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Bee Series by Synology
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Comparison results

RS1221+ RS822+
RS1221+ RS822+
Hardware Specs
Hardware Specifications
CPU
CPU Model AMD Ryzen V1500B AMD Ryzen V1500B
CPU Quantity 1 1
CPU Core 4 4
CPU Architecture 64-bit 64-bit
CPU Frequency 2.2 GHz 2.2 GHz
Hardware Encryption Engine
Memory
System Memory 4 GB DDR4 ECC SODIMM 2 GB DDR4 ECC SODIMM
Memory Module Pre-installed 4 GB (4 GB x 1) 2 GB (2 GB x 1)
Total Memory Slots 2 2
Maximum Memory Capacity 32 GB (16 GB x 2) 32 GB (16 GB x 2)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
Storage
Drive Bays 8 4
Maximum Drive Bays with Expansion Unit 12 (RX418 x 1) 8 (RX418 x 1)
Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
External Ports
RJ-45 1GbE LAN Port 4 4
USB 3.2 Gen 1 Port* 2 2
Expansion Port 1 1
Expansion Port Type eSATA eSATA
Notes This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
PCIe
PCIe Expansion 1 x Gen3 x8 slot (x4 link) 1 x Gen3 x8 slot (x4 link)
Appearance
Form Factor (RU) 2U 1U
Size (Height x Width x Depth) 88 mm x 482 mm x 306.6 mm 44 mm x 480 mm x 492.6 mm
Weight 6.9 kg 6.4 kg
Rack Installation Support*
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
Notes The rail kit is sold separately The rail kit is sold separately
Others
System Fan 80 mm x 80 mm x 2 pcs 40 mm x 40 mm x 3 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Power Recovery
Noise Level* 37.8 dB(A) 27.4 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 250 watts 150 watts
AC Input Power Voltage 100 V to 240 V AC 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption 49.89 watts (Access)
22.64 watts (HDD Hibernation)		 47.69 watts (Access)
16.7 watts (HDD Hibernation)
British Thermal Unit 170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)		 162.83 BTU/hr (Access)
57.02 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
  • For more information on how power consumption is measured, refer to this article.
  • Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature
Operating Temperature 0°C to 35°C (32°F to 95°F) 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • UL
Warranty 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment RoHS Compliant RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • C13 to C14 power cord x 1
  • Quick Installation Guide X 1
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Quick Installation Guide X 1
Optional Accessories
Notes
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size 108 TB 108 TB
Maximum Internal Volume Number 64 64
SSD Read/Write Cache (Determining cache size)
SSD TRIM
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
File System
Internal Drives
  • Btrfs
  • ext4
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections 1,000 500
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) 2,000 2,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
Account & Shared Folder
Maximum Local User Accounts 2,048 2,048
Maximum Local Groups 256 256
Maximum Shared Folder 512 512
Maximum Shared Folder Sync Tasks 16 8
Hybrid Share
Hybrid Share Folder Number 10 10
Hyper Backup
Folder and Package Backup
Entire System Backup
Notes Full-system backup requires DSM 7.2 or later. Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
Log Center
Syslog Events per Second 1,000 800
Virtualization
VMware ESXi 6.5 and VAAI
Windows Server 2016
Windows Server 2019
Windows Server 2022
Citrix Ready
OpenStack
General Specifications
Supported Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Safari
  • Chrome
  • Firefox
  • Edge
  • Safari
Supported Language 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 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
Notes For an updated list of supported browser versions, check the DSM Technical Specifications. For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
Synology Chat
Suggested Users 150 150
Notes Models with expandable memory are tested with their maximum supported memory.
  • Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds.
  • Models with expandable memory are tested with their maximum supported memory.
Download Station
Maximum Concurrent Download Tasks 80 80
SAN Manager
Maximum iSCSI Target Number 128 128
Maximum LUN 256 256
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Free Email Accounts 5 (Additional accounts require purchase of licenses) 5 (Additional accounts require purchase of licenses)
Suggested Users 750 750
Notes
  • 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
  • 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).
  • Models with expandable memory are tested with their maximum supported memory. To estimate the RAM requirement for your NAS, please read this article.
  • 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
  • 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).
  • Models with expandable memory are tested with their maximum supported memory. To estimate the RAM requirement for your NAS, please read this article.
Media Server
DLNA Compliance
Synology Photos
Facial Recognition
Object Recognition
Notes Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
Snapshot Replication
Maximum Snapshots per Shared Folder 1,024 1,024
Maximum of System Snapshots 65,536 65,536
Surveillance Station
Default Licenses 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
  • 1080p: 40 channels, 800 FPS
  • 3M: 35 channels, 350 FPS
  • 5M: 28 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 480 FPS
  • 4K: 20 channels, 200 FPS
Notes
  • 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 number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
  • 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 number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
Synology Drive
Recommended Number of Concurrent Sync Clients 550 (the number of connections that can be maintained when the recommended number of hosted files was reached) 550 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files 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) 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)
Notes
  • 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.
  • 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.
Synology Office
Suggested Users 4,500 4,500
Notes
  • 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
  • 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
Virtual Machine Manager
Recommended Virtual Machine Instances 8 (Learn more) 8 (Learn more)
Recommended Virtual DSM Number (Licenses required) 8 (including 1 Free License) 8 (including 1 Free License)
Notes The specifications vary depending on system configuration and memory size. The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections 40 40
Hardware Specs
Hardware Specifications
CPU
CPU Model
RS1221+ AMD Ryzen V1500B
RS822+ AMD Ryzen V1500B
CPU Quantity
RS1221+ 1
RS822+ 1
CPU Core
RS1221+ 4
RS822+ 4
CPU Architecture
RS1221+ 64-bit
RS822+ 64-bit
CPU Frequency
RS1221+ 2.2 GHz
RS822+ 2.2 GHz
Hardware Encryption Engine
RS1221+
RS822+
Memory
System Memory
RS1221+ 4 GB DDR4 ECC SODIMM
RS822+ 2 GB DDR4 ECC SODIMM
Memory Module Pre-installed
RS1221+ 4 GB (4 GB x 1)
RS822+ 2 GB (2 GB x 1)
Total Memory Slots
RS1221+ 2
RS822+ 2
Maximum Memory Capacity
RS1221+ 32 GB (16 GB x 2)
RS822+ 32 GB (16 GB x 2)
Notes
RS1221+
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
RS822+
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.
Storage
Drive Bays
RS1221+ 8
RS822+ 4
Maximum Drive Bays with Expansion Unit
RS1221+ 12 (RX418 x 1)
RS822+ 8 (RX418 x 1)
Drive Type (See all supported drives)
RS1221+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
RS822+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
RS1221+
RS822+
External Ports
RJ-45 1GbE LAN Port
RS1221+ 4
RS822+ 4
USB 3.2 Gen 1 Port*
RS1221+ 2
RS822+ 2
Expansion Port
RS1221+ 1
RS822+ 1
Expansion Port Type
RS1221+ eSATA
RS822+ eSATA
Notes
RS1221+
RS822+ This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
PCIe
PCIe Expansion
RS1221+ 1 x Gen3 x8 slot (x4 link)
RS822+ 1 x Gen3 x8 slot (x4 link)
Appearance
Form Factor (RU)
RS1221+ 2U
RS822+ 1U
Size (Height x Width x Depth)
RS1221+ 88 mm x 482 mm x 306.6 mm
RS822+ 44 mm x 480 mm x 492.6 mm
Weight
RS1221+ 6.9 kg
RS822+ 6.4 kg
Rack Installation Support*
RS1221+
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
RS822+ 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
Notes
RS1221+ The rail kit is sold separately
RS822+ The rail kit is sold separately
Others
System Fan
RS1221+ 80 mm x 80 mm x 2 pcs
RS822+ 40 mm x 40 mm x 3 pcs
Fan Speed Mode
RS1221+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
RS822+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Power Recovery
RS1221+
RS822+
Noise Level*
RS1221+ 37.8 dB(A)
RS822+ 27.4 dB(A)
Scheduled Power On / Off
RS1221+
RS822+
Wake on LAN / WAN
RS1221+
RS822+
Power Supply Unit / Adapter
RS1221+ 250 watts
RS822+ 150 watts
AC Input Power Voltage
RS1221+ 100 V to 240 V AC
RS822+ 100 V to 240 V AC
Power Frequency
RS1221+ 50/60 Hz, Single Phase
RS822+ 50/60 Hz, Single Phase
Power Consumption
RS1221+ 49.89 watts (Access)
22.64 watts (HDD Hibernation)
RS822+ 47.69 watts (Access)
16.7 watts (HDD Hibernation)
British Thermal Unit
RS1221+ 170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)
RS822+ 162.83 BTU/hr (Access)
57.02 BTU/hr (HDD Hibernation)
Notes
RS1221+
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
RS822+
  • For more information on how power consumption is measured, refer to this article.
  • Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature
Operating Temperature
RS1221+ 0°C to 35°C (32°F to 95°F)
RS822+ 0°C to 35°C (32°F to 95°F)
Storage Temperature
RS1221+ -20°C to 60°C (-5°F to 140°F)
RS822+ -20°C to 60°C (-5°F to 140°F)
Relative Humidity
RS1221+ 5% to 95% RH
RS822+ 5% to 95% RH
Certification
RS1221+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
RS822+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • UL
Warranty
RS1221+ 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
RS822+ 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
Notes
RS1221+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
RS822+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment
RS1221+ RoHS Compliant
RS822+ RoHS Compliant
Packaging Content
RS1221+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • C13 to C14 power cord x 1
  • Quick Installation Guide X 1
RS822+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Quick Installation Guide X 1
Optional Accessories
RS1221+
RS822+
Notes
RS1221+
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
RS822+
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
RS1221+ 108 TB
RS822+ 108 TB
Maximum Internal Volume Number
RS1221+ 64
RS822+ 64
SSD Read/Write Cache (Determining cache size)
RS1221+
RS822+
SSD TRIM
RS1221+
RS822+
Supported RAID Type
RS1221+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS822+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
RS1221+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
RS822+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
RS1221+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS822+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
RS1221+
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
RS822+
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
RS1221+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS822+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
RS1221+
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
RS822+
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
File System
Internal Drives
RS1221+
  • Btrfs
  • ext4
RS822+
  • Btrfs
  • ext4
External Drives
RS1221+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
RS822+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
RS1221+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
RS822+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections
RS1221+ 1,000
RS822+ 500
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)
RS1221+ 2,000
RS822+ 2,000
Windows Access Control List (ACL) Integration
RS1221+
RS822+
NFS Kerberos Authentication
RS1221+
RS822+
Notes
RS1221+
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
RS822+
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
Account & Shared Folder
Maximum Local User Accounts
RS1221+ 2,048
RS822+ 2,048
Maximum Local Groups
RS1221+ 256
RS822+ 256
Maximum Shared Folder
RS1221+ 512
RS822+ 512
Maximum Shared Folder Sync Tasks
RS1221+ 16
RS822+ 8
Hybrid Share
Hybrid Share Folder Number
RS1221+ 10
RS822+ 10
Hyper Backup
Folder and Package Backup
RS1221+
RS822+
Entire System Backup
RS1221+
RS822+
Notes
RS1221+ Full-system backup requires DSM 7.2 or later.
RS822+ Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
RS1221+
RS822+
Log Center
RS1221+
RS822+
Syslog Events per Second
RS1221+ 1,000
RS822+ 800
Virtualization
VMware ESXi 6.5 and VAAI
RS1221+
RS822+
Windows Server 2016
RS1221+
RS822+
Windows Server 2019
RS1221+
RS822+
Windows Server 2022
RS1221+
RS822+
Citrix Ready
RS1221+
RS822+
OpenStack
RS1221+
RS822+
General Specifications
Supported Protocols
RS1221+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
RS822+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
RS1221+
  • Chrome
  • Firefox
  • Edge
  • Safari
RS822+
  • Chrome
  • Firefox
  • Edge
  • Safari
Supported Language
RS1221+ 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
RS822+ 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
Notes
RS1221+ For an updated list of supported browser versions, check the DSM Technical Specifications.
RS822+ For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
RS1221+
RS822+
Synology Chat
RS1221+
RS822+
Suggested Users
RS1221+ 150
RS822+ 150
Notes
RS1221+ Models with expandable memory are tested with their maximum supported memory.
RS822+
  • Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds.
  • Models with expandable memory are tested with their maximum supported memory.
Download Station
RS1221+
RS822+
Maximum Concurrent Download Tasks
RS1221+ 80
RS822+ 80
SAN Manager
RS1221+
RS822+
Maximum iSCSI Target Number
RS1221+ 128
RS822+ 128
Maximum LUN
RS1221+ 256
RS822+ 256
LUN Clone/Snapshot, Windows ODX
RS1221+
RS822+
Synology MailPlus / MailPlus Server
RS1221+
RS822+
Free Email Accounts
RS1221+ 5 (Additional accounts require purchase of licenses)
RS822+ 5 (Additional accounts require purchase of licenses)
Suggested Users
RS1221+ 750
RS822+ 750
Notes
RS1221+
  • 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
  • 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).
  • Models with expandable memory are tested with their maximum supported memory. To estimate the RAM requirement for your NAS, please read this article.
RS822+
  • 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
  • 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).
  • Models with expandable memory are tested with their maximum supported memory. To estimate the RAM requirement for your NAS, please read this article.
Media Server
RS1221+
RS822+
DLNA Compliance
RS1221+
RS822+
Synology Photos
RS1221+
RS822+
Facial Recognition
RS1221+
RS822+
Object Recognition
RS1221+
RS822+
Notes
RS1221+
RS822+ Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
Snapshot Replication
RS1221+
RS822+
Maximum Snapshots per Shared Folder
RS1221+ 1,024
RS822+ 1,024
Maximum of System Snapshots
RS1221+ 65,536
RS822+ 65,536
Surveillance Station
RS1221+
RS822+
Default Licenses
RS1221+ 2 (Additional cameras require purchase of licenses)
RS822+ 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
RS1221+
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
RS822+
  • 1080p: 40 channels, 800 FPS
  • 3M: 35 channels, 350 FPS
  • 5M: 28 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
RS1221+
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
RS822+
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 480 FPS
  • 4K: 20 channels, 200 FPS
Notes
RS1221+
  • 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 number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
RS822+
  • 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 number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
Synology Drive
RS1221+
RS822+
Recommended Number of Concurrent Sync Clients
RS1221+ 550 (the number of connections that can be maintained when the recommended number of hosted files was reached)
RS822+ 550 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files
RS1221+ 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)
RS822+ 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)
Notes
RS1221+
  • 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.
RS822+
  • 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.
Synology Office
RS1221+
RS822+
Suggested Users
RS1221+ 4,500
RS822+ 4,500
Notes
RS1221+
  • 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
RS822+
  • 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
Virtual Machine Manager
RS1221+
RS822+
Recommended Virtual Machine Instances
RS1221+ 8 (Learn more)
RS822+ 8 (Learn more)
Recommended Virtual DSM Number (Licenses required)
RS1221+ 8 (including 1 Free License)
RS822+ 8 (including 1 Free License)
Notes
RS1221+ The specifications vary depending on system configuration and memory size.
RS822+ The specifications vary depending on system configuration and memory size.
VPN Server
RS1221+
RS822+
Maximum Connections
RS1221+ 40
RS822+ 40