RX1222sas Synology Expansion

RX1222sas Synology Expansion


Applicable models

Remark It is recommended to create storage space on a single server or expansion device, rather than across different devices, in order to obtain better system performance.

Storage device

Number of Disk Slots 12
Compatible Disk Type* (See all supported disks)
  • 3.5″ SAS HDD
  • 3.5″ SATA HDD
  • 2.5″ SATA SSD
Maximum internal net total storage capacity 192 TB (16 TB drive x 12) (Capacity may vary by RAID types)
Disk hot swap support
Use Synology DSM to manage RAID
  • It is strongly recommended that you install the hard drives listed in the compatibility list of this model. Using unverified hard drives may cause storage pool and storage space creation failures. Synology does not provide technical support services for devices that use unsupported components.
  • Compatible disk type refers to the type of hard disk that is confirmed to be compatible with the product after actual measurement, and the maximum speed limit of the non-hard disk slot.

External port

SAS IN port 1
SAS OUT port 1


Size (Height X Width X Depth) 88 mm x 430.5 mm x 692 mm
Size (H x W x D) (including chassis bracket) 88 mm x 482 mm x 724 mm
weight 13.5 kg
Rack installation support*
  • Four-post 19-inch (Synology Rack Kit- RKS1317 )
  • Four-post 19-inch (Synology Rack Kit- RKS-02 )
Remark Rack kit needs to be purchased separately

power supply

Power supply/transformer 500 W
AC input voltage 100 V to 240 V AC
Current frequency 50/60 Hz, single frequency
Power consumption power* 194.4 W (Access)
82.56 W (HDD hibernation)
British Thermal Unit 663.48 BTU/hr (Access)
281.77 BTU/hr (HDD Hibernation)
Dual power supply (RP model)
Remark The power consumption test data is obtained when the Synology HAS5300-8T hard disk is fully loaded.


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

other projects

System fan 80 mm x 80 mm x 4 pcs
Replaceable system fan
Noise value* 54.5 dB(A)
Remark Noise level test environment: Use Synology SAT5200-480G SSD in standby mode, with two GRAS Type 40AE microphones set up at a distance of 1 meter in front of and behind Synology NAS; background noise level: 16.49-17.51 ​​dB(A); temperature: 24.25-25.75 degrees Celsius; humidity: 58.2-61.8%.

Certification body

  • FCC
  • CE
  • BSMI
  • UKCA
  • EAC
  • VCCI
  • RCM
  • KC


5 years
Remark The warranty period starts from the date of purchase stated on the purchase receipt. (See more)

Environment and packaging


RoHS compliant

Package contents

  • Host X 1
  • Accessory bag X 1
  • Power cord X 2
  • Expansion cable: Mini-SAS HD X 2
  • Quick Installation Guide X 1

Optional accessories

  • 3.5″ SATA HDD: HAT5300
  • 2.5″ SATA SSD: SAT5200
  • Sliding rack kit: RKS1317
  • Sliding rack kit: RKS-02
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