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Bee Series by Synology
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Comparison results

DS3622xs+ RS3621xs+
DS3622xs+ RS3621xs+
Hardware Specs
Hardware Specifications
CPU
CPU Model Intel Xeon D-1531 Intel Xeon D-1541
CPU Quantity 1 1
CPU Core 6 8
CPU Architecture 64-bit 64-bit
CPU Frequency 2.2 (base) / 2.7 (turbo) GHz 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine
Memory
System Memory 16 GB DDR4 ECC SODIMM 8 GB DDR4 ECC UDIMM
Memory Module Pre-installed 16 GB (8 GB x 2) 8 GB (8 GB x 1)
Total Memory Slots 4 4
Maximum Memory Capacity 48 GB (8 GB x 2 + 16 GB x 2) 64 GB (16 GB x 4)
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 12 12
Maximum Drive Bays with Expansion Unit 36 (DX1222 x 2) 36 (RX1217 x 2)
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*
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. 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 2 4
RJ-45 10GbE LAN Port 2 2
Out-of-Band Management LAN Port 1
USB 3.2 Gen 1 Port 2 2
Expansion Port 2 2
Expansion Port Type Mini-SAS HD Infiniband
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 (x8 link) 2 x Gen3 x8 slots (x8 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 724 mm
Weight 9.8 kg 14.5 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
Notes The rail kit is sold separately
Others
System Fan 120 mm x 120 mm x 2 pcs 80 mm x 80 mm x 4 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) 50.2 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 550 watts 500 watts
550 watts*
Redundant Power Supply
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* 94.42 watts (Access)
54.33 watts (HDD Hibernation)		 142.5 watts (Access)
72.76 watts (HDD Hibernation)
British Thermal Unit 322.39 BTU/hr (Access)
185.51 BTU/hr (HDD Hibernation)		 485.93 BTU/hr (Access)
248.11 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.
  • Power supply specifications vary by hardware revision. A 500 W PSU is used in devices with serial numbers containing SZR (5th to 7th digits), while a 550 W PSU is in devices with UUR and VR1 serial numbers. For more information, refer to the Product Change Notice.
  • 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)
Relative Humidity 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • KC
  • BIS
  • UL
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty 5 Years 5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) The warranty period starts from the purchase date as stated on your purchase receipt. (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 2
  • Quick Installation Guide X 1
Optional Accessories
Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
  • 200 TB (32 GB memory required)
  • 108 TB
  • 1 PB (64 GB memory required, for RAID 6 groups only)
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number 256 256
SSD Read/Write Cache (Determining cache size)
SSD TRIM
RAID Group
Supported RAID Type
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • RAID F1
  • 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
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
  • Volumes over 108 TB require 32 GB of memory or more.
  • 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.
  • Volumes over 108 TB require 32 GB of memory or more.
  • 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.
  • When Peta Volume is enabled, validated services and packages are required. Please refer to this article for more information on limitations.
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) 600 1,300
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes
  • Connection value of this model is tested with Synology SATA SSD fully populated and up to four 10GbE 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 SSD fully populated and up to four 10GbE 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 5,120 5,120
Maximum Local Groups 512 512
Maximum Shared Folder 512 512
Maximum Shared Folder Sync Tasks 16 32
Hybrid Share
Maximum Hybrid Share Folders 15 15
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 3,000 3,000
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, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, 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
Maximum Number of Users 500 500
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 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)
Maximum Number of Users 1,300 2,800
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 512 512
Maximum of System Snapshots 16,384 16,384
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: 90 channels, 2250 FPS
  • 3M: 90 channels, 1500 FPS
  • 5M: 90 channels, 900 FPS
  • 4K: 55 channels, 550 FPS
  • 1080p: 90 channels, 2250 FPS
  • 3M: 90 channels, 1500 FPS
  • 5M: 90 channels, 900 FPS
  • 4K: 55 channels, 550 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
  • 1080p: 90 channels, 2700 FPS
  • 3M: 90 channels, 2250 FPS
  • 5M: 90 channels, 1500 FPS
  • 4K: 90 channels, 1080 FPS
  • 1080p: 90 channels, 2700 FPS
  • 3M: 90 channels, 2250 FPS
  • 5M: 90 channels, 1500 FPS
  • 4K: 90 channels, 1080 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
Maximum Number of Users 1,100 2,400
Maximum Number of Hosted Files 15,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) 15,000,000 (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 1,100 2,300
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 12 (Learn more) 16 (Learn more)
Recommended Virtual DSM Number (Licenses required) 12 (including 1 Free License) 16 (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 16 32
Hardware Specs
Hardware Specifications
CPU
CPU Model
DS3622xs+ Intel Xeon D-1531
RS3621xs+ Intel Xeon D-1541
CPU Quantity
DS3622xs+ 1
RS3621xs+ 1
CPU Core
DS3622xs+ 6
RS3621xs+ 8
CPU Architecture
DS3622xs+ 64-bit
RS3621xs+ 64-bit
CPU Frequency
DS3622xs+ 2.2 (base) / 2.7 (turbo) GHz
RS3621xs+ 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine
DS3622xs+
RS3621xs+
Memory
System Memory
DS3622xs+ 16 GB DDR4 ECC SODIMM
RS3621xs+ 8 GB DDR4 ECC UDIMM
Memory Module Pre-installed
DS3622xs+ 16 GB (8 GB x 2)
RS3621xs+ 8 GB (8 GB x 1)
Total Memory Slots
DS3622xs+ 4
RS3621xs+ 4
Maximum Memory Capacity
DS3622xs+ 48 GB (8 GB x 2 + 16 GB x 2)
RS3621xs+ 64 GB (16 GB x 4)
Notes
DS3622xs+
  • 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.
RS3621xs+
  • 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
DS3622xs+ 12
RS3621xs+ 12
Maximum Drive Bays with Expansion Unit
DS3622xs+ 36 (DX1222 x 2)
RS3621xs+ 36 (RX1217 x 2)
Drive Type (See all supported drives)
DS3622xs+
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
RS3621xs+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
DS3622xs+
RS3621xs+
Notes
DS3622xs+ 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.
RS3621xs+ 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
DS3622xs+ 2
RS3621xs+ 4
RJ-45 10GbE LAN Port
DS3622xs+ 2
RS3621xs+ 2
Out-of-Band Management LAN Port
DS3622xs+ 1
RS3621xs+
USB 3.2 Gen 1 Port
DS3622xs+ 2
RS3621xs+ 2
Expansion Port
DS3622xs+ 2
RS3621xs+ 2
Expansion Port Type
DS3622xs+ Mini-SAS HD
RS3621xs+ Infiniband
Notes
DS3622xs+ This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
RS3621xs+
PCIe
PCIe Expansion
DS3622xs+ 1 x Gen3 x8 slot (x8 link)
RS3621xs+ 2 x Gen3 x8 slots (x8 link)
Appearance
Form Factor (RU)
DS3622xs+
RS3621xs+ 2U
Size (Height x Width x Depth)
DS3622xs+ 270 mm x 300 mm x 340 mm
RS3621xs+ 88 mm x 482 mm x 724 mm
Weight
DS3622xs+ 9.8 kg
RS3621xs+ 14.5 kg
Rack Installation Support*
DS3622xs+
RS3621xs+ 4-post 19" rack (Synology Rail Kit - RKS-02)
Notes
DS3622xs+
RS3621xs+ The rail kit is sold separately
Others
System Fan
DS3622xs+ 120 mm x 120 mm x 2 pcs
RS3621xs+ 80 mm x 80 mm x 4 pcs
Fan Speed Mode
DS3622xs+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
RS3621xs+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
DS3622xs+
RS3621xs+
Power Recovery
DS3622xs+
RS3621xs+
Noise Level*
DS3622xs+ 25 dB(A)
RS3621xs+ 50.2 dB(A)
Scheduled Power On / Off
DS3622xs+
RS3621xs+
Wake on LAN / WAN
DS3622xs+
RS3621xs+
Power Supply Unit / Adapter
DS3622xs+ 550 watts
RS3621xs+ 500 watts
550 watts*
Redundant Power Supply
DS3622xs+
RS3621xs+
AC Input Power Voltage
DS3622xs+ 100V to 240V AC
RS3621xs+ 100 V to 240 V AC
Power Frequency
DS3622xs+ 50/60 Hz, Single Phase
RS3621xs+ 50/60 Hz, Single Phase
Power Consumption*
DS3622xs+ 94.42 watts (Access)
54.33 watts (HDD Hibernation)
RS3621xs+ 142.5 watts (Access)
72.76 watts (HDD Hibernation)
British Thermal Unit
DS3622xs+ 322.39 BTU/hr (Access)
185.51 BTU/hr (HDD Hibernation)
RS3621xs+ 485.93 BTU/hr (Access)
248.11 BTU/hr (HDD Hibernation)
Notes
DS3622xs+
  • 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%
RS3621xs+
  • For more information on how power consumption is measured, refer to this article.
  • Power supply specifications vary by hardware revision. A 500 W PSU is used in devices with serial numbers containing SZR (5th to 7th digits), while a 550 W PSU is in devices with UUR and VR1 serial numbers. For more information, refer to the Product Change Notice.
  • 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
DS3622xs+ 0°C to 40°C (32°F to 104°F)
RS3621xs+ 0°C to 35°C (32°F to 95°F)
Storage Temperature
DS3622xs+ -20°C to 60°C (-5°F to 140°F)
RS3621xs+ -20°C to 60°C (-5°F to 140°F)
Relative Humidity
DS3622xs+ 5% to 95% RH
RS3621xs+ 5% to 95% RH
Certification
DS3622xs+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • KC
  • BIS
  • UL
RS3621xs+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • EAC
  • CCC
  • KC
  • BIS
  • UL
Warranty
DS3622xs+ 5 Years
RS3621xs+ 5 Years
Notes
DS3622xs+ The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
RS3621xs+ The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment
DS3622xs+ RoHS Compliant
RS3621xs+ RoHS Compliant
Packaging Content
DS3622xs+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2
  • Quick Installation Guide X 1
RS3621xs+
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
DS3622xs+
RS3621xs+
Notes
DS3622xs+
RS3621xs+ All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
DS3622xs+
  • 200 TB (32 GB memory required)
  • 108 TB
RS3621xs+
  • 1 PB (64 GB memory required, for RAID 6 groups only)
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number
DS3622xs+ 256
RS3621xs+ 256
SSD Read/Write Cache (Determining cache size)
DS3622xs+
RS3621xs+
SSD TRIM
DS3622xs+
RS3621xs+
RAID Group
DS3622xs+
RS3621xs+
Supported RAID Type
DS3622xs+
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS3621xs+
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
DS3622xs+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
RS3621xs+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
DS3622xs+
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS3621xs+
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
DS3622xs+
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
RS3621xs+
  • RAID F1
  • JBOD
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
DS3622xs+
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RS3621xs+
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes
DS3622xs+
  • Volumes over 108 TB require 32 GB of memory or more.
  • 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.
RS3621xs+
  • Volumes over 108 TB require 32 GB of memory or more.
  • 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.
  • When Peta Volume is enabled, validated services and packages are required. Please refer to this article for more information on limitations.
File System
Internal Drives
DS3622xs+
  • Btrfs
  • ext4
RS3621xs+
  • Btrfs
  • ext4
External Drives
DS3622xs+
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
RS3621xs+
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
DS3622xs+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
RS3621xs+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Number of SMB Connections (FSCT-Based)
DS3622xs+ 600
RS3621xs+ 1,300
Windows Access Control List (ACL) Integration
DS3622xs+
RS3621xs+
NFS Kerberos Authentication
DS3622xs+
RS3621xs+
Notes
DS3622xs+
  • Connection value of this model is tested with Synology SATA SSD fully populated and up to four 10GbE 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
RS3621xs+
  • Connection value of this model is tested with Synology SATA SSD fully populated and up to four 10GbE 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
DS3622xs+ 5,120
RS3621xs+ 5,120
Maximum Local Groups
DS3622xs+ 512
RS3621xs+ 512
Maximum Shared Folder
DS3622xs+ 512
RS3621xs+ 512
Maximum Shared Folder Sync Tasks
DS3622xs+ 16
RS3621xs+ 32
Hybrid Share
Maximum Hybrid Share Folders
DS3622xs+ 15
RS3621xs+ 15
Hyper Backup
Folder and Package Backup
DS3622xs+
RS3621xs+
Entire System Backup
DS3622xs+
RS3621xs+
Notes
DS3622xs+ Full-system backup requires DSM 7.2 or later.
RS3621xs+ Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
DS3622xs+
RS3621xs+
Log Center
DS3622xs+
RS3621xs+
Syslog Events per Second
DS3622xs+ 3,000
RS3621xs+ 3,000
Virtualization
VMware ESXi 6.5 and VAAI
DS3622xs+
RS3621xs+
Windows Server 2016
DS3622xs+
RS3621xs+
Windows Server 2019
DS3622xs+
RS3621xs+
Windows Server 2022
DS3622xs+
RS3621xs+
Citrix Ready
DS3622xs+
RS3621xs+
OpenStack
DS3622xs+
RS3621xs+
General Specifications
Supported Protocols
DS3622xs+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
RS3621xs+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
DS3622xs+
  • Chrome
  • Firefox
  • Edge
  • Safari
RS3621xs+
  • Chrome
  • Firefox
  • Edge
  • Safari
Supported Language
DS3622xs+ 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
RS3621xs+ 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
DS3622xs+ For an updated list of supported browser versions, check the DSM Technical Specifications.
RS3621xs+ For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
DS3622xs+
RS3621xs+
Synology Chat
DS3622xs+
RS3621xs+
Maximum Number of Users
DS3622xs+ 500
RS3621xs+ 500
Notes
DS3622xs+
  • 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.
RS3621xs+
  • 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
DS3622xs+
RS3621xs+
Maximum Concurrent Download Tasks
DS3622xs+ 80
RS3621xs+ 80
SAN Manager
DS3622xs+
RS3621xs+
Maximum iSCSI Target Number
DS3622xs+ 128
RS3621xs+ 128
Maximum LUN
DS3622xs+ 256
RS3621xs+ 256
LUN Clone/Snapshot, Windows ODX
DS3622xs+
RS3621xs+
Synology MailPlus / MailPlus Server
DS3622xs+
RS3621xs+
Free Email Accounts
DS3622xs+ 5 (Additional accounts require purchase of licenses)
RS3621xs+ 5 (Additional accounts require purchase of licenses)
Maximum Number of Users
DS3622xs+ 1,300
RS3621xs+ 2,800
Notes
DS3622xs+
  • 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).
RS3621xs+
  • 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
DS3622xs+
RS3621xs+
DLNA Compliance
DS3622xs+
RS3621xs+
Synology Photos
DS3622xs+
RS3621xs+
Facial Recognition
DS3622xs+
RS3621xs+
Object Recognition
DS3622xs+
RS3621xs+
Snapshot Replication
DS3622xs+
RS3621xs+
Maximum Snapshots per Shared Folder
DS3622xs+ 512
RS3621xs+ 512
Maximum of System Snapshots
DS3622xs+ 16,384
RS3621xs+ 16,384
Surveillance Station
DS3622xs+
RS3621xs+
Default Licenses
DS3622xs+ 2 (Additional cameras require purchase of licenses)
RS3621xs+ 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
DS3622xs+
  • 1080p: 90 channels, 2250 FPS
  • 3M: 90 channels, 1500 FPS
  • 5M: 90 channels, 900 FPS
  • 4K: 55 channels, 550 FPS
RS3621xs+
  • 1080p: 90 channels, 2250 FPS
  • 3M: 90 channels, 1500 FPS
  • 5M: 90 channels, 900 FPS
  • 4K: 55 channels, 550 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
DS3622xs+
  • 1080p: 90 channels, 2700 FPS
  • 3M: 90 channels, 2250 FPS
  • 5M: 90 channels, 1500 FPS
  • 4K: 90 channels, 1080 FPS
RS3621xs+
  • 1080p: 90 channels, 2700 FPS
  • 3M: 90 channels, 2250 FPS
  • 5M: 90 channels, 1500 FPS
  • 4K: 90 channels, 1080 FPS
Notes
DS3622xs+
  • 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.
RS3621xs+
  • 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
DS3622xs+
RS3621xs+
Maximum Number of Users
DS3622xs+ 1,100
RS3621xs+ 2,400
Maximum Number of Hosted Files
DS3622xs+ 15,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
RS3621xs+ 15,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Notes
DS3622xs+
  • 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.
RS3621xs+
  • 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
DS3622xs+
RS3621xs+
Maximum Number of Users
DS3622xs+ 1,100
RS3621xs+ 2,300
Notes
DS3622xs+
  • 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
RS3621xs+
  • 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
DS3622xs+
RS3621xs+
Recommended Virtual Machine Instances
DS3622xs+ 12 (Learn more)
RS3621xs+ 16 (Learn more)
Recommended Virtual DSM Number (Licenses required)
DS3622xs+ 12 (including 1 Free License)
RS3621xs+ 16 (including 1 Free License)
Notes
DS3622xs+ The specifications vary depending on system configuration and memory size.
RS3621xs+ The specifications vary depending on system configuration and memory size.
VPN Server
DS3622xs+
RS3621xs+
Maximum Connections
DS3622xs+ 16
RS3621xs+ 32