RackStation RS2821RP+
Performance Compatibility Downloads Compare Business advice
Performance Compatibility Downloads Compare Business advice

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 RX1217RP/RX1217

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

Reduce the possibility of power disruptions on a single distribution channel or PDU adversely impacting data and service availability.

Near-zero downtime

Pair two identical devices with Synology High Availability and enable automatic minute-level failover between both devices in the event one server fails. Learn more

Data integrity and protection

ECC memory prevents data corruption, while the Btrfs file system brings higher reliability, snapshot technology, and simplified data protection. Learn more

RS2821RPplus_back

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

    Support for 10/25GbE NICs lets you boost server throughput up to five times using Link Aggregation (bonding).

  • SSD cache3

    Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA SSD Cache

  • On-demand drive bays

    Expand to 28 drive bays with one RX1217RP/RX1217 expansion unit

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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

Support for 10/25GbE NICs lets you boost server throughput up to five times using Link Aggregation (bonding).

customize_to_01 shadow

SSD cache3

Boost read/write IOPS over HDD-only arrays by up to 16 times or more with NVMe or SATA SSD Cache

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On-demand drive bays

Expand to 28 drive bays with one RX1217RP/RX1217 expansion unit

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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

    Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees. Learn more

  • office

    Synology Office

    Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze. Learn more

  • chat

    Synology Chat

    Chat and collaborate with colleagues using secure end-to-end encryption on with mobile, desktop, and browser clients. Learn more

Serving remote workforces

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

drive

Synology Drive

Host your own private cloud behind the safety of your NAS with 100% data ownership and no subscription fees. Learn more

office

Synology Office

Create documents, spreadsheets, and slides in a multi-user environment. Real-time collaboration and automatic saving make remote work sessions a breeze. Learn more

chat

Synology Chat

Chat and collaborate with colleagues using secure end-to-end encryption on with mobile, desktop, and browser clients. Learn more

Storage for virtualization

DSM streamlines provisioning for and management of virtual machines with full certification for VMware® vSphere™, Microsoft® Hyper-V®, Citrix® XenServer™, and OpenStack virtualization environments.
Synology Storage Console for VMware or Windows platforms lets you manage storage directly from your hypervisor. VMware VAAI integration and Windows ODX help offload storage operations and speed up data transfer. Learn more

vmware windows2022 citrix openstack

Works best with Synology drives

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

Enterprise Series 3.5" SATA Plus Series 3.5" SATA
Enterprise Series 2.5" SATA Enterprise Series M.2 NVMe
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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

Secure data with comprehensive built-in security tools to protect your devices against evolving threats.

Learn more
Surveillance Station

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Learn more

We have you covered

RS2821RP+ is backed by Synology’s three-year hardware warranty. An optional two-year extended warranty that extends coverage to five years is available in select regions. Learn more

We have you covered

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
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Notes:

  1. Performance testing conducted by Synology with 10GbE NICs installed. Actual results may vary depending on system configuration, testing methods, and other environmental variables. Check the performance page for specific details on the testing environment.
  2. Network adapter cards, expansion units, other PCIe add-in cards, and storage drives are sold separately. Refer to the compatibility list for compatible devices.
  3. SSD cache can be enabled by using compatible 2.5" SSDs in drive bays or without occupying drive bays by installing Synology SNV3400/3500 M.2 NVMe SSDs using M2D20 or E10M20-T1 adapter cards, sold separately.
  4. Users have reported total data size reductions of more than 50% when backing up multiple systems with deduplication technology enabled.
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.