RS422+ vs RS819 vs RS820+
| CPU | |||
| CPU Model | AMD Ryzen R1600 (VM Friendly)(
Benchmark score 898 Single-Core Score |
Realtek RTD1296 (Multimedia Friendly)(
Benchmark score 255 Single-Core Score |
Intel Atom C3538 ( Backups, file server friendly
Benchmark score 255 Single-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. |
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| 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) |
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| 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 |
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| External Drives |
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| 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) | ||
| 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 |
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| 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+ : |
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| 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). |
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| 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 |
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| 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 |
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RS820+ :
RS820RP+ :
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| Optional Accessories |
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| 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. |
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| 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 |
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| RAID Migration |
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| Volume Expansion with Larger HDDs |
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| Volume Expansion by Adding a HDD |
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| Global Hot Spare Supported RAID Type |
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| Notes |
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| 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. |
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| 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 |
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| 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. |
| Antivirus by McAfee (Trial) | |||
| Central Management System | |||
| Synology Chat | |||
| Maximum Users | 500 | 1,500 | |
| Maximum Number of Concurrent Users | 100 | 150 | |
| Notes |
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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 |
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| 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) |
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| Notes |
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| 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 |
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| Synology Office | |||
| Maximum Users | 200 | 200 | 1,800 |
| Notes |
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| 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 |
| Where to Buy a Product | |||
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