RackStation RS2821RP+

High-performance storage for data protection, file serving, and more.

Versatile and scalable storage

Synology RS2821RP+ is a 3U 16-bay storage server designed to accommodate a diverse set of business requirements. Scalable to 28 drives, the unit provides powerful backup and restoration functionality for the SMB sector. It delivers 2,200 MB/s sequential read and 105K 4K random read performance1, and can be upgraded with SSD cache and 10/25Gb Ethernet2 options.

Download Datasheet

Compute

Compute

AMD Ryzen™ V1500B quad-core 2.2 GHz

Throughput

Throughput

2,220 MB/s seq. read 105K 4K random read performance1

Memory

Memory

4 GB ECC DDR4, up to 32 GB

Scalability

Scalability

Up to 28 drive bays with RX1217(RP)

High performance storage for anything

Over 105K/59K random read/write IOPS and up to 2,220/1,164 MB/s sequential read/write throughput ensure ample performance for demanding workloads.1

4K Random IOPS Sequential Throughput

* compared to predecessor RS2818RP+

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Built for reliability

Redundant power

Near-zero downtime

Data integrity and protection

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Customize to suit

Easily adapt the RS2821RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity.2

  • 10/25GbE ready

  • SSD cache3

  • On-demand drive bays

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Customize to suit

Easily adapt the RS2821RP+ to any business environment by adding faster networking, local SSD cache, or storage capacity.2

10/25GbE ready

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SSD cache3

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On-demand drive bays

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Serving remote workforces

Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication.

  • drive

    Synology Drive

  • office

    Synology Office

  • chat

    Synology Chat

Serving remote workforces

Keep your remote workforce connected with powerful out-of-the-box solutions for collaboration, file sharing, and communication.

drive

Synology Drive

office

Synology Office

chat

Synology Chat

Works best with Synology drives

Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.

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Powered by Synology DiskStation Manager

The web-based DiskStation Manager (DSM) operating system supports a host of native productivity and management solutions.

Central Management System

Central Management System

Conveniently manage your fleet of Synology NAS from a centralized console.

Learn more
Synology Drive

Synology Drive

Instantly access your NAS files across multiple devices whenever you want, wherever you are.

Learn more
Collaboration Suite

Collaboration Suite

Satisfy all team collaboration needs behind the safety of your own private cloud with Synology Office, Calendar, and Chat.

Learn more
Virtual Machine Manager

Virtual Machine Manager

Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.

Learn more
Security

Security

Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.

Learn more
Surveillance

Surveillance

Protect your home or business with intelligent monitoring and video management tools.

Learn more

Extra protection with Extended Warranty Plus

Extend the standard 3-year hardware warranty of your RS2821RP+ with 2 more years of Synology-certified support and premium services that help you recover faster in the event of disaster.

RackStation RS2821RP+

product RS2821RPplus front view photo
product RS2821RPplus back view photo
  • 1 Power button and indicator
  • 2 Status Indicator
  • 3 Alert Indicator
  • 4 Alert Off Button
  • 5 Drive status indicator
  • 6 Drive tray
  • 7 Rail Kit Release Tab
  • 8 PSU fan
  • 9 Power Port
  • 10 PSU indicator
  • 11 Console port
  • 12 PCIe expansion slot
  • 13 1GbE RJ-45 port
  • 14 USB 3.2 Ports
  • 15 Expansion port
  • 16 Reset button
Hardware Specifications
CPU
CPU
CPU Model AMD Ryzen V1500B
CPU Quantity 1
CPU Architecture 64-bit
CPU Frequency 4-core 2.2 GHz
Hardware Encryption Engine
Memory
Memory
System Memory 4 GB DDR4 ECC UDIMM
Memory Module Pre-installed 4 GB (4 GB x 1)
Total Memory Slots 2
Maximum Memory Capacity 32 GB (16 GB x 2)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage
Storage
Drive Bays 16
Maximum Drive Bays with Expansion Unit 28 (RX1217/RX1217RP x 1)
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Hot Swappable Drive*
Notes
  • Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
  • "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
External Ports
RJ-45 1GbE LAN Port 4 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port* 2
Expansion Port 1
Notes The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
PCIe
PCIe
PCIe Expansion 1 x Gen3 x8 slot (x4 link)
Appearance
Appearance
Form Factor (RU) 3U
Size (Height x Width x Depth) 132.3 mm x 482 mm x 656.5 mm
Weight 17.1 kg
Rack Installation Support* 4-post 19" rack (Synology Rail Kit - RKS-02)
Notes The rail kit is sold separately
Others
Others
System Fan 80 mm x 80 mm x 3 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Easy Replacement System Fan
Power Recovery
Noise Level* 53.5 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 550 W
Redundant Power Supply
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 97.54 W (Access)
49.57 W (HDD Hibernation)
British Thermal Unit 332.61 BTU/hr (Access)
169.03 BTU/hr (HDD Hibernation)
Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature
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
Certification
  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • KC
  • UL
  • VCCI
  • RCM
Warranty
Warranty
3-year hardware warranty, extendable to 5 years with EW202 or Extended Warranty Plus
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.
Environment
Environment
RoHS Compliant
Packaging Content
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
Optional Accessories
Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

Notes:

  1. Model specifications are subject to change without prior notice.
  2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.