Synology RX1217sas scalable SAS storage expansion lebanon
Synology scalable SAS storage expansion unit / 2U - 12-bay
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Synology  scalable SAS storage expansion unit / 2U – 12-bay lebanon

Synology scalable SAS storage expansion unit / 2U – 12-bay
Compatible Drive Type: 3.5” or 2.5” SATA/SAS
Applied Models
FS series:FS6400, FS3600, FS3400, FS3017, FS2017
SA series:SA3600, SA3400
17 series:RS18017xs+
Power Consumption: 132.7 W (Access) 89.3 W (HDD Hibernation)
Size (Height x Width x Depth): 88 mm x 430.5 mm x 692 mm
Weight: 18 kg
5-year hardware warranty


Expansion Unit RX1217sas
Effortless capacity expansion for Synology FlashStation and RackStation solutions on-the-fly.

12-bay 3.5″/2.5″ SAS/SATA expansion
Easily add 12 additional drive bays to Synology FlashStation or RackStation. Supporting both 2.5″ and 3.5″ SAS/SATA drives, the RX1217sas is a flexible solution supporting on-the-fly volume expansion or serving as a local backup destination.

Hardware Specifications
Applied Models

Supports creating volumes across different units

·FS series:FS6400, FS3600, FS3400, FS3017, FS2017

·SA series:SA3600, SA3400

·17 series:RS18017xs+


·To have better performance, we recommend creating storage volumes physically located within the same NAS or Expansion Unit, rather than creating volumes across your NAS and Expansion Unit.

·Connecting to a Synology FlashStation FS3017 requires the optional FS3017 Expansion Card (FXC17) to be installed on the host device. FS3017 Expansion Card is sold separately.


Drive Bays


Compatible Drive Type* (See all supported drives)

·3.5″ SAS HDD

·2.5″ SAS HDD

·2.5″ SAS SSD

·3.5″ SATA HDD

·2.5″ SATA SSD

Hot Swappable Drive*

RAID Management through Synology DSM


Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.

External Ports

SAS IN-port


SAS OUT-port



Size (Height x Width x Depth)

88 mm x 430.5 mm x 692 mm

Size (Height x Width x Depth) (with server ears)

88 mm x 482 mm x 724 mm


18 kg

Rack Installation Support*

4-post 19″ rack (Synology Rail Kit – RKS-02)


The rail kit is sold separately


Power Recovery

Synchronized with the Synology RackStation

Power Supply Unit / Adapter

500 W

AC Input Power Voltage

100V to 240V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption

132.7 W (Access)
89.3 W (HDD Hibernation)

British Thermal Unit

452.79 BTU/hr (Access)
304.7 BTU/hr (HDD Hibernation)

Redundant Power Supply (for RP model)


Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).


Operating Temperature

5°C to 35°C (40°F to 95°F)

Storage Temperature

-20°C to 60°C (-5°F to 140°F)

Relative Humidity

5% to 95% RH


System Fan

60 mm x 60 mm x 4 pcs

Easy Replacement System Fan

Noise Level*

60.9 dB(A)


· UL


· CE




· KC


5 Years


The warranty period starts from the purchase date as stated on your purchase receipt.

Environment & Packaging


RoHS Compliant

Packaging Content

· Main Unit X 1

· Accessory Pack X 1

· AC Power Cord X 2

· Expansion Cable: MiniSAS-HD X 1

· Quick Installation Guide X 1

Optional Accessories

· Enterprise Series 3.5″ SAS HDD: HAS5300 Series

· Enterprise Series 3.5″ SATA HDD: HAT5300 Series

· Enterprise Series 2.5″ SATA SSD: SAT5200 Series

· Rail Kit Sliding: RKS-02