Expansion Unit RX418 – 4-bay 1U rackmount expansion unit for 1U RackStation

RX418 – Storage capacity expansion

When the storage capacity on Synology 1U RackStation reaches its limit, Synology expansion unit RX418 provides easy capacity expansion by adding 4 3.5″/2.5″ SATA drives to the system. Synology RX418 can also be used as a dedicated local backup destination of Synology 1U RackStation for comprehensive data protection.

Reliable plug-and-play design

Simply connect Synology RX418 to corresponding Synology RackStation and it is ready to use. Drives in the connected Synology RX418 operate as though they were internal to the connected Synology NAS and can be managed directly by Synology DiskStation Manager (DSM), with no additional software installation required.

Green and easy to manage

Award-winning Synology DSM provides an intuitive user interface for easy system management. Drive hibernation can be configured in DSM to take effect automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of the installed drives.

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Hardware Specs

Hardware Specifications
Applied Models	Supports creating volumes across different units	21 series:RS1221RP+, RS1221+ 20 series:RS820RP+, RS820+ 19 series:RS1219+, RS819 18 series:RS818RP+, RS818+ 16 series:RS816 15 series:RS815RP+, RS815+, RS815
	Supports creating volumes on a single unit only	RS217
	Notes	For more information on the compatibility of each expansion unit, please refer to this article. 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. DSM version requirement: 6.1.4-15217-3 or later version
Storage	Drive Bays	4
	Compatible Drive Type* (See all supported drives)	3.5″ SATA HDD 2.5″ SATA HDD 2.5″ SATA SSD
	Maximum Internal Raw Capacity	64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
	Hot Swappable Drive
	RAID Management through Synology DSM
	Notes	It is strongly recommended that you only install drives listed on your device’s compatibility list. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components.
External Ports	eSATA Port	1
Appearance	Size (Height x Width x Depth)	44 mm x 430.5 mm x 290 mm
	Size (Height x Width x Depth) (with server ears)	44 mm x 480 mm x 325 mm
	Weight	4.28 kg
	Rack Installation Support*	4-post 19″ rack (Synology Rail Kit – RKM114/RKS1317) 2-post 19″ rack (direct mounting)
	Notes	The rail kit is sold separately
Power	Power Recovery	Synchronized with the Synology RackStation
	Power Supply Unit / Adapter	100 W
	AC Input Power Voltage	100 V to 240 V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption*	23.26 W (Access) 6.39 W (HDD Hibernation)
	British Thermal Unit	79.42 BTU/hr (Access) 21.82 BTU/hr (HDD Hibernation)
	Notes	Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
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	System Fan	40 mm x 40 mm x 3 pcs
	Noise Level*	25.1 dB(A)
	Notes	Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Certification	FCC CE BSMI EAC VCCI RCM KC
Warranty	3-year hardware warranty, extendable to 5-year coverage – EW201
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment & Packaging
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 User’s Guide X 1 Accessory Pack X 1 AC Power Cord X 1 Expansion Cable: eSATA X 1
Optional Accessories	3.5″ SATA HDD: HAT5300 2.5″ SATA SSD: SAT5200 Rail Kit Sliding: RKS1317 Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*