Expansion Unit RX1217sas

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

Features
Specs

12-bay 3.5"/2.5" SAS/SATA expansion

Easily add 12 additional drive bays to Synology FlashStation or RackStation¹. 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.

Maximum reliability design

Dual power supplies ensure continuous service uptime. Easily replace defective drives with the hot swappable drive trays. Experience fast and secure rack cabinet installation with the optional sliding rail kit RKS1317.

5-year warranty

At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.

Notes:

View specifications for a list of supported models.

Hardware Specifications
Applied Models
Applied Models	Supports creating volumes across different units	FS series:FS6400, FS3600, FS3400, FS3017, FS2017 SA series:SA3600, SA3400 17 series:RS18017xs+
	Notes	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.
Storage
Storage	Drive Bays	12
	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
	Maximum Internal Raw Capacity	192 TB (16 TB drive x 12) (Capacity may vary by RAID types)
	Hot Swappable Drive
	RAID Management through Synology DSM
	Notes	Storage Pool and volume creation require all drives to be listed as compatible on the device model's compatibility list.
External Ports
External Ports	SAS IN-port	1
	SAS OUT-port	1
Appearance
Appearance	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
	Weight	18 kg
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKS1317)
	Notes	The rail kit is sold separately
Power
Power	Power Recovery	Synchronized with the Synology RackStation
	Power Supply Unit / Adapter	500 W
	AC Input Power Voltage	100 V to 240 V 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)
	Notes	Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Temperature
Temperature	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
Others
Others	System Fan	60 mm x 60 mm x 4 pcs
	Easy Replacement System Fan
	Noise Level*	60.9 dB(A)
Certification
Certification	UL FCC CE BSMI EAC RCM KC
Warranty
Warranty	5 Years
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment & Packaging
Environment
Environment	RoHS Compliant
Packaging Content
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
Optional Accessories	3.5" SATA HDD: HAT5300 2.5" SATA SSD: SAT5200 Rail Kit Sliding: RKS1317

Notes:

Model specifications are subject to change without prior notice.
The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
If usage requirements exceed the specifications above, please contact our regional partners for professional advice.