Synology Expansion Unit 4-Bay 3.5in Diskless NAS (1U Rack) for Scalable Models (SMB) (RX418)
4‑bay 1U rackmount expansion unit (RX418) adds hot‑swappable 3.5”/2.5” SATA HDD/SSD bays, 1 eSATA port, 100 W PSU with synchronized power recovery, 25.1 dB(A) noise, 44 mm × 480 mm × 325 mm, 4.28 kg, 3‑yr warranty.
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Expansion Unit RX418
4-bay 1U rackmount expansion unit for 1U RackStation
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
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
YES
Hot Swappable Drive
YES
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: 24.25-25.75C; Humidity: 58.2-61.8%
Certification
FCC Class A
CE Class A
BSMI Class A
EAC
VCCI
RCM
KC
Warranty
3 Year Hardware Warranty
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
