RS422+ vs RS819 vs RS820+

Last updated on 07 Jun 2022 📧 Subscribe

RS422+ vs RS819 vs RS820+

Hardware Specifications
CPU
CPU Model AMD Ryzen R1600  (VM Friendly)(

Benchmark score

898 Single-Core Score
4910 Multi-Core Score)

 Realtek RTD1296  (Multimedia Friendly)(

Benchmark score

255 Single-Core Score
895 Multi-Core Score)

 Intel Atom C3538  ( Backups, file server friendly

Benchmark score

255 Single-Core Score
895 Multi-Core Score)
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 1.4 GHz 4-core 2.1 GHz
Hardware Encryption Engine
Hardware Encryption Engine (AES-NI)
Memory
System Memory 2 GB DDR4 ECC 2 GB DDR4 non-ECC 2 GB DDR4 non-ECC
Total Memory Slots 1
Maximum Memory Capacity 18 GB (2GB + 16 GB)
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.
  • 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.
Storage
Drive Bays 4 4 4
Maximum Drive Bays with Expansion Unit 8 (RX418 x 1) 8 (RX418 x 1)
Compatible Drive Type* (See all supported drives)
  • 3.5″ SATA HDD
  • 2.5″ SATA SSD
  • 3.5″ SATA HDD
  • 2.5″ SATA HDD
  • 2.5″ SATA SSD
  • 3.5″ SATA HDD
  • 2.5″ SATA HDD
  • 2.5″ SATA SSD
Hot Swappable Drive
Notes “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. “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) 2 (with Link Aggregation / Failover support) 4 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port* 1 2 2
eSATA Port 1 1
Notes 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. 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 (black, x4 link)
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. 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.
Appearance
Form Factor (RU) 1U 1U 1U
Size (Height x Width x Depth) 44 mm x 478 mm x 327.5 mm 44 mm x 478 mm x 327.5 mm RS820+ : 44 mm x 480 mm x 492.6 mm
RS820RP+ : 44 mm x 480 mm x 518.6 mm
Weight 4.38 kg 4.34 kg RS820+ : 6.4 kg
RS820RP+ : 7.96 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)
  • 2-post 19″ rack (direct mounting)
 4-post 19″ rack (Synology Rail Kit – RKM114/RKS-02)
Notes The rail kit is sold separately The rail kit is sold separately The rail kit is sold separately
Others
System Fan 40 mm x 40 mm x 3 pcs 40 mm x 40 mm x 3 pcs RS820+ : 40 mm x 40 mm x 3 pcs
RS820RP+ : 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) 28.9 dB(A) RS820+ : 27 dB(A)
RS820RP+ : 39.9 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 100 W 100 W 150 W
Redundant Power Supply RS820+ : 
RS820RP+ : 
AC Input Power Voltage 100V to 240V AC 100V to 240V 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)		 28.31 W (Access)
10.1 W (HDD Hibernation)		 RS820+ : 37.94 W (Access)
20.96 W (HDD Hibernation)
RS820RP+ : 38.88 W (Access)
22.17 W (HDD Hibernation)
British Thermal Unit 129.42 BTU/hr (Access)
45.83 BTU/hr (HDD Hibernation)		 96.6 BTU/hr (Access)
34.46 BTU/hr (HDD Hibernation)		 RS820+ : 129.54 BTU/hr (Access)
71.57 BTU/hr (HDD Hibernation)
RS820RP+ : 132.75 BTU/hr (Access)
75.70 BTU/hr (HDD Hibernation)
Notes For more information on how power consumption is measured, refer to this acrticle. Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • 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) 5°C to 35°C (40°F to 95°F) 0°C to 35°C (32°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F) -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
  • EAC
  • CCC
  • KC
  • VCCI
  • RCM
  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • KC
  • VCCI
  • RCM
Warranty 3-year hardware warranty, extendable to 5-year coverage – EW201 3-year hardware warranty, extendable to 5-year coverage – EW201 3-year hardware warranty, extendable to 5-year coverage – EW202
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) 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
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Quick Installation Guide X 1
 RS820+ :
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Quick Installation Guide X 1

RS820RP+ :

  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
  • Expansion Units: RX418
  • Rail Kit Sliding: RKS-02
  • Rail Kit Mounted: RKM114*
  • VisualStation: VS360HD
  • Surveillance Device License Pack
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.
  • 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.
  • This model does not support the ECC feature, regardless of whether the expansion memory is ECC or non-ECC.
DSM Specifications
Storage Management
Maximum Single Volume Size* 108 TB 108 TB 108 TB
Maximum Internal Volume Number 64 64 64
SSD Read / Write Cache (White Paper)
SSD TRIM
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
  • 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
  • Synology Hybrid RAID
  • 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 10 (with Expansion Unit)
  • Synology Hybrid RAID
  • 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)
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
  • Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
  • The maximum single volume size is not directly related to the maximum raw capacity. (Learn more)
  • Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
  • Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
File Services
File Protocol SMB/AFP/NFS/FTP/WebDAV SMB/AFP/NFS/FTP/WebDAV SMB/AFP/NFS/FTP/WebDAV
Maximum Concurrent SMB/AFP/FTP Connections 500 200 500
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) 2,000
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. The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
Account & Shared Folder
Maximum Local User Accounts 2,048 2,048 2,048
Maximum Local Groups 256 256 256
Maximum Shared Folder 512 256 512
Maximum Shared Folder Sync Tasks 8 4 8
Hybrid Share
Hybrid Share Folder Number 10 5 10
Notes For more supported details, please check this article. For more supported details, please check this article. For more supported details, please check this article.
High Availability
Synology High Availability
Log Center
Syslog Events per Second 800 400 800
Virtualization
VMware vSphere with VAAI
Windows Server 2016
Windows Server 2019
Citrix Ready
OpenStack
General Specifications
Networking 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, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Safari
  • Google Chrome
  • Firefox
  • Microsoft Edge
  • Safari
  • Google Chrome
  • Firefox
  • Microsoft 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
Maximum Users 500 1,500
Maximum Number of Concurrent Users 100 150
Notes
  • Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds.
  • 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. When applicable, systems are tested configured with maximum memory and set to allow the maximum number of connections.
Document Viewer
Download Station
Maximum Concurrent Download Tasks 80 80 80
SAN Manager
Maximum iSCSI Target Number 128 128 128
Maximum LUN 256 256 256
LUN Clone/Snapshot, Windows ODX
Notes iSCSI Manager has been renamed to SAN Manager in DSM 7.0. iSCSI Manager has been renamed to SAN Manager in DSM 7.0.
Synology MailPlus / MailPlus Server
Free Email Accounts 5 (Licenses required for additional accounts)
Maximum Number of Concurrent Users 150
Maximum Server Performance 1,484,000 emails per day, approx. 45GB
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).
Media Server
DLNA Compliance
Synology Photos
Facial Recognition
Notes Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article. Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article.
Snapshot Replication
Maximum Snapshots per Shared Folder 1,024 256 1,024
Maximum of System Snapshots 65,536 4,096 65,536
Surveillance Station
Maximum IP cam (Licenses required) 40 (including 2 Free License) (see all supported IP cameras) 30 (including 2 Free License) (see all supported IP cameras) 40 (including 2 Free License) (see all supported IP cameras)
Total FPS (H.264) 1200 FPS @ 720p (1280×720)
800 FPS @ 1080p (1920×1080)
350 FPS @ 3M (2048×1536)
280 FPS @ 5M (2591×1944)
170 FPS @ 4K (3840×2160)		 900 FPS @ 720p (1280×720)
300 FPS @ 1080p (1920×1080)
240 FPS @ 3M (2048×1536)
150 FPS @ 5M (2591×1944)
110 FPS @ 4K (3840×2160)		 1200 FPS @ 720p (1280×720)
800 FPS @ 1080p (1920×1080)
340 FPS @ 3M (2048×1536)
240 FPS @ 5M (2591×1944)
120 FPS @ 4K (3840×2160)
Total FPS (H.265) 1200 FPS @ 720p (1280×720)
1200 FPS @ 1080p (1920×1080)
600 FPS @ 3M (2048×1536)
480 FPS @ 5M (2591×1944)
200 FPS @ 4K (3840×2160)		 900 FPS @ 720p (1280×720)
450 FPS @ 1080p (1920×1080)
360 FPS @ 3M (2048×1536)
250 FPS @ 5M (2591×1944)
180 FPS @ 4K (3840×2160)		 1200 FPS @ 720p (1280×720)
1200 FPS @ 1080p (1920×1080)
880 FPS @ 3M (2048×1536)
480 FPS @ 5M (2591×1944)
280 FPS @ 4K (3840×2160)
Total FPS (MJPEG) 300 FPS @ 720p (1280×720)
200 FPS @ 1080p (1920×1080)
130 FPS @ 3M (2048×1536)
80 FPS @ 5M (2591×1944)		 380 FPS @ 720p (1280×720)
250 FPS @ 1080p (1920×1080)
190 FPS @ 3M (2048×1536)
140 FPS @ 5M (2591×1944)
Notes
  • Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup.
  • Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present.
  • Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup.
  • Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present.
  • Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup.
  • Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present.
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) 200 (the number of connections that can be maintained when the recommended number of hosted files was reached) 550 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files 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) 500,000 (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.
  • 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
Maximum Users 200 200 1,800
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.
  • 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 4 (Learn more)
Recommended Virtual DSM Number (Licenses required) 4 (including 1 Free License)
Notes The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections 40 20 40


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