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Silver 2U rackmount chassis with twelve front drive bays and redundant power supplies

Synology Inc.

Synology RX1217sas 12 Bay SAS Expansion Rackmount NAS

SKU CH-9B7T-YBJ88

12-bay SAS expansion unit adds raw capacity to compatible FlashStation and RackStation systems with redundant power and online volume growth

  • Drive interface12 × 3.5 / 2.5 in SAS / SATA HDD / SSD (drives not included)
  • Port others1 x SAS IN 1 x SAS OUT
  • Power detailsAC input power voltage: 100 V to 240 V AC Power frequency: 5
  • Temperature rangeOperating temperature: 5 degree C to 35 degree C (40 degree
  • Humidity range5-95% R.H
  • Key featuresPlug-n-use design for seamless storage space upgrade Online
  • Add 12 drive bays for massive capacity growth
  • Mix 3.5" and 2.5" SAS or SATA drives as needed
  • Redundant power supplies keep the array running during a failure
  • Expand volumes on the fly without downtime
  • Lock into a rack quickly with the RKS1317 kit

12-Bay SAS/SATA Expansion Unit

The Synology RX1217sas is a 2U rackmount enclosure that adds twelve 3.5-inch or 2.5-inch drive bays to a compatible FlashStation or RackStation. It connects through a single Mini-SAS HD cable and ships without drives, letting you populate it with SAS or SATA HDDs and SSDs as capacity needs grow.

Suits Administrators Expanding Existing Synology

This unit is built for IT teams that already run a supported FS3017, FS2017 or RS18017xs+ and need more raw storage without adding another head unit. It is not for buyers who want a standalone NAS with its own operating system, network ports or direct file-serving capability, nor for environments that cannot supply a SAS host connection.

Verify Host Compatibility and Rack Space

Before ordering, confirm that your Synology model appears on the supported list and has an available SAS port for the included expansion cable. Ensure the rack can accommodate a 2U chassis measuring 3.46 inches high by 16.95 inches wide by 27.24 inches deep and that the site meets the 5 to 35 degree Celsius operating temperature range with 5 to 95 percent relative humidity.

How it compares

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

Price $1,416.99
Cheaper than about 94% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRX1217sas
Storage
Drive interface12 × 3.5 / 2.5 in SAS / SATA HDD / SSD (drives not included)
Ports & slots
Port others1 x SAS IN
1 x SAS OUT
Power
Power detailsAC input power voltage: 100 V to 240 V AC
Power frequency: 50 to 60 Hz, single phase
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 weight39.68 lb (18 kg)
In the box
In the box1 x RX1217sas main unit
1 x Quick Installation Guide
1 x Accessory pack
1 x Expansion cable (Mini-SAS HD)
2 x AC power cord
Environment & compliance
Temperature rangeOperating temperature: 5 degree C to 35 degree C (40 degree F - 95 degree F)
Storage temperature: -20 degree C to 60 degree C (-5 degree F to 140 degree F)
Humidity range5-95% R.H

Questions about this item

Which Synology rackmount model do I need so the RX1217sas can attach via its SAS IN port?

The expansion unit connects to the FS3017, FS2017 or RS18017xs+ through the included Mini-SAS HD cable, adding twelve drive bays to those systems.

Can I keep my existing 3.5 inch SATA drives when I add this SAS expansion shelf?

Yes, each of the twelve bays accepts both 3.5 inch and 2.5 inch SAS or SATA drives, so current SATA disks work without change.

How do I confirm the redundant power supplies are active after racking the unit?

Both power modules show a steady green LED when they are receiving 100-240 V AC and operating normally; the Synology DSM interface also reports each supply status.

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