Expansion Unit RX418

Expansion Unit RX418

4-bay 1U rackmount expansion unit for 1U RackStation

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.

Hardware Specifications 
Applied ModelsRS1219+
RS819
RS818RP+
RS818+
RS816
RS815RP+
RS815+
RS815
RS217
NotesSome models support independent volumes creation only. Please find more details here.
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 Bays4
Compatible Drive Type* (See all supported drives)3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity56 TB (14 TB drive x 4) (Capacity may vary by RAID types)
Hot Swappable Drive
RAID Management through Synology DSM
External Ports
eSATA Port1
Appearance
Size (Height x Width x Depth)44 mm x 480 mm x 325 mm
Weight4.28 kg
Rack Installation Support4-post 19" rack (Synology Rail Kit -  RKM114 / RKS1317 )
2-post 19" rack (direct mounting)
NotesThe rail kit is sold separately.
Power
Power RecoverySynchronized with the Synology RackStation
Power Supply Unit / Adapter100W
AC Input Power Voltage100V to 240V AC
Power Frequency50/ 60Hz, Single Phase
Power Consumption*23.26 W (Access) 
6.39 W (HDD Hibernation)
British Thermal Unit79.42 BTU/hr (Access) 
21.82 BTU/hr (HDD Hibernation)
NotesPower consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Temperature
Operating Temperature5°C to 35°C (40°F to 95°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
Others
System Fan40 mm x 40 mm x 3 pcs
Noise Level*25.1 dB(A)
NotesNoise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
CertificationFCC
CE
BSMI
EAC
VCCI
RCM
KC
Warranty3-year hardware warranty, extendable to 5-year coverage - EW201
NotesThe warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment & Packaging
EnvironmentRoHS Compliant
Packaging ContentMain Unit X 1
User's Guide X 1
Accessory Pack X 1
AC Power Cord X 1
Expansion Cable: eSATA X 1
Optional AccessoriesSynology Rail Kit Sliding - RKS1317
Synology Rail Kit Mounted - RKM114