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Silver 12-bay 2U rackmount expansion unit with front drive trays and rear SAS ports

Synology Inc.

Synology Inc. RX1222sas 12-bay SAS rackmount NAS expansion unit

SKU CH-507N-07XXF MPN RX1222sas

Adds twelve SAS/SATA drive bays to compatible Synology rackmount servers via included expansion cables

  • Drive interface12 x SAS (12 x Bay)
  • Port othersSAS IN x 1, SAS OUT x 1
  • Compatible drives3.5 in or 2.5 in SAS/SATA HDD/SSD
  • Power details100-240 VAC 50/60 Hz
  • Temperature range0 °C - 35 °C
  • Humidity range5-95% R.H (Storage)

Model RX1222sas

  • Add 12 drive bays to a Synology rackmount server via SAS expansion cable
  • Supports 3.5" and 2.5" SAS or SATA hard drives and SSDs
  • Scale to 84 drives by chaining up to seven expansion units
  • Expand RAID volumes online without reformatting through Synology DSM
  • Operates from 0 °C to 35 °C with redundant 100-240 VAC power supplies

12-bay SAS expansion unit

The Synology RX1222sas is a diskless rackmount enclosure that adds twelve SAS or SATA drive bays to a compatible Synology rackmount server. It connects through the supplied expansion cables and is managed entirely within Synology DiskStation Manager.

Suits administrators scaling a Synology SAS host

This unit serves IT teams that need to grow raw capacity on an existing Synology rackmount system without interrupting services. It is not for environments that lack a supported Synology host with a free expansion port, nor for direct attachment to non-Synology servers or workstations.

Single SAS expansion port pair

One SAS IN and one SAS OUT port link the RX1222sas to the host and allow daisy-chaining up to seven units for a total of 84 additional drives. Compatibility depends on the host model supporting this expansion interface.

How it compares

Measured against everything we stock in Rack-Mounted NAS Servers, at today’s prices. Recalculated every night.

Price $2,640.99
Cheaper than about 88% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRX1222sas
Storage
Drive interface12 x SAS (12 x Bay)
Ports & slots
Port othersSAS IN x 1, SAS OUT x 1
Power
Power details100-240 VAC 50/60 Hz
Size & build
Product dimensions3.46 in × 16.95 in × 27.24 in
3.46 in × 18.98 in × 28.5 in (with server ears)
Product weight29.76 lb (13.5 kg)
Shipping weight19.01 kg
Package size831 × 653 × 229 mm
Compatibility
Compatible drives3.5 in or 2.5 in SAS/SATA HDD/SSD
In the box
In the box1 x RX1222sas main unit
2 x AC power cord
2 x Expansion cable
1 x Accessory pack
1 x Quick Installation Guide
Environment & compliance
Temperature range0 °C - 35 °C
Humidity range5-95% R.H (Storage)

Other versions of this model

3 more in the same range

Questions about this item

How can I verify the RX1222sas is operating correctly after connecting it to my Synology server?

After linking the unit with the supplied expansion cable, open Storage Manager in DSM. The 12 drive bays should appear, each showing a healthy status and correct temperature readings between 0°C and 35°C.

What ships with the RX1222sas and which components must I purchase separately?

The box contains the main unit, two AC power cords, two expansion cables, an accessory pack and a quick installation guide. You must buy 3.5" or 2.5" SAS or SATA drives separately.

Should I choose the RX1222sas or a different capacity expansion unit for my rackmount server?

The RX1222sas provides 12 SAS/SATA bays per chassis. Up to seven units can be daisy-chained via the SAS IN and SAS OUT ports, scaling raw capacity to 84 drives. Choose based on how many bays you need today and your planned growth.

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