DSM Specifications |
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Maximum Single Volume Size
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- 200 TB (32 GB memory required)
- 108 TB
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Maximum Internal Volume Number
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256
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SSD Read/Write Cache (Determining cache size)
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SSD TRIM
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RAID Group
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Supported RAID Type
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- RAID F1
- Basic
- JBOD
- RAID 0
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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RAID Migration
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- Basic to RAID 1
- Basic to RAID 5
- RAID 1 to RAID 5
- RAID 5 to RAID 6
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Volume Expansion with Larger HDDs
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- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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Volume Expansion by Adding a HDD
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Global Hot Spare Supported RAID Type
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- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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Notes
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- Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
- Volumes over 108 TB require 32 GB of memory or more.
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Internal Drives
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External Drives
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- Btrfs
- ext4
- ext3
- FAT
- NTFS
- HFS+
- exFAT
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Notes
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exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
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File Protocol
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Maximum Concurrent SMB/AFP/FTP Connections
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4,000
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Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)
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10,000
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Windows Access Control List (ACL) Integration
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NFS Kerberos Authentication
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Notes
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- Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
- During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration.
- The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
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Maximum Local User Accounts
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16,000
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Maximum Local Groups
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512
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Maximum Shared Folder
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512
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Maximum Shared Folder Sync Tasks
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32
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Maximum Hybrid Share Folders
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15
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Folder and Package Backup
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Entire System Backup
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Notes
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Full-system backup requires DSM 7.2 or later.
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Synology High Availability
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Syslog Events per Second
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3,000
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Virtualization |
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Virtualization
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VMware ESXi 6.5 and VAAI
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Windows Server 2022
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Citrix Ready
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OpenStack
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Supported Protocols
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SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
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Supported Browsers
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Supported Language
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English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
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Notes
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For an updated list of supported browser versions, check the DSM Technical Specifications.
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Suggested Users
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4,000
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Suggested Users
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500
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Notes
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Models with expandable memory are tested with their maximum supported memory.
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Download Station |
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Download Station
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Maximum Concurrent Download Tasks
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80
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Maximum iSCSI Target Number
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256
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Maximum LUN
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512
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LUN Clone/Snapshot, Windows ODX
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Free Email Accounts
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5 (Additional accounts require purchase of licenses)
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Suggested Users
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7,500
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Maximum Server Performance
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4,235,000 emails per day, approx. 129 GB
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Notes
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- Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more
- Models with more than 4 bays were installed with two SSDs for SSD cache.
- Models with expandable memory are tested with their maximum supported memory.
- The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
- Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
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DLNA Compliance
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Facial Recognition
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Object Recognition
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Maximum Snapshots per Shared Folder
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1,024
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Maximum of System Snapshots
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65,536
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Default Licenses
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2 (Additional cameras require purchase of licenses)
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Suggested Maximum IP Cameras and Total FPS (H.264)
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- 720p: 90 channels, 2700 FPS
- 1080p: 90 channels, 2250 FPS
- 3M: 90 channels, 1500 FPS
- 5M: 90 channels, 900 FPS
- 4K: 55 channels, 550 FPS
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Suggested Maximum IP Cameras and Total FPS (H.265)
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- 720p: 90 channels, 2700 FPS
- 1080p: 90 channels, 2700 FPS
- 3M: 90 channels, 2250 FPS
- 5M: 90 channels, 1500 FPS
- 4K: 90 channels, 1080 FPS
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Notes
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- Performance figures are obtained from testing conducted with the device fully populated with drives, with their default memory configuration, and under a continuous recording setup. Actual system capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads.
- Use NVR Selector to quickly find a suitable model based on your requirements.
- The maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
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Recommended Number of Concurrent Sync Clients
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1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached)
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Recommended Number of Hosted Files
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50,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
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Notes
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- Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
- Utilizing SSD cache can significantly improve performance.
- Models with expandable memory are tested with their maximum supported memory.
- Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
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Suggested Users
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12,500
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Notes
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- Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
- Models with expandable memory are tested with their maximum supported memory.
- Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
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Recommended Virtual Machine Instances
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12 (Learn more)
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Recommended Virtual DSM Number (Licenses required)
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12 (including 1 Free License)
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Notes
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The specifications vary depending on system configuration and memory size.
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Maximum Connections
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60
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