Synology RX418 4-Bay NAS Expansion Unit

Category - Expansion Unit
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Synology RX418 – 4-Bay Rackmount Expansion Unit

The Synology RX418 is a compact 1U rackmount expansion unit designed to extend the storage capacity of compatible Synology RackStation NAS systems. By adding four additional drive bays, it provides an easy and cost-effective way to scale storage without replacing your existing NAS. With a plug-and-play design and full integration with Synology DiskStation Manager (DSM), the RX418 allows seamless online expansion and centralized management.

 

Hardware Specifications

Applied Models

Supports creating volumes across different units
  • 22 series:RS822RP+, RS822+
  • 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
  Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD

 

  Hot Swappable Drive*  
  RAID Management through Synology DSM  
  Notes Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.

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/RKS-02)
  • 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 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)
  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)
  Operating Humidity 8% to 80% RH
  Storage 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
  • BIS

 

Warranty

3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus
  Notes
  • Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions.
  • 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

 

Specification

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