Performance Compatibility Downloads Compare

RackStation RS1221+​/​RS1221RP+

A powerful storage solution for businesses and IT enthusiasts with redundancy and service continuity features.

Compact and reliable

The RS1221+/RS1221RP+, at only 30 to 38 centimeters deep, is built for space-sensitive deployments. Boasting over 100K 4K random read IOPS and 2,315 MB/s sequential read1, the RS1221+/RS1221RP+ is equipped to handle heavy workloads in data-intensive environments. The RS1221RP+ additionally features an extra level of protection with redundant power supplies.

Download Datasheet

Compute

Compute

AMD Ryzen™ V1500B quad-core 2.2 GHz

Throughput

Throughput

2,300 MB/s seq. read 100K 4K random read IOPS1

Memory

Memory

4 GB ECC DDR4 Up to 32 GB

Compact

Compact

30cm depth (38cm for RP model)

A compact design for space efficiency

The RS1221+ and its RX418 expansion units are designed to help you save space in compact deployments. At only 30 centimeters, half the length of a typical 2U unit, it fits perfectly snug onto 2-post or shallow rackmount enclosures. The RS1221RP+ with dual power supplies comes in at 38 cm, also fitting most shallow depth enclosures.2

  • Fits into shallow rackmount enclosures
  • Easy-to-install on 2-post racks
A compact design for space efficiency

Built for reliability

Redundant power

Reduce the chance that power disruptions on a single distribution channel or PDU causes data and service availability degradation.

Maximize service availability

When paired with another identical unit, Synology High Availability enables automatic minute-level failover between two clustered servers in the event of a server failure to minimize service downtime.Learn more

Data integrity and protection

ECC memory and the Btrfs file system bring higher reliability and snapshot capabilities to help prevent data corruption and simplify data protection.Learn more

RS1221+ back

High performance storage for anything

Up to 2,315/1,147 MB/s sequential read and write throughput and over 100K/54K random read/write IOPS ensures ample performance for demanding workloads.1

4KB Random IOPS Sequential Throughput

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With room to grow with you

Easily upgrade the RS1221+/RS1221RP+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity.3

  • SSD cache

    Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache4

  • 10GbE ready

    Improve I/O with faster SFP+ or RJ-45 networking

  • Storage expansion

    Expand to 12 drive bays with a RX418 expansion unit

  • SSD cache
  • 10GbE ready
  • Storage expansion
  1. 1
  2. 2
  3. 3

With room to grow with you

Easily upgrade the RS1221+/RS1221RP+ to match your usage environment, whether it’s for performance, faster networking, or higher storage capacity.3

SSD cache

Boost read/write IOPS over HDD-only arrays by 16X or more with NVMe or SATA SSD Cache4

SSD cache

10GbE ready

Improve I/O with faster SFP+ or RJ-45 networking

10GbE ready

Storage expansion

Expand to 12 drive bays with a RX418 expansion unit

Storage expansion

Data protection solutions, built-in

Fully certified storage virtualization solutions

Synology iSCSI storage fully supports mainstream virtualization solutions to enhance work efficiency with an easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments.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
img enterprise-hat img plus-hat3310 img enterprise-sat img enterprise-snv3000

Powered by Synology DiskStation Manager

Synology High Availability

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Learn more
Virtual Machine Manager

Virtual Machine Manager

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

Learn more
Synology Drive

Synology Drive

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

Learn more
Central Management System

Central Management System

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

Learn more
Surveillance

Surveillance

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

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

Extra protection with Extended Warranty Plus

Extend the standard 3-year hardware warranty of your RS1221+ with 2 more years of Synology-certified support and premium services that help you recover faster in the event of disaster.

RackStation RS1221+​/​RS1221RP+

product RS1221RPplus front view photo
product RS1221RPplus back view photo
  • 1 Power indicator
  • 2 Power button
  • 3 Alert Off Button
  • 4 Status indicator
  • 5 Alert indicator
  • 6 Drive status indicator
  • 7 Drive tray
  • 8 System fan
  • 9 PCIe expansion slot
  • 10 Reset button
  • 11 USB 3.2 Gen 1 port
  • 12 1GbE RJ-45 port
  • 13 Expansion port
  • 14 Console port
  • 15 Power port
  • 16 PSU Indicators & Alert Off Buttons
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Notes:

  1. Performance testing conducted by Synology with 10GbE NIC installed. Actual results may vary depending on system configuration, testing methods, and other environmental variables. Check the performance page for additional details.
  2. Compared to typical 2U rackmount chassis depth of 24" (61cm) or more. Actual fit will may depend on cabinet design, including usable space, cable routing, weight tolerance, and more. Synology is unable to provide guidance on compatibility with specific rackmount equipment.
  3. Network adapter cards, expansion units, other PCIe add-in-cards, and storage drives are sold separately. Refer to the compatibility list for compatible devices. Learn more
  4. NVMe SSD cache can be enabled via a M2D20 or E10M20-T1 PCIe expansion card and 2x Synology SNV3400/3500 M.2 NVMe SSDs. Read/write SATA SSD cache can be enabled via 2x Synology SAT5200 2.5" SATA SSDs.
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 SODIMM
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 8
Maximum Drive Bays with Expansion Unit 12 (RX418 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 "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
eSATA 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) 2U
Size (Height x Width x Depth) RS1221+ : 88 mm x 482 mm x 306.6 mm
RS1221RP+ : 88 mm x 482 mm x 407.5 mm
Weight RS1221+ : 6.9 kg
RS1221RP+ : 8.4 kg
Rack Installation Support* RS1221+ :
  • 4-post 19" rack (Synology Rail Kit - RKM114/RKS-02)
  • 2-post 19" rack (direct mounting)

RS1221RP+ : 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 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Power Recovery
Noise Level* RS1221+ : 37.8 dB(A)
RS1221RP+ : 53.5 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter RS1221+ : 250 W
RS1221RP+ : 350 W
Redundant Power Supply RS1221+ : -
RS1221RP+ :
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption RS1221+ : 49.89 W (Access)
22.64 W (HDD Hibernation)
RS1221RP+ : 61.94 W (Access)
29.98 W (HDD Hibernation)
British Thermal Unit RS1221+ : 170.23 BTU/hr (Access)
77.25 BTU/hr (HDD Hibernation)
RS1221RP+ : 211.35 BTU/hr (Access)
102.30 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
 RS1221+ :
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • C13 to C14 power cord x 1
  • Quick Installation Guide X 1

RS1221RP+ :
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
Optional Accessories
 RS1221+ :
RS1221RP+ :
Notes RS1221+ :
  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

RS1221RP+ :
  • Upgrade to DSM 7.2-64551 or later before installing the M2D18.
  • 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.