Internet Explorer 11 in File Station.

(2013-11-07)

Fixed Issues

1. Enhanced the compatibility of SMB 2 with Mac OS X 10.9.
2. Enhanced the compatibility of File Station with Internet Explorer 11.
3. Added an option that allows the domain to be changed in NFS v4 settings.

(2013-09-17)

Compatibility and Installation

1. DSM 4.3 can only be installed on Synology products running DSM 4.0 or later. Before starting, please log into DSM and go to Control Panel > DSM Update to install the latest available update.
2. The following packages must be updated to be compatible with DSM 4.3: Photo Station, Audio Station, Video Station, and Media Server, AntiVirus by McAfee, Antivirus Essential.
3. Some features have special hardware requirements and are only available on select models.

What's New

1. Windows Offloaded Data Transfer (ODX) Support

• Offloaded Data Transfer (ODX) introduces an efficient way to move data between a data source and destination by offloading the I/O burden to your storage device, thus saving network bandwidth, computation power on the host, and improving performance at same time.
• The data source and destination can be on the same LUN, two different LUNs hosted on the same Synology NAS, or two LUNs on two different Synology NAS.
• If the data source and destination are located on LUNs located on the same volume, cloning will be processed by Synology Advanced LUN technology which saves up to 99.9% of the storage space consumption and accelerates cloning at the same time. To leverage Synology Advanced LUN technology for cloning on ODX, you are suggested to format the NTFS volume with 8K or above cluster size.
• To use ODX, the computer initiating the data transfer must be running Windows 8 or Windows Server 2012 and the type of iSCSI LUN has to be file-based iSCSI LUN with Synology Advanced LUN technology option enabled.

1. SSD TRIM Support

• SSD TRIM can prevent the performance degradation therefore improves the read and write performance of volumes created on SSDs, increasing efficiency as well as extending the lifetime of your SSDs. See the list below for verified SSD with TRIM support.
• You may customize a schedule to choose when the system will perform TRIM.
• SSD TRIM is not available when an SHA cluster exists.
• TRIM cannot be enabled on iSCSI LUN.

1. SSD Cache

• SSDs installed in any HDD slots can be mounted as cache to accelerate the performance of multiple volumes or LUNs.

1. Trust Domain Support in Active Directory

• Users and groups belonging to trusted domains can be assigned privileges to access files or run applications after your DiskStation joins a Windows domain.
• You can specify how often the DiskStation automatically updates the domain user/group list.

1. Broader LDAP Client Support

• Your DiskStation can now join an LDAP domain hosted by IBM Domino LDAP Server 8.5.
• If you use a different LDAP server with different attributes for account names and group names, there are now options to specify or customize how user and group information is mapped to LDAP attributes.

1. NFS

• NFS v4 support has been added, including pseudo file system and a stateful protocol.
• NFS v3 and v4 now support IPv6.
• NFS v3 and v4 security have been enhanced with Kerberos protocol, introducing three levels of security service: authentication, integrity (prevents tampering with NFS payload), and privacy (protects the content of NFS traffic from eavesdropping).
• If Kerberos security flavor is implemented, you can map the NFS client to a local user, a domain user or a LDAP user.
• Additional NFS settings have been added for NFS v3 and NFS v4, such as default read and write packet size, or allow clients to access NFS servers with insecure, non-privileged ports.

1. Speed Limit Scheduler

• Bandwidth speed limits can now be configured according to a schedule, so speed limits will take effect at specific times only.
• Varying speed limits can be customized for each user and group, allowing you to implement different limits at different times.

1. Task Scheduler

• When creating tasks to automatically empty recycle bins, you can now define a retention policy to control what files are permanently deleted according to time, size, or file types.

1. Self-service Password Recovery

• System admins can allow DSM local users (and LDAP users on Synology Directory Server) to conveniently reset passwords via email.

1. HFS+ Support

• HFS+ External drives are supported in DSM 4.3.
• Read/Write is supported.
• Read only is supported and the maximum volume size is 2TB.
• HFS+ journal is not supported.

1. File Station

• You can now create links to share folders with non-DSM users.
• Users allowed to create sharing links can now be specified.
• The size of thumbnails can be changed.
• You can drag-n-drop files or folder to your desktop to download them easily. Supports Google Chrome browser only.
• Enhanced the compatibility of mounting a share located on a Mac OS 10.7 (or later) via SMB file service.

1. Advance Options for Windows File Service (SMB)

• The following advance options for Windows File Service (SMB) have been added: DirSort VFS module; Veto files (hide files according to specified criteria); symbolic links and wide links; MSDFS VFS module (allowing symbolic links to point to files or folders located on another server); save debug logs; and clear SMB cache files.

1. Package Center

• A default volume on which packages being installed can be specified, simplifying package installation.

1. Disk Usage Report

• You can easily remove duplicated files in the disk usage report.

1. 3G/4G USB Dongle Support

• A 3G/4G USB dongle can be plugged into your NAS, allowing it to connect to a mobile network. On DS213air or DiskStations with Wi-Fi dongle, you can share your 3G/4G Internet access with tablets and laptops wirelessly.
• See the link for supported 3G/4G USB dongles.

1. Wi-Fi Hotspot Enhancements

• Time-based Parental Control: Allows you to control when each client device connected to the DiskStation's local network can access the Internet. The feature are available on DS213air only.
• UPnP Internet Gateway: Enable UPnP service to allow your DiskStation to become a UPnP Internet Gateway device, so that devices that are connected to the local network of the DiskStation can configure port forwarding settings with UPnP. For DS213air or other drives with USB Wi-Fi adapter plugged only.
• PPPoE Relay: Allows devices that are connected to the DiskStation to connect to the Internet via PPPoE connection. For DS213air or other devices with USB Wi-Fi adapters only.

1. DSM Update

• You can change DSM update settings to always install the latest version of DSM and critical updates, or install critical updates only.

1. File System Check (FSCK) utility has been added.
2. Built-in VPN client now supports L2TP over IPSec connection.
3. FTP

• ASCII support: Allows the DiskStation to properly transfer ASCII formatted plain text files via FTP.

1. Misc.

• S3 Network Backup supports multipart data upload.
• PHP has been upgraded to 5.3.27.
• Additional Security options to enhance the system's protection against cross-site request forgery attacks.

What’s New in Mobile Apps (Coming Soon)

1. DS download for iPhone/iPad & Android phones

• Search torrents by keywords and download them directly to the DiskStation.

1. DS video for iPhone/iPad, Android & Windows Phones

• Recordings can now be created by specifying the start time and the duration.

1. DS audio for iPhone/iPad

• New theme and sliding menus.
• Displays the album covers when browsing.
• Complete playlist management, allowing you to create, edit and delete playlists.
• “By Composer” now added to browse your library.
• Full screen player for iPad version
• Gapless playback when streaming to the iPhone/iPad.
• Airplay device password protection is now supported in DS audio.

1. DS photo+ for iPhone/iPad

• New interface with sliding menus.
• Browse any Smart albums, Tags, as well as Categories you have created in Photo Station.
• Displays sub-album names in thumbnail mode.

1. DS photo+ for Android and Google TV

• Virtual albums support: Smart albums, Tags and Categories can be browsed.

1. DS audio for Android

• Offline playback allows you to download music to your device.
• Displays the album covers when browsing.
• Complete playlist management, allowing you to create, edit and delete playlists.
• “By Composer” has been now added to browse your library.
• Gapless playback in streaming mode to the Android device.

1. DS cam for Android

• Updated theme and Android 4.0 UI design style.
• Supports better streaming quality for cameras with H. 264 output
• Select cameras to customize Multi live views (by camera group or by DiskStation)
• Enable / disable IP cameras.
• View key camera information.
• Digital zoom in / out on PT cameras.
• Support for audio streams.

1. DS cloud for Android

• Allows you to select a specific folder on the Android device to sync data.

1. DS file for Windows Phone

• DS file for Windows Phone allows you to browse and manage files stored on your DiskStation, as well as upload photos from the Camera roll directly to the DiskStation.
• You can create sharing file links, protecting them with a password and an expiration date, compressing and extracting files on your DiskStation, or adding folders you access most often to your “Favourites” list.
• You have to upgrade your DiskStation to DSM 4.3 to run this app.

1. DS video for ROKU

• DS video lets you access Video Station on your Synology NAS server, to watch videos, record digital TV programs, or simply stream them live. Categorize your videos with either default or custom libraries and create your own video collection lists for quick access.
• You have to upgrade Video Station to 1.2 to have all features of DS video.

(2013-10-15)

Compatibility and Installation

1. DSM 4.3-3776 Update 3 can only be installed on Synology products running DSM 4.3-3776 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

1. Enhanced the security while logging in to DSM via telnet.
2. Enhanced CalDAV compatibility with Calendar in iOS7.
3. Enhanced the stability for ODX transferring.
4. Enhanced the security of DSM operating system. (CVE-2013-2174, CVE-2013-1944, CVE-2012-4929)
5. Optimized CPU usage when multiple HTTP connections are established to the same Synology NAS.
6. Fixed an issue where downloading a whole folder may fail in Internet Explorer.
7. Fixed an issue where the banner of Photo Viewer and Video Viewer may be hidden if Remove Banner in Control Panel > Application Portal > Options is selected.
8. Fixed an issue where Synology NAS may not be able to hibernate when Audio Station is running.
9. All the fixes that have been delivered in DSM 4.3-3776 Update 1 and Update 2 are included in this update.

(2013-09-26)

Compatibility and Installation

1. DSM 4.3-3776 Update 2 can only be installed on Synology products running DSM 4.3-3776 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

1. Enhanced the security of DSM operating system.
2. Fixed an issue where thumbnails may not be generated correctly.
3. All of the fixes that have been delivered in DSM 4.3-3776 Update 1 are included in this update.

(2013-09-17)

Compatibility and Installation

1. DSM 4.3-3776-1 can only be installed on Synology products running DSM 4.3-3776 via DSM Update. Please log in to DSM and go to Control Panel > DSM Update to install the update.

Fixed Issues

1. Enhanced the stability of iSCSI LUN and volumes.
2. Enhanced the security of DSM operating system.
3. Resolved a compatibility issue so that you can install Photo Station 5 on DSM 4.3.

(2013-08-27)

Compatibility and Installation

1. DSM 4.3 can only be installed on Synology products running DSM 4.0 or later. Before starting, please log into DSM and go to Control Panel > DSM Update to install the latest available update.
2. The following packages must be updated to be compatible with DSM 4.3: Photo Station, Audio Station, Video Station, and Media Server, AntiVirus by McAfee, Antivirus Essential.
3. Some features have special hardware requirements and are only available on select models.

What's New

1. Trust Domain Support in Active Directory

   • Users and groups belonging to trusted domains can be assigned privileges to access files or run applications after your DiskStation joins a Windows domain.
   • You can specify how often the DiskStation automatically updates the domain user/group list.

2. Broader LDAP Client Support

   • Your DiskStation can now join an LDAP domain hosted by IBM Domino LDAP Server 8.5.
   • If you use a different LDAP server with different attributes for account names and group names, there are now options to specify or customize how user and group information is mapped to LDAP attributes.

3. NFS

   • NFS v4 support has been added, including pseudo file system and a stateful protocol.
   • NFS v3 and v4 now support IPv6.
   • If Kerberos security flavor is implemented, you can map the NFS client to a local user, a domain user or a LDAP user.
   • Additional NFS settings have been added for NFS v3 and NFS v4, such as default read and write packet size, or allow clients to access NFS servers with insecure, non-privileged ports.

4. Speed Limit Scheduler

   • Bandwidth speed limits can now be configured according to a schedule, so speed limits will take effect at specific times only.
   • Varying speed limits can be customized for each user and group, allowing you to implement different limits at different times.

5. Task Scheduler

   • When creating tasks to automatically empty recycle bins, you can now define a retention policy to control what files are permanently deleted according to time, size, or file types.

6. Self-service Password Recovery

   • System admins can allow DSM local users (and LDAP users on Synology Directory Server) to conveniently reset passwords via email.

7. HFS+ Support

   • HFS+ External drives are supported in DSM 4.3.
   • Read only is supported and the maximum volume size is 2TB.
   • HFS+ journal is not supported.

8. File Station

   • You can now create links to share folders with non-DSM users.
   • Users allowed to create sharing links can now be specified.
   • The size of thumbnails can be changed.
   • You can drag-n-drop files or folder to your desktop to download them easily. Supports Google Chrome browser only.

9. Advance Options for Windows File Service (SMB)

   • The following advance options for Windows File Service (SMB) have been added: DirSort VFS module; Veto files (hide files according to specified criteria); symbolic links and wide links; MSDFS VFS module (allowing symbolic links to point to files or folders located on another server); save debug logs; and clear SMB cache files.

10. Package Center

    • A default volume on which packages being installed can be specified, simplifying package installation.

11. Disk Usage Report

    • You can easily remove duplicated files in the disk usage report.

12. 3G/4G USB Dongle Support

    • A 3G/4G USB dongle can be plugged into your NAS, allowing it to connect to a mobile network. On DS213air or DiskStations with Wi-Fi dongle, you can share your 3G/4G Internet access with tablets and laptops wirelessly.
    • See the link for supported 3G/4G USB dongles.

13. Wi-Fi Hotspot Enhancements

    • Time-based Parental Control: Allows you to control when each client device connected to the DiskStation's local network can access the Internet. The feature are available on DS213air only.
    • UPnP Internet Gateway: Enable UPnP service to allow your DiskStation to become a UPnP Internet Gateway device, so that devices that are connected to the local network of the DiskStation can configure port forwarding settings with UPnP. For DS213air or other drives with USB Wi-Fi adapter plugged only.
    • PPPoE Relay: Allows devices that are connected to the DiskStation to connect to the Internet via PPPoE connection. For DS213air or other devices with USB Wi-Fi adapters only.

14. DSM Update

    • You can change DSM update settings to always install the latest version of DSM and critical updates, or install critical updates only.

15. File System Check (FSCK) utility has been added.

16. Built-in VPN client now supports L2TP over IPSec connection.

17. FTP

    • ASCII support: Allows the DiskStation to properly transfer ASCII formatted plain text files via FTP.

18. Misc.

    • S3 Network Backup supports multipart data upload.
    • PHP has been upgraded to 5.3.27.
    • Additional Security options to enhance the system's protection against cross-site request forgery attacks.

What’s New in Mobile Apps (Coming Soon)

1. DS download for iPhone/iPad & Android phones

   • Search torrents by keywords and download them directly to the DiskStation.

2. DS video for iPhone/iPad, Android & Windows Phones

   • Recordings can now be created by specifying the start time and the duration.

3. DS audio for iPhone/iPad

   • New theme and sliding menus.
   • Displays the album covers when browsing.
   • Complete playlist management, allowing you to create, edit and delete playlists.
   • “By Composer” now added to browse your library.
   • Full screen player for iPad version
   • Gapless playback when streaming to the iPhone/iPad.
   • Airplay device password protection is now supported in DS audio.

4. DS photo+ for iPhone/iPad

   • New interface with sliding menus.
   • Browse any Smart albums, Tags, as well as Categories you have created in Photo Station.
   • Displays sub-album names in thumbnail mode.

5. DS photo+ for Android and Google TV

   • Virtual albums support: Smart albums, Tags and Categories can be browsed.

6. DS audio for Android

   • Offline playback allows you to download music to your device.
   • Displays the album covers when browsing.
   • Complete playlist management, allowing you to create, edit and delete playlists.
   • “By Composer” has been now added to browse your library.
   • Gapless playback in streaming mode to the Android device.

7. DS cam for Android

   • Updated theme and Android 4.0 UI design style.
   • Supports better streaming quality for cameras with H. 264 output
   • Select cameras to customize Multi live views (by camera group or by DiskStation)
   • Enable / disable IP cameras.
   • View key camera information.
   • Digital zoom in / out on PT cameras.
   • Support for audio streams.

8. DS cloud for Android

   • Allows you to select a specific folder on the Android device to sync data.

9. DS file for Windows Phone

   • DS file for Windows Phone allows you to browse and manage files stored on your DiskStation, as well as upload photos from the Camera roll directly to the DiskStation.
   • You can create sharing file links, protecting them with a password and an expiration date, compressing and extracting files on your DiskStation, or adding folders you access most often to your “Favourites” list.
   • You have to upgrade your DiskStation to DSM 4.3 to run this app.

10. DS video for ROKU

    • DS video lets you access Video Station on your Synology NAS server, to watch videos, record digital TV programs, or simply stream them live. Categorize your videos with either default or custom libraries and create your own video collection lists for quick access.
    • You have to upgrade Video Station to 1.2 to have all features of DS video.

(2017-06-21)

Important Note

1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
2. This update will restart your Synology NAS.

Fixed Issues

1. Fixed a security vulnerability regarding samba service (CVE-2017-7494).
2. Fixed several security vulnerabilities regarding ImageMagick (CVE-2016-3714, CVE-2016-3715, CVE-2016-3716, CVE-2016-3717, CVE-2016-3718).
3. Fixed an issue where applications might fail to save files on macOS 10.12.x via AFP.

(2016-05-06)

1. Fixed multiple vulnerabilities regarding Samba module (CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2115, CVE-2016-2118).

(2015-05-19)

Fixed Issues

1. Fixed a vulnerability that could allow unauthorized access to the shared folders via SMB protocol.
2. Minor bug fixes

(2015-03-25)

Fixed Issues

1. Enhanced SSL 3.0 handling mechanism for POODLE vulnerability.
2. Upgraded OpenSSL to 1.0.1m to address multiple vulnerabilities (CVE-2014-3571, CVE-2015-0206, CVE-2014-3569, CVE-2014-3572, CVE-2015-0205, CVE-2014-8275, CVE-2014-3570, CVE-2015-0204, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0292, CVE-2015-0293, CVE-2015-0209, and CVE-2015-0288).
3. Enhanced the stability when repairing degraded RAID.
4. Fixed a security vulnerability related to SAMBA (CVE-2015-0240).

(2014-09-10)

Fixed Issues

1. Fixed a vulnerability that could allow servers to accept unauthorized access.

(2014-08-26)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1i to fix multiple security issues (CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, and CVE-2014-5139).
2. Implemented fixes for Kerberos 5 to address multiple security issues that allow remote attackers to cause denial of service (CVE-2012-1013, CVE-2014-4341, CVE-2014-4342, CVE-2014-4344).
3. Updated to the last version of PHP 5.3, announced EOL by the official PHP development team, to address multiple security vulnerabilities (CVE-2014-3981, CVE-2014-3515, CVE-2013-6712, CVE-2014-0207, CVE-2014-0238, CVE-2014-0237, CVE-2014-4049).
4. Minor bugs fixes.

(2014-07-17)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1h to fix several security issues (CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-0198, CVE-2010-5298, and CVE-2014-3470).
2. Minor bugs fixed.

(2014-04-15)

Fixed Issues

1. Fixed a critical security issue of OpenSSL (heartbleed) to prevent secret keys from being compromised. (CVE-2014-0160)

(2014-03-20)

Fixed Issues

1. Fixed a security issue related to OpenSSL (CVE-2013-4353).
2. Fixed security issues by upgrading PHP to version 5.3.28 (CVE-2013-4073, CVE-2013-6420).
3. Fixed a security issue to prevent malicious attacks via NTP service (CVE-2013-5211).
4. Fixed a security issue of Windows File Services (SMB) to prevent unauthorized access. (CVE-2013-4408, CVE-2012-6150)
5. Fixed an issue where CalDAV clients cannot receive data from CalDAV server.
6. Fixed an issue where data might not be correctly written to a degraded RAID 5 volume.

(2014-02-17)

Change Log

1. This update is required to continue using QuickConnect & Push Service notifications.
2. Fixed an issue causing HDD Hibernation to not work.
3. Fixed an issue where SFTP service would consume excessive memory when it was enabled.

(2013-11-14)

Fixed Issues

1. Enhanced CalDAV compatibility with Calendar in iOS7.
2. Enhanced the overall security of DSM.

(2013-08-08)

Change log

1. Fixed an issue where memory size was displayed incorrectly.

(2013-05-28)

Change log

1. Fixed an issue that system doesn’t restart after DSM upgrade.
2. Improved system performance when expanding memory to 4GB.
3. Updated fan behavior.

(2013-04-18)

What's New

1. Fixed an issue where users could not connect to the DiskStation via FTP over SSL.
2. Fixed an issue which kept the DiskStation from connecting to SNMP (Simple Network Management Protocol) UPS devices.
3. Fixed an issue where domain users could not obtain an emergency code for 2-step verification.
4. Improved the compatibility of file sharing via SMB/CIFS with Mac computers.
5. Improved the stability of generating Disk Usage Reports.
6. Improved the stability of iSCSI LUN.
7. Improved the compatibility when backing up data between different versions of DSM.
8. Improved stability when syncing files between two DiskStations with Shared Folder Sync.
9. Improved the stability when backing up data to another DiskStation with Time Backup.
10. Other issue fixes and enhancements.

(2013-03-04)

Compatibility and Installation

1. DSM 4.2 will be the last DSM upgrade for all 9-series Synology NAS due to hardware capabilities.
2. DSM 4.2 can only be installed on Synology products running DSM 4.0 or later. Before starting, please log into DSM and go to Control Panel > DSM Update to install the latest available update.
3. The following packages must be updated to be compatible with DSM 4.2: VPN server, Mail Server, Mail Station, Video Station, Time Backup, Logitech Media Server.
4. Some features have special hardware requirements and are only available on select models.

What's New

1. Storage Manager

   • Global Hot Spare Disks -- Hard disks can now be designated as hot spare disks, which can repair degraded volumes/Disk Groups/iSCSI LUNs by automatically replacing a failed disk.
   • S.M.A.R.T. Test Scheduler -- You can now perform S.M.A.R.T. tests according to your individual schedule. For example, S.M.A.R.T.tests can be scheduled to run monthly or automatically test all of the disks in your DiskStation.

2. File Services for Windows, Mac OS, and Linux

   • SMB2 Protocol Support for Windows File Service -- SMB 2 protocol has general improvements to allow for better network utilization.
   • Large MTU Support for SMB2. The Large MTU (maximum transmission unit) option allows users to utilize the network capabilities better and achieve faster transferring speed. You can enable this option through a registry key on Windows computers.
   • AFP (Apple File Protocol) Performance Enhancements -- The speed of file transfers to the DiskStation has improved up to 52%. The following is a comparison between DSM 4.1 and DSM 4.2.

   	DSM 4.1	DSM 4.2	Improvement
   DS212+	45.2 MB/s	68.6 MB/s	51.6%

   • Network Backup, rsync, and Shared Folder sync -- The performance of these feature has been generally improved when transferring large numbers of folders and files. The following is a comparison between DSM 4.1 and DSM 4.2.

   	DSM 4.1	DSM 4.2	Improvement
   Backup 5000x 1MB files in 1110 folders from DS213+ to DS212	32.8 sec	14.55 sec	2x

   The time used to run the backup task for the second time.

3. File Station

   • Single Page of Files -- You can now browse up to 1000 files on one single page.
   • Thumbnail View -- Files and pictures can be displayed as large icons or thumbnails of pictures, if available.
   • Hotkeys -- The following keyboard shortcuts have been added in order to simplify file management: Select All (Ctrl + A), Cut (Ctrl + X) , Copy (Ctrl + C), Paste (Ctrl + V), Delete (Delete), Rename (F2).

4. TFTP & PXE

   • TFTP & PXE -- You can now set up your DiskStation as a TFTP server, allowing clients to retrieve system boot images via TFTP and implement Pre-Boot Execution Environment (PXE).

5. Package Center

   • New Design for App Discovery -- You can now browse packages by categories or search for specific packages. Screenshots are included to give you a preview of the app before installing them.
   • Transaction Platform -- Paid and trial versions of packages are available in the new Package Center. Please note, you will need a MyDS Center account in order to purchase paid apps.
   • Integrated with MyDS Center Account -- You can now review your purchase history on the MyDS Center website.

6. 2-step Verification & Account Activity

   • 2-step Verification-- This feature adds an extra layer of security to your DSM account. Once 2-step verification is enabled, anyone trying to access your account will need a one-time 6-digit code displayed on your smartphone, in addition to your DSM password.
   • Account Activity -- This feature lets you view your current login session and login history.

7. Firewall & Security

   • Denial of Service (DoS) Protection -- This option allows you to filter out malicious traffic without interrupting safe traffic.
   • Customized Block & Allow IP List for Auto Block -- You can now manually add IP addresses to your Block and Allow lists to protect your network.

8. LDAP/AD Accounts

   • More Apps for Enterprise Users -- Enterprise users can now enjoy more features of DSM with LDAP or AD accounts. Supported packages includes Cloud Station, Audio Station, Video Station, Mail Server, and Mail Station.

9. Task Scheduler

   • Automate Tasks -- Task Scheduler allows you to schedule and run tasks at pre-defined times. Tasks include running user-defined scripts, cleaning the Recycle Bin on a regular basis, and starting and stopping services, among others.

10. Disk Usage Report

    • Easily Monitor Storage Usage -- The disk usage report feature displays the following information: the outstanding storage usage of users, the status of volume usage, trends based on past usage, the percentage of disk space that each file type occupies, the size of shared folders, and the largest, most, least frequently modified files.
    • Schedule Report -- You can schedule periodic reports or perform analyses immediately.

11. Bluetooth Support

    • Stream music with Bluetooth -- You can to connect multiple USB Bluetooth adapters to your DiskStation and connect to A2DP Bluetooth devices, such as speakers or headphones in order to easily stream music stored on your DiskStation.

12. DDNS

    • Support for Multiple DDNS Hosts-- More than one DDNS provider can now be set up and saved at the same time.
    • Supports Chinese domain names provided by Oray DDNS.

13. QuickConnect

    • More Mobile Support -- QuickConnect now supports more mobile apps, including DS photo+, DS audio, and DS cloud.

14. Power, Devices and Printers

    • Network UPS Support -- DiskStation now supports connecting to SNMP (Simple Network Management Protocol) UPS devices or network management cards, allowing your DiskStation to enter safe mode based on the status of your network UPS.
    • Network Printer Support -- DSM now supports LPR, IPP, Socket, and BJNP network printers and can share them over the network via AirPrint, Cloud Print, LPR, CIFS, IPP protocols. Windows users can set up network printers shared by DiskStation with Synology Assistant.

15. Wi-Fi Connectivity Enhancements

    • WPA2 Enterprise -- If your DiskStation has a USB Wi-Fi adapter installed or built-in, you can join a wireless network with WPA2 Enterprise security.

16. The desktop version of DSM on touch-enabled devices has been enhanced to support more touch events for Safari on iPhone, iPad and Chrome on Android devices.š

    • Application windows can be auto-maximized and auto-centered.
    • Users can use 3-finger gestures to switch between applications.
    • Users can long-press on items to right-click.
    • Supports double tapping items.

17. Certificate Management

    • Certificate management allows you to create a self-signed certificate or a certificate request, or import certificates to DSM for encrypted services, such as web (HTTPS), FTP, RADIUS server, and mail services.
    • You can view info regarding your server certificate, including expiration date, issuer, and subject (common name) in Control Panel > DSM Settings.

18. Misc.

    • Apache has been upgraded to 2.2.23.
    • PHP has been upgraded to 5.3.21.
    • Perl is now a standalone package.
    • If you enable SSH service and open its port (22) to the Internet, you may notice many attempts to access your DiskStation in System Logs, because SSH connections are now recorded in DSM 4.2. To protect your DiskStation, we suggest configuring Firewall settings to allow only select IP addresses to access your DiskStation via SSH.
    • Supports an alternative DNS server in network settings
    • You can discover your Synology NAS with SSDP (Simple Service Discovery Protocol) before DSM is installed if the Synology NAS has been installed DSM 4.2 once.

(2012-12-18)

Change log:

1. Fixed an issue where you may not see the files via Windows File Service (CIFS protocol) after you rename them.
2. Fixed an issue where you may not be able to delete files via Windows File Service.
3. Fixed an issue where the DiskStation may not enter safe mode when a power outage occurs.
4. Improved overall reliability of Windows File Service.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-12-03)

Change log

1. Added File Access Statistics function to SSD cache which allows you to calculate and view the total size and number of recently accessed files on a specific volume. This information can be referenced when evaluating how much SSD cache is suitable for your system.
2. Minor bug fixes.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-11-13)

Change log

1. Minor bug fixes.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-12-18)

Change log:

1. Fixed an issue where you may not see the files via Windows File Service (CIFS protocol) after you rename them.
2. Fixed an issue where you may not be able to delete files via Windows File Service.
3. Fixed an issue where the DiskStation may not enter safe mode when a power outage occurs.
4. Improved overall reliability of Windows File Service.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-11-15)

Change log:

1. Fixed an issue where files in the encrypted shared folders were case-sensitive.
2. Fixed an issue where file transmission over HTTPS was slow.
3. Fixed an issue where the system time of DiskStation was inaccurate.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-11-08)

Change log:

1. Improved compatibility of USB 3.0 ports and peripheral devices.
2. Fixed an issue where files in the encrypted shared folders were case-sensitive.
3. Fixed an issue where file transmission over HTTPS was slow.
4. Fixed an issue where the system time of DiskStation was inaccurate.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-10-18)

Change log

1. Enhanced iSCSI target stability when adjusting network MTU configurations.
2. Fixed an issue the data volume was falsely reported as being crashed after waking up from system hibernation.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-10-02)

Change log:

1. Fixed an issue where the folder and file names were case-sensitive when you access them via Windows File Sharing.
2. Fixed an issue where full backup was performed when it should be incremental backup. Amazon S3 users should apply this update to reduce the amount of data transmission.
3. Improved the NFS performance when mounted to VMware ESXi 5.1 servers.
4. Improved the AirPrint compatibility with iOS 6 devices.
5. Improved the compatibility with Internet Explorer 10.
6. Other fixes.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-08-31)

• DSM 4.1 can only be applied to Synology NAS with DSM 4.0 and onward. Download DSM 4.0 at: Americas, Asia, Europe, Hong Kong
• Due to the hardware capability, not all of the features of DSM 4.1 are available to all models; please see below for more information. If you would like to experience the full potential of DSM 4.1 or the future release of the DSM operating system, please consider upgrading the Synology NAS to a new one.

New Feature Highlights

1. Firewall with Traffic Control:

   • The Traffic Control allows you to reserve, limit, or prioritize the bandwidth usage for difference services to help you manage your bandwidth resource effectively.
   • The maximum bandwidth for each network port or port range can be set up within the built-in Firewall.

2. Speed Limit:

   • In FTP, File Station,WebDAV and Network Backup settings, you can set the bandwidth for selected users, groups, to limit speed of a single user, or the total bandwidth usage for a group.
   • Speed limit is supported on domain users and groups including LDAP domain or Windows AD.
   • The file transfer sessions with speed limit can be viewed in System Information.

3. FTP Server:

   • SFTP server is supported to meet the enterprise security standard.
   • SFTP server port number can be either specified or the same port as SSH.
   • FTPS service supports FIPS by using OpenSSL FIPS 140-2 validated cryptography module.
   • FXP is supported, enabling users to exchange files between two FTP servers directly.

4. Windows File Service Update:

   • Samba is now upgraded to 3.6 with the version of SMB protocol SMB1.
   • The authentication security is enhanced with NTLMv2 and updated Kerberos v5 support.

5. Recycle Bin on all file protocols:

   • Recycle Bin now works in Windows File Sharing (CIFS), File Station, FTP, AFP and WebDAV. In case that you have accidently removed important files on Synology NAS, you can still simply retrieve the files back from recycle bin.
   • Recycle Bin can now be enabled or disabled on different shared folders.

6. QuickConnect - File Sharing:

   • Users can now share any file links with the domain of GoFile.me without configuring port forwarding on the router.

7. Shared Folder Sync:

   • Shared Folder Sync now supports synchronization from multiple Synology NAS to the same destination. This is supported only when DSM 4.1 is running on both source and destination servers.

8. Resource Monitor:

   • The new Resource Monitor app enables you to monitor the CPU, physical memory, disks and network utilization of your Synology DiskStation.
   • View the swap in/out rate as well as IOPS, transfer rate, and the average loading of each disk.
   • Resource monitor log is now available to display the real time, 1 day, 1 week, 1 month, and 1 year of all analyzed reports with historical data.
   • View all the current running and idling processes on your Synology NAS.

9. Connection via Proxy Server:

   • Synology NAS can now connect to the Internet via a proxy server in your LAN. You can update DSM or packages directly in the web interface more easily.
   • HTTP/HTTPS proxy server and authentication are supported.

10. System Log:

    • The System Log consolidates all logs in DSM.
    • Spot important events including error or warning with just a few clicks.
    • Keyword search is available in the system log.

11. SNMP v3:

    • SNMP v3 is now supported for you to monitor Synology NAS with enhanced security.
    • You can download Synology MIB files to configure your NMS (Network Management System) to monitor multiple Synology NAS.
    • IPv6 is supported to enable you to get the system status of your DiskStation.

12. Netatalk is updated to 2.2.3.

13. PHP module is updated to 5.3.15.
14. Openssl has been updated to 1.0.1c.
15. Apache is updated to 2.2.22.

16. Thumbnail Creation Speed:

    • Thumbnail creation speed on Synology NAS has been improved with the new algorithm for thumbnail creation. Below is the test result of the time spent (in seconds) to get thumbnails of 160 MB pictures done.

    DSM 4.0	DSM 4.1	Improvement
    DS1512+	395	150	163.33%
    DS409+	565	500	13.00%
    DS112+	2019	1538	31.27%

    • Photos can now be displayed more quickly in Photo Station in DSM 4.1 with the new thumbnail display mechanism.
    • You are able to set the thumbnail quality to be normal to make the thumbnail converting process a lot faster.

17. Package Center:

    • You can update all packages with a single click on the Update All button.
    • Beta channel in Package Center is now available for subscription if you would like to try the latest/experimental features.
    • Available packages can now be sorted by name or by popularity.

18. VPN connection is supported with reconnect automatically when the connection is lost.

19. NTP server is now built-in in your DiskStation.

20. DS video on iPhone/iPad (Available soon in App Store):

    • Watch videos in supported format (MP4, M4V, MOV) from the Video Station library on iPhone and iPad with DS video.
    • If you have plugged in a DTV dongle to your DiskStation, you will also be able to view and schedule TV program recording with DS video.

21. DS download on iPhone (Available soon in App Store):

    • DS download allows you access Download Station remotely from your iPhone; you can view the list of your download tasks and the information of each task, as well as pause, resume or delete tasks.
    • Create download tasks through the in-built browser in DS download, using Safari, or simply by entering URL.
    • Manage settings of the Download Station, including the maximum upload and download speeds for different types. Advanced schedules defined in Download Station can be activated from DS download.

22. DS file on iPhone/iPad and Android phone/tablet (Available soon in App Store and Play Store):

    • With Cloud Station integration, DS file allows you to sync files with the Cloud Station folder of your DiskStation.
    • Sync files with the Cloud Station folder of your PC/Mac (limited to 10MB per file and to the following formats: doc, ppt, xls, docx, pptx, xlsx, odt, ods, odp, epub, mobi, prc, pdf, txt, html, htm, pages, numbers, key, pages.zip, numbers.zip, key.zip)

23. DS audio on iPhone/iPad (Available soon in App Store):

    • Assign specific songs to be always available for listening by storing on your iOS devices. When the network connection is not available, you can switch to the offline mode and play the songs you’ve downloaded.
    • Create and edit playlists from “Now playing” list.
    • View lyrics of the song currently being played.

24. DS audio on Android phone/tablet (Available soon in Play Store):

    • Android tablets and landscape are supported.
    • You can view lyrics display for song being played.

25. DS photo+ and DS audio on Windows Phone (Available soon in Marketplace):

    • DS photo+ & DS audio are now available on Windows Phone.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2014-09-10)

Fixed Issues

1. Fixed a vulnerability that could allow servers to accept unauthorized access.

(2014-08-27)

Fixed Issues

1. Upgraded OpenSSL to Version 1.0.1n to fix multiple security issues (CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-0198, CVE-2010-5298, CVE-2014-3470, CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-0198, CVE-2010-5298, CVE-2014-3470, CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, CVE-2014-5139 and CVE-2014-0076).
2. Implemented fixes for Kerberos 5 to address multiple security issues that allow remote attackers to cause a denial of service (CVE-2012-1013, CVE-2014-4341, CVE-2014-4342, CVE-2014-4344).
3. Updated to the last version of PHP 5.3, announced EOL by the official PHP development team, to address multiple security vulnerabilities (CVE-2014-3981, CVE-2014-3515, CVE-2013-6712, CVE-2014-0207, CVE-2014-0238, CVE-2014-0237, CVE-2014-4049).
4. Fixed an issue where a partition with exactly 16TB could not be successfully unmounted.
5. Minor bugs fixes.

(2014-03-20)

Fixed Issues

1. Fixed a security issue related to OpenSSL (CVE-2013-4353).
2. Fixed security issues by upgrading PHP to version 5.3.28 (CVE-2013-4073, CVE-2013-6420).
3. Fixed an issue where CalDAV clients cannot get data from CalDAV server.

(2014-02-17)

Change Log

1. This update is required to continue using QuickConnect & Push Service notifications.

(2013-11-14)

Fixed Issues

1. Enhanced CalDAV compatibility with Calendar in iOS7.
2. Enhanced the overall security of DSM.

(2013-08-16)

What's New

1. Resolved an issue where RAID 5 volumes may not be successfully repaired.

(2012-06-14)

Change log

1. Enhanced the system reliability with the fix to memory management.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-05-15)

Change log:

1. Photo Station, Audio Station, Surveillance Station and Download Station packages have been updated. Please refer to these packages’ release notes for details.
2. Enhanced the stability of file based iSCSI LUN over 1TB.
3. Fixed an issue that caused the incorrect aspect ratio in video playback in Photo Station.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-04-17)

Change log:

1. Updated Photo Station, Audio Station, Surveillance Station, Media Server, iTunes Server and Download Station packages to the latest version if they were installed. Please refer to these packages’ release notes for details.
2. Enhanced Samba protocol security by preventing remote code execution as the "root" user (CVE-2012-1182).
3. Added a notification event when the DiskStation enters safe mode due to UPS low battery.
4. Enhanced USB Copy to function properly with an attached iPhone.
5. Fixed an issue where your DiskStation might not enter hibernation while DDNS service is enabled and PPPoE connection is established.
6. Enhanced the overall stability of AFP file protocol.
7. Minor bug fixes.

Limitation & Known Issues

1. Time Backup package has to be updated to the latest version to run on this DSM version.
2. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-03-08)

Change log:

1. Fixed an issue where you may not be able connect to your DiskStation via Internet when Firewall is enabled and set as “Deny Access if no rules are matched”.
2. Fixed an issue where the access to DiskStation share folders via CIFS protocol may be interrupted when DiskStation joins the LDAP service as client, and the account password is changed.
3. Improved the stability of accessing external NTFS drives via CIFS protocol.
4. Other minor fixes.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-03-06)

• DSM 4.0 can only be applied to Synology DiskStation with DSM 3.0 and onward. Download DSM 3.0 at: Americas, Asia, Europe
• Due to the hardware capability, DSM 4.0 will be the last DSM upgrade available for all x08-series DiskStations.
• Due to the hardware capability, not all of the features of DSM 4.0 are available to all models; please see below for more information. If you would like to experience the full potential of DSM 4.0 or the future release of the DSM operating system, please consider upgrading the DiskStation to a newer one.

New Feature Highlights

1. Cloud Station beta (Available in Package Center)

   • Cloud Station is a free package which offers a file-syncing solution on multiple computers that lets you bring your docs and multimedia anywhere and backup them easily.
   • 32 historical file versions are available for each synced file which helps you backup your important files automatically.
   • Recycle bin stored the deleted files for later retrieve if necessary.
   • Privilege control allows the selected users to use Cloud Station to control your network bandwidth.
   • Cloud Station client is now available on Windows XP, Windows Vista, and Windows 7, helping you to sync data between your computers and Synology DiskStation via the IP address or ezCloud ID.
   • Please refer to the release notes of Cloud Station for details.

2. ezCloud Service:

   • ezCloud is a cloud service offering QuickConnect, DDNS, MyDS Center, and Push Notification to help you setup/access/manage Synology DiskStation easily.
   • QuickConnect offers ezCloud ID which allows you to connect your Synology DiskStation using Cloud Station client or DS file without setting up port forwarding rules on your router.
   • Customized ezCloud ID allows you to create your own ezCloud identity.
   • DDNS service is free and now provided by Synology offering you the flexibility to customize your own domain in the easiest way.
   • MyDS Center, a Synology membership service, is now up and running to serve the community at MyDS.Synology.com, you may check your Synology DiskStation status from anywhere via the heartbeat feature and receive the push notification in case of any unexpected shutdown.
   • Push Notification enables you to receive the important messages instantly from your Synology DiskStation via Windows Live Messenger, Skype, DS cam and DS finder for iPhone/iPad.
   • HTTPS connection from DS file is supported in QuickConnect service.

3. Applications Modularization:
   Six previously built-in applications - Photo Station, Audio Station, Download Station, Media Server, iTunes Server, and Surveillance Station - are now modularized to be independent packages, and they can be installed or updated separately without interrupting services running on DSM.

4. iSCSI LUN Backup:

   • Point-in-time backup technology is used to allow copy-on-write implementation. Space re-claim mechanism is added to take place for any 4GB zero-block to reduce the file size of total backup.
   • In addition to the local host, LUN can also be backed up to an attached external storage device, or onto another DiskStation via network.
   • Incremental backup is available after running the initial full backup.

5. Desktop Widgets:
   Seven new widgets are now introduced onto DSM desktop – System Health, Resource Monitor, Scheduled Backup, Storage, Current Connections, System Logs and File Change Logs. You will get an overview of system status and monitor the activities of your Synology DiskStation right after the login.

6. User Interface Enhancements with HTML 5 and CSS3 Transform:

   • Instant Preview allows you to take a quick peek of a running app on the task bar before you switch to it. (Internet Explorer is not supported)
   • Pilot View gives you one place to see and navigate every app running on your DSM with just one click. (Internet Explorer is not supported)
   • You can make groups of shortcuts on DSM 4.0 Desktop.
   • You can personalize the background of the login page in DSM 4.0.

7. Application Portal:
   You can customize the alias or HTTP port for Audio Station, File Station, Surveillance Station or Download Station, meaning you may now skip the DSM login page for better privacy and offer an easier way to share these services with your friends.

8. Antivirus Essential (Available in Package Center):

   • Antivirus Essential is a free and complete antivirus solution from Synology.
   • Scheduled virus scan is available to keep your DiskStation safe and secure in your network at all times.
   • Automatic virus definition update allows you to perform the virus scan always with the latest virus definition.
   • Scanning files on the remote folders are supported.

9. File Station Enhancements:

   • The previous File Browser has now been integrated and renamed to File Station.
   • Windows ACL user interface is now integrated into DSM, so you can edit Windows ACL directly in File Station.
   • Sharable file links are now provided to allow DSM users to share files to others with these private file links, without creating DSM accounts for them.
   • Uploading or downloading multiple files and folders in a sequential order is now available. (Java running on the PC client is required)
   • Personal favorite is now added for quick access to your folders.
   • Instant cut, copy, and paste are now available to manage folders and files between your Synology DiskStation and local computer in File Station.
   • File or folder shortcut on DSM desktop is available by directly drag-and-drop from File Station.
   • The number for maximum files to upload is raised to 300.

10. Surveillance Station 5 Enhancements:

    • Live View Analytics lets user track targets and record events intelligently in real time. Live View Analytics History also provides user the ability to view Live View statistics and playback incidents.
    • Evidence Integrity Authenticator tool enables users to verify the originality of Surveillance Station's recording or snapshot.
    • Fisheye camera is supported to view 360 degree panoramic view. Multiple regions or 180 degrees hemispheric images can be dewarpped from distorted fisheye image.
    • More than 1,000 IP cameras are supported and 200 new IP camera models are added from Samsung, Vivotek, ACTi, Trendnet, D-Link, and etc. Please refer to the here for the complete list.
    • In addition to e-mail and SMS, push notification supports DS cam, Windows Live Messenger, and Skype and can now be scheduled by individual camera or event type simultaneously.
    • Camera can now be added in batch from different models and brands, to help system integrators efficiently setup a multiple of cameras.
    • Surveillance Station is becoming fast and more responsive.

11. Photo Station 5 Enhancements:

    • Uploading photos to Picasa Web Albums or Twitter is now supported with just a few clicks. You can upload multiple photos to Picasa Web Album at a time.
    • The new Detail Mode offers you an additional way to view the picture wall in the original aspect of photos along with their titles.
    • A new album, Blog Images, will be created when you share pictures on your blog. The photos shared on your blog will be copied to this public album.
    • Copying photos between albums is now supported for easy management.

12. Download Station Enhancements:

    • Watched Folder allows you to save torrents or NZB files to the specified folder and download tasks will start automatically.
    • SFTP and FTPS are now supported (not available when downloading a directory).

13. Media Indexing Service:

    • Media Server, Audio Station and iTunes Server can be configured to include additional indexed folders for media scanning.
    • All picture, audio and video collections can now be customized to be scanned in the 3 default multimedia folders. (music, video, and photo)
    • MPEG-4 video conversion is now supported for playback on mobile devices in Photo Station.

14. VPN:
    VPN client is now available to allow you to securely access the resources shared within VPN server's local area network, over the Internet. VPN client supports both PPTP and OpenVPN protocol.

15. Syslog:
    Syslog client is now added to report to your Syslog server, which centralizes logs in one place for easy management.

16. VLAN support:

    • VLAN tagging is now supported on your DiskStation, which improves the manageability, and reduces hardware/administrative cost. Supporting VLAN also helps your DiskStation fit into your existing network infrastructure.

17. Hotspot: (not available on all 08 series, DS109j, and DS209j)

    • Wireless access point is now supported by simply plugging a USB wireless dongle into your DiskStation. For the complete supported list, please see here.

18. Connection Manager:
    A real-time connection list is now added to allow you to monitor who is accessing your data and kill the connections of unwanted users. It is supported in DSM, FTP, Samba, and AFP protocols, as well as shown as the widget on DSM desktop.

19. Configuration Backup Enhancements:

    • Configuration backup is integrated with settings of Control Panel, providing easy migration and fast system recovery.
    • Scheduled system configuration backup is introduced to automatically backup the configurations on a weekly basis to reduce the side effects of the system rollback.
    • You can partially restore system configuration now.

20. VMware vSphere 5.0 VAAI Support:
    Atomic Test & Set (ATS) supported to eliminate LUN-level locking based on SCSI reservations and improve data access performance.

21. DHCP Server: (Available in Package Center)

    • DHCP Server supplies IP address to other computers over TCP/IP networks on multiple subnets. It can also be individually turned on/off for each network interface.

22. SMART Test Scheduler:
    SMART test by schedule is now available to scan HDD for potential risks on a timely basis to prevent data crisis.

23. Smart Remap:
    A new mechanism is in place to protect the degraded RAID from being crashed during the repairing process due to bad sectors.

24. Improved NTFS Performance:
    data transfer rate between NTFS external disks and DiskStation can be 3.7 times as fast as DSM 3.2. The speed test result of writing data to the eSATA drive connected to DiskStation with NTFS partition is listed below:

    DiskStation / DSM version	DSM 3.2	DSM 4.0
    DS1512+	40.88 MB/s	110.66 MB/s
    DS212+	15.36 MB/s	56.98 MB/s

25. Improved Server Response Time (only available on DiskStation with 5 or more bays):
    Now it only takes 7 seconds for server to respond from HDD hibernation.

26. FIPS 140-2 Compliant:
    Synology implementation of AES encryption has been validated by Crytographic Algorithm Validation Program (CAVP)
27. Apple Routers Support:
    EZ-Internet now supports Apple routers - Airport Express, Airport Extreme, and Time Capsule by integrating NAT-PMP. Mac users can now publish their Synology DiskStation onto Internet with just a few clicks. Please refer here for supported router list.

28. ARM Performance Improvements over iSCSI:
    iSCSI data transfer rate on ARM-based DiskStation with RAID 1 disk groups or data volumes is significantly improved by a maximum of 21%. The test result of iSCSI writing is listed below:

    DiskStation / DSM version	DSM 3.2	DSM 4.0
    DS212+	85.94MB/s	96.55MB/s
    DS212	78.43MB/s	95.94MB/s

29. DSM mobile Enhancements:
    Auto Block, User Groups management, Mounting/unmounting encrypted shared folders, running/stopping packages, iSCSI LUN monitor, and the complete resource monitor are now added.

30. iPhone/iPad Apps Upgrade: (Available on Apple® App Store)

    • DS photo+: Supported photos and videos displayed on Apple® TV.
    • DS file: iCloud and QuickConnect is now integrated.
    • DS audio: The recently added albums are now available displayed as a playlist.
    • Push Notification is now implemented on DS finder and DS cam.
    • Login credential encryption will be supported even with HTTP connection. Your sensitive username and password data will be securely transferred when you use DS cam, DS audio and DS finder with DSM 4.0.

31. Android Tablet Support: (Available on Android® Market)

    • Android Tablet support: DS file and DS photo+ are officially supported for devices with Android 3.1 or later. The user interface has been resigned for Android tablets.
    • Login credential encryption will be supported even with HTTP connection. Your sensitive username and password data will be securely transferred when you use DS cam, DS audio and DS finder with DSM 4.0.
    • Push Notification is now implemented on DS finder for Android.

32. Windows Phone Support: (Coming soon on Windows Phone® Marketplace)

    • DS finder will soon be available for your Windows Phone for you to monitor your DiskStation and receive important system notification instantly.

33. Kindle Fire support: (Available on Amazon® App Store): DS photo+, DS audio, DS cam, DS file and DS finder are now supported on Amazon Kindle Fire.

34. The following packages are updated to support DSM 4.0: TimeBackup, VPN Server, Syslog Server, Directory Server, and HiDrive Backup.
35. Upgraded Apache web server to 2.2.22, php module to 5.3.10 and openssl to 1.0.0g.
36. Added 93 new wireless dongles including ABOCOM, ASUS, D-LINK and EDIMAX. For the complete supported list, please see here.

Limitation & Known Issues

1. LUN backup does not support destinations in FAT, NTFS file system, or encrypted shared folder.

Special Notes

1. Browser Support:

   • Internet Explorer 8, 9
   • Google Chrome
   • Firefox 3.6, 4-10 or later
   • Safari 5 (Mac)

2. VPN client supports 1 active connection and up to 16 profiles.

3. QuickConnect supports 2 active connections for each DiskStation.
4. For CMS deployment on Surveillance Station, the DSM versions of Master and Slave must both be 4.0 backward for compatibility.
5. Remote Folder and Virtual Drive cannot be mounted on subfolders in user home that contains “Cloud Station” in its folder’s name.

(2014-11-19)

Fixed Issues

1. Fixed a vulnerability that could allow servers to accept unauthorized access.
2. Improved the compatibility with Edimax EW-7711UAn WiFi dongle.
3. Upgraded OpenSSL to 1.0.0o to address multiple security vulnerabilities (CVE-2011-3210, CVE-2011-3207, CVE-2011-4577, CVE-2012-0027, CVE-2011-4619, CVE-2011-4576, CVE-2011-4108, CVE-2012-0050, CVE-2011-4619, CVE-2012-0884, CVE-2012-2110, CVE-2012-2333, CVE-2013-0166, CVE-2013-0169, CVE-2013-6450, CVE-2014-0224, CVE-2014-0221, CVE-2014-0198, CVE-2014-0195, CVE-2014-3470, CVE-2014-0076, CVE-2010-5298, CVE-2014-3510, CVE-2014-3507, CVE-2014-3506, CVE-2014-3505, CVE-2014-3509, CVE-2014-3508, CVE-2014-3568, CVE-2014-3566, CVE-2014-3567, and CVE-2014-3513).
4. Fixed a security vulnerability regarding Wget that could allow remote FTP servers to write arbitrary files, and consequently execute arbitrary code (CVE-2014-4877).
5. Implemented fixes for Kerberos 5 to address multiple security issues that allow remote attackers to cause a denial of service (CVE-2014-4344 and CVE-2014-4345).
6. Fixed a security vulnerability regarding Curl that could allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted string (CVE-2013-2174).
7. Fixed an issue where configuration settings could be remotely obtained via crafted URL string.

(2014-01-27)

Change log

1. Fixed an issue where Media Indexing Service would consume excessive memory.
2. Enhanced the compatibility of CalDAV with the Mac OS X 10.8 and iOS 6.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-11-26)

Change log

1. Fixed an issue where USB external HDD may not enter hibernation.
2. Enhanced AirPrint compatibility.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-04-17)

Change log

1. Improved NTFS Performance: Data transfer performance between NTFS formatted external hard disk and USB Station 2 can be 2.6 times as fast as the previous version. The speed test result of writing data from USB Station 2 to the connected NTFS USB hard disk is listed below:

DSM version	DSM 3.2-1944	DSM 3.2-1968
USB Station 2	7.92 MB/s	20.87 MB/s

1. Enhanced the DSM Video Player compatibility with VLC media player 2.0.
2. Fixed an issue where you cannot listen to RadioIO Internet radio programs in Audio Station.
3. Minor fixes.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-02-09)

Change log

1. Minor Bug Fixes.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2012-02-09)

Change log

1. Minor Bug Fixes.

Limitation & Known Issues

• Refer to "Limitation & Known Issues for all versions" for other limitations.

(2011-11-30)

Change log:

1. Enhanced the performance of Windows File Sharing protocol.
2. Enhanced the compatibility of iSCSI targets with VMware ESXi servers.
3. Optimized system memory usage during storage and volume management.
4. Enhanced Surveillance Station timeline playback in countries with daylight saving time.
5. Enhanced Photo Station Blog draft saving mechanism.
6. Other minor bug fixes.

Limitation & Known Issues

1. Refer to "Limitation & Known Issues for all versions" for other limitations.