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Comparison results

DS2422+ RS1221+
Hardware Specs
Hardware Specifications
CPU
CPU Model AMD Ryzen V1500B AMD Ryzen V1500B
CPU Quantity 1 1
CPU Cores 4 4
CPU Threads 8 8
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 4 GB DDR4 ECC SODIMM
Total Memory Slots 2 2
Maximum Memory Capacity 32 GB (16 GB x 2) 32 GB (16 GB x 2)
Notes
  • Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and 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 may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and 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 12 8
Maximum Drive Bays with Expansion Unit 24 (DX1222 x 1) 12 (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 HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
Notes Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
External Ports
RJ-45 1GbE LAN Port 4 4
USB 3.2 Gen 1 Port 2 2
Expansion Port 1 1
Expansion Port Type Mini-SAS HD eSATA
Notes MTU value of 1GbE LAN port has a limit of 1500.
PCIe
PCIe Expansion 1 x Gen3 x8 slot (x4 link) 1 x Gen3 x8 slot (x4 link)
Appearance
Form Factor (RU) 2U
Size (Height x Width x Depth) 270 mm x 300 mm x 340 mm 88 mm x 482 mm x 306.6 mm
Weight 9.5 kg 6.9 kg
Rack Installation Support*
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
Notes The rail kit is sold separately
Others
System Fan 120 mm x 120 mm x 2 pcs 80 mm x 80 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 25 dB(A) 37.8 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 550 watts 250 watts
AC Input Power Voltage 100V to 240V AC 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption 73.11 watts (Access)
32.12 watts (HDD Hibernation)		 49.89 watts (Access)
22.64 watts (HDD Hibernation)
British Thermal Unit 249.63 BTU/hr (Access)
109.67 BTU/hr (HDD Hibernation)		 170.23 BTU/hr (Access)
77.25 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%
  • 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%
Temperature
Operating Temperature 0°C to 40°C (32°F to 104°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)
Operating Humidity 8% to 80% RH 8% to 80% RH
Storage Humidity 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • BIS
  • UL
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty 3-year hardware warranty, extendable to 5 years with EW202 3-year hardware warranty, extendable to 5 years with EW202
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty 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)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty 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
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
  • 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
Optional Accessories
Notes
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade DSM to version 7.2-64551 or onward before installing 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
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
  • RAID 10
Notes
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • 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.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • 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.
File System
Internal Drives
  • Btrfs
  • ext4
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based) 90 180
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes
  • Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
    • Test workload: HomeFolder scenario provided by the FSCT tool
    • Test duration: 600 seconds
    • Domain controller & FSCT controller: Windows Server 2022
    • FSCT clients: 8 × Windows 10 machines
    • SMB feature: Directory leasing enabled
  • Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
    • Test workload: HomeFolder scenario provided by the FSCT tool
    • Test duration: 600 seconds
    • Domain controller & FSCT controller: Windows Server 2022
    • FSCT clients: 8 × Windows 10 machines
    • SMB feature: Directory leasing enabled
Account & Shared Folder
Maximum Local User Accounts 1,024 1,024
Maximum Local Groups 256 256
Maximum Shared Folder 256 256
Maximum Shared Folder Sync Tasks 8 8
Hybrid Share
Hybrid Share Folder Number 10 10
Hyper Backup
Data & Folder 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 1,000
Virtualization
VMware vSphere ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5 ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
Microsoft Hyper-V Windows Server 2022 Windows Server 2022, Windows Server 2019, Windows Server 2016
Citrix XenServer XenServer 8, Citrix Hypervisor 8.2 LTSR CU1 XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack Cinder Cinder
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 AI Console
Third-Party AI Model Integration
Maximum De-Identification Rate 90 words per second 180 words per second
Notes
  • De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text.
  • To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
  • De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text.
  • To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
Synology Chat
Maximum Number of Users 150 150
Notes
  • 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 the maximum supported quantity installed.
  • 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 the maximum supported quantity installed.
Download Station
Maximum Concurrent Download Tasks 80 80
SAN Manager
Maximum iSCSI Target Number 64 64
Maximum LUN 128 128
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)
Maximum Number of Users 190 380
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
  • Operating in high-availability mode will incur additional overhead.
  • Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
  • The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
  • Operating in high-availability mode will incur additional overhead.
  • Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
Media Server
DLNA Compliance
Synology Photos
Facial Recognition
Object Recognition
Snapshot Replication
Maximum Snapshots per Shared Folder 256 256
Maximum Snapshots per LUN 64 64
Maximum Snapshots per System 4,096 4,096
Maximum Replication Tasks for Shared Folders 32 32
Maximum Replication Tasks for LUNs 16 16
Maximum Replication Tasks per System 32 32
Surveillance Station
Default Licenses 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses)
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, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
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, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
  • 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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
Synology Drive
Maximum Number of Users 170 320
Maximum Number of Hosted Files 1,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
  • The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Maximum Number of Users 160 320
Notes
  • The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
  • The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • 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 8 8
Hardware Specs
Hardware Specifications
CPU
CPU Model
DS2422+ AMD Ryzen V1500B
RS1221+ AMD Ryzen V1500B
CPU Quantity
DS2422+ 1
RS1221+ 1
CPU Cores
DS2422+ 4
RS1221+ 4
CPU Threads
DS2422+ 8
RS1221+ 8
CPU Architecture
DS2422+ 64-bit
RS1221+ 64-bit
CPU Frequency
DS2422+ 2.2 GHz
RS1221+ 2.2 GHz
Hardware Encryption Engine
DS2422+
RS1221+
Memory
System Memory
DS2422+ 4 GB DDR4 ECC SODIMM
RS1221+ 4 GB DDR4 ECC SODIMM
Total Memory Slots
DS2422+ 2
RS1221+ 2
Maximum Memory Capacity
DS2422+ 32 GB (16 GB x 2)
RS1221+ 32 GB (16 GB x 2)
Notes
DS2422+
  • Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and 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.
RS1221+
  • Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and 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
DS2422+ 12
RS1221+ 8
Maximum Drive Bays with Expansion Unit
DS2422+ 24 (DX1222 x 1)
RS1221+ 12 (RX418 x 1)
Drive Type (See all supported drives)
DS2422+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
RS1221+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
DS2422+
RS1221+
Notes
DS2422+ Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
RS1221+
External Ports
RJ-45 1GbE LAN Port
DS2422+ 4
RS1221+ 4
USB 3.2 Gen 1 Port
DS2422+ 2
RS1221+ 2
Expansion Port
DS2422+ 1
RS1221+ 1
Expansion Port Type
DS2422+ Mini-SAS HD
RS1221+ eSATA
Notes
DS2422+ MTU value of 1GbE LAN port has a limit of 1500.
RS1221+
PCIe
PCIe Expansion
DS2422+ 1 x Gen3 x8 slot (x4 link)
RS1221+ 1 x Gen3 x8 slot (x4 link)
Appearance
Form Factor (RU)
DS2422+
RS1221+ 2U
Size (Height x Width x Depth)
DS2422+ 270 mm x 300 mm x 340 mm
RS1221+ 88 mm x 482 mm x 306.6 mm
Weight
DS2422+ 9.5 kg
RS1221+ 6.9 kg
Rack Installation Support*
DS2422+
RS1221+
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)
Notes
DS2422+
RS1221+ The rail kit is sold separately
Others
System Fan
DS2422+ 120 mm x 120 mm x 2 pcs
RS1221+ 80 mm x 80 mm x 2 pcs
Fan Speed Mode
DS2422+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
RS1221+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
DS2422+
RS1221+
Power Recovery
DS2422+
RS1221+
Noise Level*
DS2422+ 25 dB(A)
RS1221+ 37.8 dB(A)
Scheduled Power On / Off
DS2422+
RS1221+
Wake on LAN / WAN
DS2422+
RS1221+
Power Supply Unit / Adapter
DS2422+ 550 watts
RS1221+ 250 watts
AC Input Power Voltage
DS2422+ 100V to 240V AC
RS1221+ 100 V to 240 V AC
Power Frequency
DS2422+ 50/60 Hz, Single Phase
RS1221+ 50/60 Hz, Single Phase
Power Consumption
DS2422+ 73.11 watts (Access)
32.12 watts (HDD Hibernation)
RS1221+ 49.89 watts (Access)
22.64 watts (HDD Hibernation)
British Thermal Unit
DS2422+ 249.63 BTU/hr (Access)
109.67 BTU/hr (HDD Hibernation)
RS1221+ 170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)
Notes
DS2422+
  • 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%
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%
Temperature
Operating Temperature
DS2422+ 0°C to 40°C (32°F to 104°F)
RS1221+ 0°C to 35°C (32°F to 95°F)
Storage Temperature
DS2422+ -20°C to 60°C (-5°F to 140°F)
RS1221+ -20°C to 60°C (-5°F to 140°F)
Operating Humidity
DS2422+ 8% to 80% RH
RS1221+ 8% to 80% RH
Storage Humidity
DS2422+ 5% to 95% RH
RS1221+ 5% to 95% RH
Certification
DS2422+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • BIS
  • UL
RS1221+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty
DS2422+ 3-year hardware warranty, extendable to 5 years with EW202
RS1221+ 3-year hardware warranty, extendable to 5 years with EW202
Notes
DS2422+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty website for details on supported countries/regions. (Learn more)
RS1221+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty website for details on supported countries/regions. (Learn more)
Environment
DS2422+ RoHS Compliant
RS1221+ RoHS Compliant
Packaging Content
DS2422+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
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
Optional Accessories
DS2422+
RS1221+
Notes
DS2422+
RS1221+
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
  • Upgrade DSM to version 7.2-64551 or onward before installing M2D18.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
DS2422+ 108 TB
RS1221+ 108 TB
Maximum Internal Volume Number
DS2422+ 64
RS1221+ 64
SSD Read/Write Cache (Determining cache size)
DS2422+
RS1221+
SSD TRIM
DS2422+
RS1221+
Supported RAID Type
DS2422+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS1221+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
DS2422+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
RS1221+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
DS2422+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS1221+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
DS2422+
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
RS1221+
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
DS2422+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS1221+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
DS2422+
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • 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.
RS1221+
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • 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.
File System
Internal Drives
DS2422+
  • Btrfs
  • ext4
RS1221+
  • Btrfs
  • ext4
External Drives
DS2422+
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
RS1221+
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
DS2422+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
RS1221+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based)
DS2422+ 90
RS1221+ 180
Windows Access Control List (ACL) Integration
DS2422+
RS1221+
NFS Kerberos Authentication
DS2422+
RS1221+
Notes
DS2422+
  • Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
    • Test workload: HomeFolder scenario provided by the FSCT tool
    • Test duration: 600 seconds
    • Domain controller & FSCT controller: Windows Server 2022
    • FSCT clients: 8 × Windows 10 machines
    • SMB feature: Directory leasing enabled
RS1221+
  • Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
    • Test workload: HomeFolder scenario provided by the FSCT tool
    • Test duration: 600 seconds
    • Domain controller & FSCT controller: Windows Server 2022
    • FSCT clients: 8 × Windows 10 machines
    • SMB feature: Directory leasing enabled
Account & Shared Folder
Maximum Local User Accounts
DS2422+ 1,024
RS1221+ 1,024
Maximum Local Groups
DS2422+ 256
RS1221+ 256
Maximum Shared Folder
DS2422+ 256
RS1221+ 256
Maximum Shared Folder Sync Tasks
DS2422+ 8
RS1221+ 8
Hybrid Share
Hybrid Share Folder Number
DS2422+ 10
RS1221+ 10
Hyper Backup
Data & Folder Backup
DS2422+
RS1221+
Entire System Backup
DS2422+
RS1221+
Notes
DS2422+ Full-system backup requires DSM 7.2 or later.
RS1221+ Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
DS2422+
RS1221+
Log Center
DS2422+
RS1221+
Syslog Events per Second
DS2422+ 1,000
RS1221+ 1,000
Virtualization
VMware vSphere
DS2422+ ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
RS1221+ ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5
Microsoft Hyper-V
DS2422+ Windows Server 2022
RS1221+ Windows Server 2022, Windows Server 2019, Windows Server 2016
Citrix XenServer
DS2422+ XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
RS1221+ XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack
DS2422+ Cinder
RS1221+ Cinder
General Specifications
Supported Protocols
DS2422+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
RS1221+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
DS2422+
  • Chrome
  • Firefox
  • Edge
  • Safari
RS1221+
  • Chrome
  • Firefox
  • Edge
  • Safari
Supported Language
DS2422+ 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
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
Notes
DS2422+ For an updated list of supported browser versions, check the DSM Technical Specifications.
RS1221+ For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
DS2422+
RS1221+
Synology AI Console
DS2422+
RS1221+
Third-Party AI Model Integration
DS2422+
RS1221+
Maximum De-Identification Rate
DS2422+ 90 words per second
RS1221+ 180 words per second
Notes
DS2422+
  • De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text.
  • To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
RS1221+
  • De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text.
  • To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed.
Synology Chat
DS2422+
RS1221+
Maximum Number of Users
DS2422+ 150
RS1221+ 150
Notes
DS2422+
  • 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 the maximum supported quantity installed.
RS1221+
  • 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 the maximum supported quantity installed.
Download Station
DS2422+
RS1221+
Maximum Concurrent Download Tasks
DS2422+ 80
RS1221+ 80
SAN Manager
DS2422+
RS1221+
Maximum iSCSI Target Number
DS2422+ 64
RS1221+ 64
Maximum LUN
DS2422+ 128
RS1221+ 128
LUN Clone/Snapshot, Windows ODX
DS2422+
RS1221+
Synology MailPlus / MailPlus Server
DS2422+
RS1221+
Free Email Accounts
DS2422+ 5 (Additional accounts require purchase of licenses)
RS1221+ 5 (Additional accounts require purchase of licenses)
Maximum Number of Users
DS2422+ 190
RS1221+ 380
Notes
DS2422+
  • The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
  • Operating in high-availability mode will incur additional overhead.
  • Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
RS1221+
  • The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
  • Operating in high-availability mode will incur additional overhead.
  • Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
Media Server
DS2422+
RS1221+
DLNA Compliance
DS2422+
RS1221+
Synology Photos
DS2422+
RS1221+
Facial Recognition
DS2422+
RS1221+
Object Recognition
DS2422+
RS1221+
Snapshot Replication
DS2422+
RS1221+
Maximum Snapshots per Shared Folder
DS2422+ 256
RS1221+ 256
Maximum Snapshots per LUN
DS2422+ 64
RS1221+ 64
Maximum Snapshots per System
DS2422+ 4,096
RS1221+ 4,096
Maximum Replication Tasks for Shared Folders
DS2422+ 32
RS1221+ 32
Maximum Replication Tasks for LUNs
DS2422+ 16
RS1221+ 16
Maximum Replication Tasks per System
DS2422+ 32
RS1221+ 32
Surveillance Station
DS2422+
RS1221+
Default Licenses
DS2422+ 2 (Additional cameras require purchase of licenses)
RS1221+ 2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
DS2422+
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
RS1221+
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 440 FPS
  • 4K: 32 channels, 320 FPS
Maximum IP Cameras and Total FPS (H.265)
DS2422+
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
RS1221+
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1120 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 40 channels, 480 FPS
Notes
DS2422+
  • 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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
Synology Drive
DS2422+
RS1221+
Maximum Number of Users
DS2422+ 170
RS1221+ 320
Maximum Number of Hosted Files
DS2422+ 1,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
RS1221+ 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Notes
DS2422+
  • The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
RS1221+
  • The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
DS2422+
RS1221+
Maximum Number of Users
DS2422+ 160
RS1221+ 320
Notes
DS2422+
  • The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
RS1221+
  • The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more
  • Models with SSD support are tested with a single SSD volume.
  • Models with expandable memory are tested with the maximum supported quantity installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Virtual Machine Manager
DS2422+
RS1221+
Recommended Virtual Machine Instances
DS2422+ 8 (Learn more)
RS1221+ 8 (Learn more)
Recommended Virtual DSM Number (Licenses required)
DS2422+ 8 (including 1 Free License)
RS1221+ 8 (including 1 Free License)
Notes
DS2422+ The specifications vary depending on system configuration and memory size.
RS1221+ The specifications vary depending on system configuration and memory size.
VPN Server
DS2422+
RS1221+
Maximum Connections
DS2422+ 8
RS1221+ 8