Synology DiskStation RX418

Synology Expansion Unit 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.

Hardware Specifications

Applied Models

RS818(RP)+
RS815(RP)+
RS816
RS815
Some models support independent volumes creation only. Please find more details here.

Note 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 48 TB (12 TB drive x 4) (Capacity may vary by RAID types)
Hot Swappable Drive
RAID Management through Synology DSM

External Ports
eSATA port 1

Appearance
Size (Height x Width x Depth) 44 mm x 480 mm x 325 mm
Weight 4.28 kg

Power
Power Recovery Synchronized with the Synology RackStation
Power Supply Unit / Adapter 100W
AC Input Power Voltage 100V to 240V 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)
Note Power consumption is measured when 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)
Note Noise 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%

Certification

FCC
CE
BSMI
EAC
VCCI
RCM
KC