RackStation RS820+/RS820RP+
RackStation RS820+/RS820RP+
Ideal 1U rackmount NAS for high-performance data management
High-performance storage solution with on-demand scalability
Synology RackStation RS820+/RS820RP+ is designed for businesses pursuing an effective and centralized data management. It comes with four drive trays and 1GbE LAN ports and supports an optional 10GbE network or M.2 SSD adapter card, providing fast data transmission and reducing IO latency.
CPU
4-core 2.1 GHz
Memory
2GB DDR4, up to 18GB
High Performance
Over 1,621 MB/s sequential reading1
Scalability
Up to 8 drives with RX4182
Built for service reliability
RS820+/RS820RP+ comes with four 1GbE LAN ports to support Link Aggregation and failover. Synology High Availability provides a reliable active/passive server cluster, maximizing service uptime. Furthermore, RS820RP+ is equipped with redundant power supplies to achieve service continuity.
Next-generation file system for better data protection
The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.

Flexible shared folder/user quota control provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File or folder level data restoration makes data recovery fast and flexible

Automatic file self-healing detects and recovers corrupted files without user intervention
Ultimate Backup Solution
RS820+/RS820RP+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

Active Backup for Business
Active Backup centralizes backup tasks for VMware, Windows, Office 365 and G Suite — so you can manage these backups to Synology NAS from one simple console.
Learn more

Hyper Backup
Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.
Learn more

Synology Drive
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Learn more
Real-time collaboration on your private cloud
Synology Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment.
Engineered for reliability, backed by Synology
RS820+/RS820RP+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage. Learn more

Powered by Synology DSM
Surveillance Station
Complete surveillance solution for recording, monitoring, and management.
Learn moreSynology Office
Collaborate on documents, spreadsheets, and slides in real time to boost team productivity.
Learn moreSynology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
Learn moreDSM UI
Award-winning operating system with an intuitive user interface and powerful capabilities.
Learn moreSecurity
Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.
Learn moreAll-in-one server
Save additional investment by integrating various network services, web/mail services, management applications into your NAS.
Learn moreNotes:
- Please visit the performance page for test environment
- RS820+/RS820RP+ supports one Synology expansion unit RX418, sold separately.
Hardware Specifications |
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CPU |
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CPU |
CPU Model | Intel Atom C3538 |
CPU Architecture | 64-bit | |
CPU Frequency | Quad Core 2.1 GHz | |
Hardware Encryption Engine (AES-NI) | ||
Memory |
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Memory |
System Memory | 2 GB DDR4 |
Total Memory Slots | 1 | |
Memory Expandable up to | 18 GB (2GB + 16 GB) | |
Notes |
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Storage |
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Storage |
Drive Bays | 4 |
Maximum Drive Bays with Expansion Unit | 8 | |
Compatible Drive Type* (See all supported drives) |
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Maximum Internal Raw Capacity | 64 TB (16 TB drive x 4) (Capacity may vary by RAID types) | |
Maximum Raw Capacity with Expansion Units | 128 TB (64 TB + 16 TB drive x 4) (Capacity may vary by RAID types) | |
Maximum Single Volume Size* | 108 TB | |
Hot Swappable Drive | ||
Notes |
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External Ports |
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External Ports |
RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) |
USB 3.0 Port | 2 | |
eSATA Port | 1 | |
PCIe |
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PCIe |
PCIe Expansion | 1 x Gen3 x8 slot (black, x4 link) |
Add-In-Card Support |
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File System |
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File System |
Internal Drives |
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External Drives |
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Notes | exFAT Access is purchased separately in Package Center. | |
Appearance |
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Appearance |
Form Factor (RU) | 1U |
Size (Height x Width x Depth) |
44 mm x 480 mm x 492.6 mm 44 mm x 480 mm x 518.6 mm (for RP model) |
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Weight |
6.4 kg 7.96 kg (for RP model) |
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Rack Installation Support* | 4-post 19" rack (Synology Rail Kit - RKM114/RKS1317) | |
Notes | The rail kit is sold separately | |
Others |
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Others |
System Fan |
40 mm x 40 mm x 3 pcs 40 mm x 40 mm x 2 pcs (for RP model) |
Fan Speed Mode |
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Power Recovery | ||
Noise Level* |
27 dB(A) 39.9 dB(A) (for RP model) |
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Scheduled Power On / Off | ||
Wake on LAN / WAN | ||
Power Supply Unit / Adapter | 150 W | |
Redundant Power Supply | yes (for RP model) | |
AC Input Power Voltage | 100 V to 240 V AC | |
Power Frequency | 50/60 Hz, Single Phase | |
Power Consumption* |
37.94 W (Access) 20.96 W (HDD Hibernation) 38.88 W (Access) (for RP model) 22.17 W (HDD Hibernation) (for RP model) |
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British Thermal Unit |
129.54 BTU/hr (Access) 71.57 BTU/hr (HDD Hibernation) 132.75 BTU/hr (Access) (for RP model) 75.70 BTU/hr (HDD Hibernation) (for RP model) |
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Notes |
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Temperature |
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Temperature |
Operating Temperature | 0°C to 35°C (32°F to 95°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
Relative Humidity | 5% to 95% RH | |
Certification |
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Certification |
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Warranty |
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Warranty |
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) | |
Environment |
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Environment |
RoHS Compliant | |
Packaging Content |
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Packaging Content |
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Optional Accessories |
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Optional Accessories |
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Notes | This model does not support the ECC feature, regardless of whether the expansion memory is ECC or non-ECC. |
DSM Specifications |
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Storage Management |
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Storage Management |
Maximum Internal Volume Number | 64 |
Maximum iSCSI Target Number | 128 | |
Maximum iSCSI LUN | 256 | |
iSCSI LUN Clone/Snapshot, Windows ODX | ||
SSD Read Cache | ||
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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File Services |
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File Services |
File Protocol | CIFS/AFP/NFS/FTP/WebDAV |
Maximum Concurrent CIFS/AFP/FTP Connections | 500 | |
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 2,000 | |
Windows Access Control List (ACL) Integration | ||
NFS Kerberos Authentication | ||
Account & Shared Folder |
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Account & Shared Folder |
Maximum Local User Accounts | 2,048 |
Maximum Local Groups | 256 | |
Maximum Shared Folder | 512 | |
Maximum Shared Folder Sync Tasks | 8 | |
High Availability |
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High Availability |
Synology High Availability | |
Log Center |
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Log Center |
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Syslog Events per Second | 800 | |
Virtualization |
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Virtualization |
VMware vSphere 6 with VAAI | |
Windows Server 2016 | ||
Citrix Ready | ||
OpenStack | ||
General Specifications |
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General Specifications |
Networking Protocols | 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 | |
Add-on Packages view the complete package list |
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Antivirus by McAfee (Trial) |
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Antivirus by McAfee (Trial) |
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Central Management System |
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Central Management System |
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Synology Chat |
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Synology Chat |
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Maximum Users | 1,500 | |
Notes |
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Document Viewer |
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Document Viewer |
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Download Station |
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Download Station |
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Maximum Concurrent Download Tasks | 80 | |
exFAT Access (Optional) |
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exFAT Access (Optional) |
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Synology MailPlus / MailPlus Server |
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Synology MailPlus / MailPlus Server |
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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 |
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Media Server |
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DLNA Compliance | ||
Moments |
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Moments |
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Facial Recognition | ||
Subject Recognition | ||
Auto Color & Rotate | ||
Moments Select | ||
Snapshot Replication |
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Snapshot Replication |
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Maximum Snapshots per Shared Folder | 1,024 | |
Maximum of System Snapshots | 65,536 | |
Surveillance Station |
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Surveillance Station |
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Maximum IP cam (Licenses required) | 40 (including 2 Free License) (See All Supported IP Cameras) | |
Total FPS (H.264)* |
1200 FPS @ 720p (1280x720) 800 FPS @ 1080p (1920x1080) 340 FPS @ 3M (2048x1536) 240 FPS @ 5M (2591x1944) 120 FPS @ 4K (3840x2160) |
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Total FPS (H.265)* |
1200 FPS @ 720p (1280x720) 1200 FPS @ 1080p (1920x1080) 880 FPS @ 3M (2048x1536) 480 FPS @ 5M (2591x1944) 280 FPS @ 4K (3840x2160) |
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Total FPS (MJPEG)* |
380 FPS @ 720p (1280x720) 250 FPS @ 1080p (1920x1080) 190 FPS @ 3M (2048x1536) 140 FPS @ 5M (2591x1944) |
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Notes | Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera. | |
Synology Drive |
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Synology Drive |
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Recommended Number of Hosted Files | 1,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
Recommended Number of Concurrent Sync Clients | 550 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
Notes |
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Synology Office |
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Synology Office |
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Maximum Users | 1,800 | |
Notes |
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Video Station |
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Video Station |
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Video Transcoding | Group 1 - Type 1 (See more) | |
Maximum Transcoding Channel Number | 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1 | |
Virtual Machine Manager |
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Virtual Machine Manager |
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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 |
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VPN Server |
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Maximum Connections | 20 |
Notes:
- Model specifications are subject to change without prior notice.