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 read۱, 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.


۳۰cm depth (38cm for RP model)


۴ GB ECC DDR4 Up to 32 GB


۲,۳۰۰ MB/s seq. read 100K 4K random read IOPS۱


AMD Ryzen V1500B quad-core 2.2 GHz

CPU Model AMD Ryzen V1500B
  CPU Quantity ۱
  CPU Architecture ۶۴-bit
  CPU Frequency ۴-core 2.2 GHz
  Hardware Encryption Engine (AES-NI)  
System Memory ۴ GB DDR4 ECC SODIMM
  Memory Module Pre-installed ۴ GB (4 GB x 1)
  Total Memory Slots ۲
  Maximum Memory Capacity ۳۲ 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 ۸
  Maximum Drive Bays with Expansion Unit ۱۲ (RX418 x 1)
  Compatible Drive Type* (See all supported drives)
  • ۳.۵″ SATA HDD
  • ۲.۵″ SATA HDD
  • ۲.۵″ 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
RJ-45 1GbE LAN Port ۴ (with Link Aggregation / Failover support)
  USB 3.2 Gen 1 Port* ۲
  eSATA Port ۱
  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 ۱ x Gen3 x8 slot (x4 link)
File System
Internal Drives
  • Btrfs
  • EXT4
  External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  Notes exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
Form Factor (RU) ۲U
  Size (Height x Width x Depth) RS1221+ :۸۸ mm x 482 mm x 306.6 mmRS1221RP+ :۸۸ mm x 482 mm x 407.5 mm
  Weight RS1221+ :۶.۹ kgRS1221RP+ :۱۱.۷ kg
  Rack Installation Support* RS1221+ :

  • ۴-post 19″ rack (Synology Rail Kit – RKM114/RKS-02)
  • ۲-post 19″ rack (direct mounting)

RS1221RP+ :۴-post 19″ rack (Synology Rail Kit – RKS-02)

  Notes The rail kit is sold separately
System Fan ۸۰ mm x 80 mm x 2 pcs
  Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  Power Recovery  
  Noise Level* RS1221+ :۲۵.۲ dB(A)RS1221RP+ :۴۰ dB(A)
  Scheduled Power On / Off  
  Wake on LAN / WAN  
  Power Supply Unit / Adapter RS1221+ :۲۵۰ WRS1221RP+ :۳۵۰ W
  Redundant Power Supply RS1221+ :RS1221RP+ :
  AC Input Power Voltage ۱۰۰ V to 240 V AC
  Power Frequency ۵۰/۶۰ Hz, Single Phase
  Power Consumption* RS1221+ :۴۹.۸۹ W (Access) ۲۲.۶۴ W (HDD Hibernation)
RS1221RP+ :۶۱.۹۴ W (Access) ۲۹.۹۸ W (HDD Hibernation)
  British Thermal Unit RS1221+ :۱۷۰.۲۳ BTU/hr (Access) ۷۷.۲۵ BTU/hr (HDD Hibernation)
RS1221RP+ :۲۱۱.۳۵ BTU/hr (Access) ۱۰۲.۳۰ 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 ۰°C to 35°C (32°F to 95°F)
  Storage Temperature -۲۰°C to 60°C (-5°F to 140°F)
  Relative Humidity ۵% to 95% RH
  • FCC
  • CE
  • BSMI
  • EAC
  • CCC
  • KC
  • VCCI
  • RCM
۳-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)
RoHS Compliant
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
RS1221+ :

RS1221RP+ :

  Notes RS1221+ :

  • Certain items may not be available in your location. Please contact your local distributors for more information.
  • All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

RS1221RP+ :All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

Synology Assistant


Hardware Installation Guide




RackStation RS1221+​/​RS1221RP+

۱۳-Expansion port

۱۴-Console port

۱۵-Power port

۹-PCIe expansion slot

۱۰-Reset button

۱۱-USB 3.2 Gen 1 port

۱۲-۱GbE RJ-45 port

۵-Alert indicator

۶-Drive status indicator

۷-Drive tray

۸-System fan

۱-Power indicator

۲-Power button

۳-Alert Off Button

۴-Status indicator