Comparison results

Highlight Differences

RS422+

RS822+

Hardware Specifications
CPU
CPU Model	AMD Ryzen R1600	AMD Ryzen V1500B	Intel Xeon D-1527
CPU Quantity	1	1	1
CPU Architecture	64-bit	64-bit	64-bit
CPU Frequency	2-core 2.6 (base) / 3.1 (turbo) GHz	4-core 2.2 GHz	4-core 2.2 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine
Memory
System Memory	2 GB DDR4 ECC	2 GB DDR4 ECC SODIMM	8 GB DDR4 ECC UDIMM
Memory Module Pre-installed		2 GB (2 GB x 1)	8 GB (8 GB x 1)
Total Memory Slots	0	2	4
Maximum Memory Capacity		32 GB (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.	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 more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.	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 more information on the recommended memory configurations, visit here.
Storage
Drive Bays	4	4	4
Maximum Drive Bays with Expansion Unit		8 (RX418 x 1)	16 (RX1217/RX1217RP x 1)
M.2 Drive Slots			2 (NVMe & SATA)
Compatible Drive Type* (See all supported drives)	3.5" SATA HDD 2.5" SATA SSD	3.5" SATA HDD 2.5" SATA SSD	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe & SATA SSD
Hot Swappable Drive*
Notes	"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.	"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)	The hot swappable drive feature is not supported by M.2 SSD slots. "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
External Ports
RJ-45 1GbE LAN Port	2 (with Link Aggregation / Failover support)	4 (with Link Aggregation / Failover support)	4 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port*	1	2	2
eSATA Port		1
Expansion Port			1
Notes	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.	The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
PCIe
PCIe Expansion	1 x Gen3 x2 network upgrade slot	1 x Gen3 x8 slot (x4 link)	1 x Gen3 x8 slot (x8 link)
Appearance
Form Factor (RU)	1U	1U	1U
Size (Height x Width x Depth)	44 mm x 478 mm x 327.5 mm	RS822+ : 44 mm x 480 mm x 492.6 mm RS822RP+ : 44 mm x 480 mm x 518.6 mm	44 mm x 480 mm x 518.6 mm
Weight	4.38 kg	RS822+ : 6.4 kg RS822RP+ : 8.0 kg	8.16 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)	4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
Notes	The rail kit is sold separately	The rail kit is sold separately	The rail kit is sold separately
Others
System Fan	40 mm x 40 mm x 3 pcs	RS822+ : 40 mm x 40 mm x 3 pcs RS822RP+ : 40 mm x 40 mm x 2 pcs	40 mm x 40 mm x 2 pcs
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode	Full-Speed Mode Cool Mode Quiet Mode	Full-Speed Mode Cool Mode Quiet Mode
Power Recovery
Noise Level*	28.5 dB(A)	RS822+ : 27.4 dB(A) RS822RP+ : 38.8 dB(A)	39.3 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter	100 W	150 W	150 W
Redundant Power Supply		RS822+ : RS822RP+ :
AC Input Power Voltage	100V to 240V AC	100 V to 240 V AC	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase	50/60 Hz, Single Phase	50/60 Hz, Single Phase
Power Consumption	37.93 W (Access) 13.43 W (HDD Hibernation)	47.69 W (Access) 16.7 W (HDD Hibernation)	68.68 W (Access) 34.78 W (HDD Hibernation)
British Thermal Unit	129.42 BTU/hr (Access) 45.83 BTU/hr (HDD Hibernation)	162.83 BTU/hr (Access) 57.02 BTU/hr (HDD Hibernation)	234.35 BTU/hr (Access) 118.67 BTU/hr (HDD Hibernation)
Notes	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 stae. Two G.R.A.S. Type 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%	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 stae. Two G.R.A.S. Type 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%	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 35°C (32°F to 95°F)	0°C to 35°C (32°F to 95°F)	5°C to 35°C (40°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)	-20°C to 60°C (-5°F to 140°F)
Relative Humidity	5% to 95% RH	5% to 95% RH	5% to 95% RH
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC	FCC CE BSMI VCCI RCM UKCA EAC CCC KC UL	EAC CCC KC FCC CE BSMI VCCI RCM
Warranty	3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus	3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus	5 Years
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. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.	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. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment	RoHS Compliant	RoHS Compliant	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC 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 RS822RP+ : Main Unit X 1 Accessory Pack X 1 AC Power Cord 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	Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series 10GbE Network Upgrade Module: E10G22-T1-Mini Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*	DDR4 ECC SODIMM: D4ES02-4G/D4ES02-8G/D4ES01-16G Expansion Units: RX418 Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1 M.2 SSD Adapter Card: M2D20/M2D18 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*	DDR4 ECC UDIMM: D4EC-2666-8G/D4EC-2666-16G Expansion Units: RX1217/RX1217RP Enterprise Series 3.5" SATA HDD: HAT5300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*
Notes	Certain items may not be available in your location. Please contact your local distributors for more information.	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. All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

DSM Specifications
Storage Management
Maximum Single Volume Size	108 TB	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	64	64	256
SSD Read / Write Cache (White Paper)
SSD TRIM
RAID Group
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 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	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	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10
Volume Expansion by Adding a HDD	Synology Hybrid RAID JBOD RAID 5	Synology Hybrid RAID JBOD RAID 5 RAID 6 (with Expansion Unit)	RAID F1 JBOD RAID 5 RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 (with Expansion Unit) RAID 10 (with Expansion Unit)	RAID F1 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. 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.	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. Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration. Volumes over 108 TB require 32 GB of memory or more.
File System
Internal Drives	Btrfs ext4	Btrfs ext4	Btrfs ext4
External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
Notes			exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
File Services
File Protocol	SMB AFP NFS FTP WebDAV Rsync	SMB AFP NFS FTP WebDAV Rsync	SMB AFP NFS FTP WebDAV Rsync
Maximum Concurrent SMB/AFP/FTP Connections	500	500	2,000
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)		2,000	10,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes	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.	Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM. During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration. The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
Account & Shared Folder
Maximum Local User Accounts	2,048	2,048	16,000
Maximum Local Groups	256	256	512
Maximum Shared Folder	512	512	512
Maximum Shared Folder Sync Tasks	8	16	32
Hybrid Share
Maximum Hybrid Share Folders	10	10	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.	Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
Log Center
Syslog Events per Second	800	800	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, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV	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, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers	Chrome Firefox Edge Safari	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	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.	For an updated list of supported browser versions, check the DSM Technical Specifications.

Add-on Packages view the complete package list
Antivirus by McAfee (Trial)
Central Management System
Synology Chat
Suggested Maximum Users			4,000
Suggested Concurrent Users	100	150	400
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. When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.	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. When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.	When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.
Download Station
Maximum Concurrent Download Tasks	80	80	80
SAN Manager
Maximum iSCSI Target Number	128	128	256
Maximum LUN	256	256	512
LUN Clone/Snapshot, Windows ODX
Notes			iSCSI Manager has been renamed to SAN Manager in DSM 7.0.
Synology MailPlus / MailPlus Server
Free Email Accounts		5 (Additional accounts require purchase of licenses)	5 (Additional accounts require purchase of licenses)
Suggested Maximum Users		750	2,250
Suggested Concurrent Users		150	450
Maximum Server Performance		1,484,000 emails per day, approx. 45GB	3,363,000 emails per day, approx. 102.6 GB
Notes		Models with more than 4 bays were installed with two SSDs for SSD cache. For tested models with expandable memory, the maximum amount of RAM was installed. 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 more than 4 bays were installed with two SSDs for SSD cache. For tested models with expandable memory, the maximum amount of RAM was installed. 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).
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	1,024
Maximum of System Snapshots	65,536	65,536	65,536
Surveillance Station
Default Licenses	2 (Additional cameras require purchase of licenses)	2 (Additional cameras require purchase of licenses)	2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)	720p: 40 channels, 1200 FPS 1080p: 40 channels, 800 FPS 3M: 35 channels, 350 FPS 5M: 28 channels, 280 FPS 4K: 17 channels, 170 FPS	720p: 40 channels, 1200 FPS 1080p: 40 channels, 800 FPS 3M: 35 channels, 350 FPS 5M: 28 channels, 280 FPS 4K: 17 channels, 170 FPS	720p: 75 channels, 2250 FPS 1080p: 75 channels, 1050 FPS 3M: 60 channels, 600 FPS 5M: 40 channels, 400 FPS 4K: 28 channels, 280 FPS
Maximum IP Cameras and Total FPS (H.265)	720p: 40 channels, 1200 FPS 1080p: 40 channels, 1200 FPS 3M: 40 channels, 600 FPS 5M: 40 channels, 480 FPS 4K: 20 channels, 200 FPS	720p: 40 channels, 1200 FPS 1080p: 40 channels, 1200 FPS 3M: 40 channels, 600 FPS 5M: 40 channels, 480 FPS 4K: 20 channels, 200 FPS	720p: 75 channels, 2250 FPS 1080p: 75 channels, 2250 FPS 3M: 75 channels, 1125 FPS 5M: 70 channels, 700 FPS 4K: 49 channels, 490 FPS
Notes	Performance figures are obtained from testing conducted with the device fully populated with drives 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.	Performance figures are obtained from testing conducted with the device fully populated with drives 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.	Performance figures are obtained from testing conducted with the device fully populated with drives 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.
Synology Drive
Recommended Number of Concurrent Sync Clients	350 (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)	1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files	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)	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. 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. For tested models with expandable memory, the maximum amount of RAM was installed. 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. For tested models with expandable memory, the maximum amount of RAM was installed. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Suggested Maximum Users	3,000	4,500	7,000
Suggested Concurrent Users	1,200	1,800	2,800
Notes	Multiple files were opened for testing and each file was edited by 30 users simultaneously. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM	Multiple files were opened for testing and each file was edited by 30 users simultaneously. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM	Multiple files were opened for testing and each file was edited by 30 users simultaneously. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Video Station
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	60

Hardware Specs

Hardware Specifications

CPU

CPU Model

RS422+	AMD Ryzen R1600
RS822+	AMD Ryzen V1500B
RS1619xs+	Intel Xeon D-1527

CPU Quantity

RS422+	1
RS822+	1
RS1619xs+	1

CPU Architecture

RS422+	64-bit
RS822+	64-bit
RS1619xs+	64-bit

CPU Frequency

RS422+	2-core 2.6 (base) / 3.1 (turbo) GHz
RS822+	4-core 2.2 GHz
RS1619xs+	4-core 2.2 (base) / 2.7 (turbo) GHz

Hardware Encryption Engine

RS422+
RS822+
RS1619xs+

Memory

System Memory

RS422+	2 GB DDR4 ECC
RS822+	2 GB DDR4 ECC SODIMM
RS1619xs+	8 GB DDR4 ECC UDIMM

Memory Module Pre-installed

RS422+
RS822+	2 GB (2 GB x 1)
RS1619xs+	8 GB (8 GB x 1)

Total Memory Slots

RS422+	0
RS822+	2
RS1619xs+	4

Maximum Memory Capacity

RS422+
RS822+	32 GB (16 GB x 2)
RS1619xs+	64 GB (16 GB x 4)

Notes

RS422+	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.
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 more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
RS1619xs+	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 more information on the recommended memory configurations, visit here.

Storage

Drive Bays

RS422+	4
RS822+	4
RS1619xs+	4

Maximum Drive Bays with Expansion Unit

RS422+
RS822+	8 (RX418 x 1)
RS1619xs+	16 (RX1217/RX1217RP x 1)

M.2 Drive Slots

RS422+
RS822+
RS1619xs+	2 (NVMe & SATA)

Compatible Drive Type* (See all supported drives)

RS422+	3.5" SATA HDD 2.5" SATA SSD
RS822+	3.5" SATA HDD 2.5" SATA SSD
RS1619xs+	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD M.2 2280 NVMe & SATA SSD

Hot Swappable Drive*

RS422+
RS822+
RS1619xs+

Notes

RS422+	"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
RS822+	"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)
RS1619xs+	The hot swappable drive feature is not supported by M.2 SSD slots. "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.

External Ports

RJ-45 1GbE LAN Port

RS422+	2 (with Link Aggregation / Failover support)
RS822+	4 (with Link Aggregation / Failover support)
RS1619xs+	4 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port*

RS422+	1
RS822+	2
RS1619xs+	2

eSATA Port

RS422+
RS822+	1
RS1619xs+

Expansion Port

RS422+
RS822+
RS1619xs+	1

Notes

RS422+	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
RS822+	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
RS1619xs+	The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

PCIe

PCIe Expansion

RS422+	1 x Gen3 x2 network upgrade slot
RS822+	1 x Gen3 x8 slot (x4 link)
RS1619xs+	1 x Gen3 x8 slot (x8 link)

Appearance

Form Factor (RU)

RS422+	1U
RS822+	1U
RS1619xs+	1U

Size (Height x Width x Depth)

RS422+	44 mm x 478 mm x 327.5 mm
RS822+	RS822+ : 44 mm x 480 mm x 492.6 mm RS822RP+ : 44 mm x 480 mm x 518.6 mm
RS1619xs+	44 mm x 480 mm x 518.6 mm

Weight

RS422+	4.38 kg
RS822+	RS822+ : 6.4 kg RS822RP+ : 8.0 kg
RS1619xs+	8.16 kg

Rack Installation Support*

RS422+	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)
RS1619xs+	4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)

Notes

RS422+	The rail kit is sold separately
RS822+	The rail kit is sold separately
RS1619xs+	The rail kit is sold separately

Others

System Fan

RS422+	40 mm x 40 mm x 3 pcs
RS822+	RS822+ : 40 mm x 40 mm x 3 pcs RS822RP+ : 40 mm x 40 mm x 2 pcs
RS1619xs+	40 mm x 40 mm x 2 pcs

Fan Speed Mode

RS422+	Full-Speed Mode Cool Mode Quiet Mode
RS822+	Full-Speed Mode Cool Mode Quiet Mode
RS1619xs+	Full-Speed Mode Cool Mode Quiet Mode

Power Recovery

RS422+
RS822+
RS1619xs+

Noise Level*

RS422+	28.5 dB(A)
RS822+	RS822+ : 27.4 dB(A) RS822RP+ : 38.8 dB(A)
RS1619xs+	39.3 dB(A)

Scheduled Power On / Off

RS422+
RS822+
RS1619xs+

Wake on LAN / WAN

RS422+
RS822+
RS1619xs+

Power Supply Unit / Adapter

RS422+	100 W
RS822+	150 W
RS1619xs+	150 W

Redundant Power Supply

RS422+
RS822+	RS822+ : RS822RP+ :
RS1619xs+

AC Input Power Voltage

RS422+	100V to 240V AC
RS822+	100 V to 240 V AC
RS1619xs+	100V to 240V AC

Power Frequency

RS422+	50/60 Hz, Single Phase
RS822+	50/60 Hz, Single Phase
RS1619xs+	50/60 Hz, Single Phase

Power Consumption

RS422+	37.93 W (Access) 13.43 W (HDD Hibernation)
RS822+	47.69 W (Access) 16.7 W (HDD Hibernation)
RS1619xs+	68.68 W (Access) 34.78 W (HDD Hibernation)

British Thermal Unit

RS422+	129.42 BTU/hr (Access) 45.83 BTU/hr (HDD Hibernation)
RS822+	162.83 BTU/hr (Access) 57.02 BTU/hr (HDD Hibernation)
RS1619xs+	234.35 BTU/hr (Access) 118.67 BTU/hr (HDD Hibernation)

Notes

RS422+	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 stae. Two G.R.A.S. Type 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%
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 stae. Two G.R.A.S. Type 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%
RS1619xs+	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

RS422+	0°C to 35°C (32°F to 95°F)
RS822+	0°C to 35°C (32°F to 95°F)
RS1619xs+	5°C to 35°C (40°F to 95°F)

Storage Temperature

RS422+	-20°C to 60°C (-5°F to 140°F)
RS822+	-20°C to 60°C (-5°F to 140°F)
RS1619xs+	-20°C to 60°C (-5°F to 140°F)

Relative Humidity

RS422+	5% to 95% RH
RS822+	5% to 95% RH
RS1619xs+	5% to 95% RH

Certification

RS422+	FCC CE BSMI VCCI RCM UKCA EAC CCC KC
RS822+	FCC CE BSMI VCCI RCM UKCA EAC CCC KC UL
RS1619xs+	EAC CCC KC FCC CE BSMI VCCI RCM

Warranty

RS422+	3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus
RS822+	3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus
RS1619xs+	5 Years

Notes

RS422+	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. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.
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. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.
RS1619xs+	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment

RS422+	RoHS Compliant
RS822+	RoHS Compliant
RS1619xs+	RoHS Compliant

Packaging Content

RS422+

Main Unit X 1
Accessory Pack X 1
AC Power Cord X 1
Quick Installation Guide X 1

RS822+

RS822+ :

Main Unit X 1
Accessory Pack X 1
AC Power Cord X 1
Quick Installation Guide X 1

RS822RP+ :

Main Unit X 1
Accessory Pack X 1
AC Power Cord X 2
Quick Installation Guide X 1

RS1619xs+

Main Unit X 1
Accessory Pack X 1
AC Power Cord X 2
Quick Installation Guide X 1

Optional Accessories

RS422+	Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series 10GbE Network Upgrade Module: E10G22-T1-Mini Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*
RS822+	DDR4 ECC SODIMM: D4ES02-4G/D4ES02-8G/D4ES01-16G Expansion Units: RX418 Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1 M.2 SSD Adapter Card: M2D20/M2D18 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*
RS1619xs+	DDR4 ECC UDIMM: D4EC-2666-8G/D4EC-2666-16G Expansion Units: RX1217/RX1217RP Enterprise Series 3.5" SATA HDD: HAT5300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series 25GbE Network Interface Card: E25G30-F2 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1 Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*

Notes

RS422+	Certain items may not be available in your location. Please contact your local distributors for more information.
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. All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
RS1619xs+	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.

Software Specs

DSM Specifications

Storage Management

Maximum Single Volume Size

RS422+	108 TB
RS822+	108 TB
RS1619xs+	1 PB (64 GB memory required, for RAID 6 groups only) 200 TB (32 GB memory required) 108 TB

Maximum Internal Volume Number

SSD Read / Write Cache (White Paper)

RS422+
RS822+
RS1619xs+

SSD TRIM

RS422+
RS822+
RS1619xs+

RAID Group

RS422+
RS822+
RS1619xs+

Supported RAID Type

RS422+	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
RS1619xs+	RAID F1 Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10

RAID Migration

RS422+	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
RS1619xs+	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6

Volume Expansion with Larger HDDs

RS422+	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
RS822+	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
RS1619xs+	RAID F1 RAID 1 RAID 5 RAID 6 RAID 10

Volume Expansion by Adding a HDD

RS422+	Synology Hybrid RAID JBOD RAID 5
RS822+	Synology Hybrid RAID JBOD RAID 5 RAID 6 (with Expansion Unit)
RS1619xs+	RAID F1 JBOD RAID 5 RAID 6 (with Expansion Unit)

Global Hot Spare Supported RAID Type

RS422+	Synology Hybrid RAID RAID 1 RAID 5
RS822+	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 (with Expansion Unit) RAID 10 (with Expansion Unit)
RS1619xs+	RAID F1 RAID 1 RAID 5 RAID 6 (with Expansion Unit) RAID 10 (with Expansion Unit)

Notes

RS422+	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. Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
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.
RS1619xs+	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. Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration. Volumes over 108 TB require 32 GB of memory or more.

File System

Internal Drives

RS422+	Btrfs ext4
RS822+	Btrfs ext4
RS1619xs+	Btrfs ext4

External Drives

RS422+	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
RS822+	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
RS1619xs+	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT

Notes

RS422+
RS822+
RS1619xs+	exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.

File Services

File Protocol

RS422+	SMB AFP NFS FTP WebDAV Rsync
RS822+	SMB AFP NFS FTP WebDAV Rsync
RS1619xs+	SMB AFP NFS FTP WebDAV Rsync

Maximum Concurrent SMB/AFP/FTP Connections

Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)

RS422+
RS822+	2,000
RS1619xs+	10,000

Windows Access Control List (ACL) Integration

RS422+
RS822+
RS1619xs+

NFS Kerberos Authentication

RS422+
RS822+
RS1619xs+

Notes

RS422+	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.
RS1619xs+	Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM. During testing, the maximum number of SSDs supported by this model is installed in a RAID 5 configuration. The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.

Account & Shared Folder

Maximum Local User Accounts

Maximum Local Groups

Maximum Shared Folder

Maximum Shared Folder Sync Tasks

Hybrid Share

Maximum Hybrid Share Folders

Hyper Backup

Folder and Package Backup

RS422+
RS822+
RS1619xs+

Entire System Backup

RS422+
RS822+
RS1619xs+

Notes

RS422+	Full-system backup requires DSM 7.2 or later.
RS822+	Full-system backup requires DSM 7.2 or later.
RS1619xs+	Full-system backup requires DSM 7.2 or later.

High Availability

Synology High Availability

RS422+
RS822+
RS1619xs+

Log Center

RS422+
RS822+
RS1619xs+

Syslog Events per Second

Virtualization

VMware ESXi 6.5 and VAAI

RS422+
RS822+
RS1619xs+

Windows Server 2016

RS422+
RS822+
RS1619xs+

Windows Server 2019

RS422+
RS822+
RS1619xs+

Windows Server 2022

RS422+
RS822+
RS1619xs+

Citrix Ready

RS422+
RS822+
RS1619xs+

OpenStack

RS422+
RS822+
RS1619xs+

General Specifications

Supported Protocols

RS422+	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
RS1619xs+	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV

Supported Browsers

RS422+	Chrome Firefox Edge Safari
RS822+	Chrome Firefox Edge Safari
RS1619xs+	Chrome Firefox Edge Safari

Supported Language

RS422+	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
RS1619xs+	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

RS422+	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.
RS1619xs+	For an updated list of supported browser versions, check the DSM Technical Specifications.

Add-on Packages view the complete package list

Antivirus by McAfee (Trial)

RS422+
RS822+
RS1619xs+

Central Management System

RS422+
RS822+
RS1619xs+

Synology Chat

RS422+
RS822+
RS1619xs+

Suggested Maximum Users

RS422+
RS822+
RS1619xs+	4,000

Suggested Concurrent Users

Notes

RS422+	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. When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.
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. When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.
RS1619xs+	When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.

Download Station

RS422+
RS822+
RS1619xs+

Maximum Concurrent Download Tasks

SAN Manager

RS422+
RS822+
RS1619xs+

Maximum iSCSI Target Number

Maximum LUN

LUN Clone/Snapshot, Windows ODX

RS422+
RS822+
RS1619xs+

Notes

RS422+
RS822+
RS1619xs+	iSCSI Manager has been renamed to SAN Manager in DSM 7.0.

Synology MailPlus / MailPlus Server

RS422+
RS822+
RS1619xs+

Free Email Accounts

RS422+
RS822+	5 (Additional accounts require purchase of licenses)
RS1619xs+	5 (Additional accounts require purchase of licenses)

Suggested Maximum Users

RS422+
RS822+	750
RS1619xs+	2,250

Suggested Concurrent Users

RS422+
RS822+	150
RS1619xs+	450

Maximum Server Performance

RS422+
RS822+	1,484,000 emails per day, approx. 45GB
RS1619xs+	3,363,000 emails per day, approx. 102.6 GB

Notes

RS422+
RS822+	Models with more than 4 bays were installed with two SSDs for SSD cache. For tested models with expandable memory, the maximum amount of RAM was installed. 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).
RS1619xs+	Models with more than 4 bays were installed with two SSDs for SSD cache. For tested models with expandable memory, the maximum amount of RAM was installed. 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).

Media Server

RS422+
RS822+
RS1619xs+

DLNA Compliance

RS422+
RS822+
RS1619xs+

Synology Photos

RS422+
RS822+
RS1619xs+

Facial Recognition

RS422+
RS822+
RS1619xs+

Object Recognition

RS422+
RS822+
RS1619xs+

Notes

RS422+
RS822+	Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
RS1619xs+

Snapshot Replication

RS422+
RS822+
RS1619xs+

Maximum Snapshots per Shared Folder

Maximum of System Snapshots

Surveillance Station

RS422+
RS822+
RS1619xs+

Default Licenses

RS422+	2 (Additional cameras require purchase of licenses)
RS822+	2 (Additional cameras require purchase of licenses)
RS1619xs+	2 (Additional cameras require purchase of licenses)

Maximum IP Cameras and Total FPS (H.264)

RS422+	720p: 40 channels, 1200 FPS 1080p: 40 channels, 800 FPS 3M: 35 channels, 350 FPS 5M: 28 channels, 280 FPS 4K: 17 channels, 170 FPS
RS822+	720p: 40 channels, 1200 FPS 1080p: 40 channels, 800 FPS 3M: 35 channels, 350 FPS 5M: 28 channels, 280 FPS 4K: 17 channels, 170 FPS
RS1619xs+	720p: 75 channels, 2250 FPS 1080p: 75 channels, 1050 FPS 3M: 60 channels, 600 FPS 5M: 40 channels, 400 FPS 4K: 28 channels, 280 FPS

Maximum IP Cameras and Total FPS (H.265)

RS422+	720p: 40 channels, 1200 FPS 1080p: 40 channels, 1200 FPS 3M: 40 channels, 600 FPS 5M: 40 channels, 480 FPS 4K: 20 channels, 200 FPS
RS822+	720p: 40 channels, 1200 FPS 1080p: 40 channels, 1200 FPS 3M: 40 channels, 600 FPS 5M: 40 channels, 480 FPS 4K: 20 channels, 200 FPS
RS1619xs+	720p: 75 channels, 2250 FPS 1080p: 75 channels, 2250 FPS 3M: 75 channels, 1125 FPS 5M: 70 channels, 700 FPS 4K: 49 channels, 490 FPS

Notes

RS422+	Performance figures are obtained from testing conducted with the device fully populated with drives 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.
RS822+	Performance figures are obtained from testing conducted with the device fully populated with drives 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.
RS1619xs+	Performance figures are obtained from testing conducted with the device fully populated with drives 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.

Synology Drive

RS422+
RS822+
RS1619xs+

Recommended Number of Concurrent Sync Clients

RS422+	350 (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)
RS1619xs+	1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached)

Recommended Number of Hosted Files

RS422+	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)
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)
RS1619xs+	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

RS422+	Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Utilizing SSD cache can significantly improve performance. 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. For tested models with expandable memory, the maximum amount of RAM was installed. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
RS1619xs+	Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Utilizing SSD cache can significantly improve performance. For tested models with expandable memory, the maximum amount of RAM was installed. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.

Synology Office

RS422+
RS822+
RS1619xs+

Suggested Maximum Users

Suggested Concurrent Users

Notes

RS422+	Multiple files were opened for testing and each file was edited by 30 users simultaneously. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
RS822+	Multiple files were opened for testing and each file was edited by 30 users simultaneously. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
RS1619xs+	Multiple files were opened for testing and each file was edited by 30 users simultaneously. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM

Video Station

RS422+
RS822+
RS1619xs+

Virtual Machine Manager

RS422+
RS822+
RS1619xs+

Recommended Virtual Machine Instances

RS422+
RS822+	8 (Learn more)
RS1619xs+	8 (Learn more)

Recommended Virtual DSM Number (Licenses required)

RS422+
RS822+	8 (including 1 Free License)
RS1619xs+	8 (including 1 Free License)

Notes

RS422+
RS822+	The specifications vary depending on system configuration and memory size.
RS1619xs+	The specifications vary depending on system configuration and memory size.

VPN Server

RS422+
RS822+
RS1619xs+

Maximum Connections