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Synology RackStation RS2821RP+ High-performance storage for data protection, file serving, and more.

Synology RackStation RS2821RP+ High-performance storage for data protection, file serving, and more.

CPU: AMD Ryzen V1500B 4-core 2.2 GHz, RAM: 4 GB DDR4 ECC SODIMM (Max 32 GB), Gigabit LAN Port x4, USB 3.2 Gen 1 Port x2, Expansion Port x1, Gen3 x8 slot (x4 link) x1, Redundant Power Supply, 3 Years Warranty


139,000.00 บาท (รวมภาษี)


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Rating: 6.5/10 (2 votes cast)

RackStation RS2821RP+

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

Synology NAS RackStation RS2821RP+

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



AMD Ryzen™ V1500B quad-core 2.2 GHz



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



4 GB ECC DDR4, up to 32 GB



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

* compared to predecessor RS2818RP+

4K Random IOPS


Sequential Throughput

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

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 RX1217(RP) expansion unit

License-free backup solutions

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

Works best with Synology drives

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

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


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
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


  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 Model AMD Ryzen V1500B

    CPU Quantity 1

    CPU Architecture 64-bit

    CPU Frequency 4-core 2.2 GHz

    Hardware Encryption Engine (AES-NI)


    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)

    • 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.


    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

    Maximum Single Volume Size* 108 TB

    Hot Swappable Drive

    • It is strongly recommended that you only install drives listed on your device's compatibility list. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components.
    • "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.
    • Each internal volume (may consist of multiple drives) is expandable up to 108TB.

    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 Expansion 1 x Gen3 x8 slot (x4 link)

    File System

    Internal Drives
    • Btrfs
    • EXT4

    External Drives
    • Btrfs
    • EXT4
    • EXT3
    • FAT
    • NTFS
    • HFS+
    • exFAT*

    Notes exFAT Access is purchased separately in Package Center.


    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 - RKS1317)

    Notes The rail kit is sold separately


    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)

    • 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%


    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


    • FCC
    • CE
    • BSMI
    • EAC
    • CCC
    • KC
    • UL
    • VCCI
    • RCM


    3 Years

    Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)


    RoHS Compliant

    Packaging Content

    • Main Unit X 1
    • Accessory Pack X 1
    • AC Power Cord X 2
    • Quick Installation Guide X 1

    Optional Accessories

    Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.



    • Model specifications are subject to change without prior notice.
    • 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.
    • The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
    • If usage requirements exceed the specifications above, please contact our regional partners for professional advice.

    Software Specifications

    see more...


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