Synology DX213 – Expansion Unit

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Synology® DX213 delivers an effortless solution for volume expansion and data backup for selected Synology DiskStation models. The DX213 seamlessly scales up the storage capacity of the DiskStation by additional 2 hard drives on-the-fly when connected directly to an expansion cable.

  • Online Volume Expansion
  • Dedicated Local Backup Solution
  • Reliable Plug-n-use Design
  • Auto power on/off with DiskStation Models

Volume Expansion & Backup

When running out of hard drive capacity on the Synology DiskStation, Synology DX213 provides an easy way to immediately scale capacity by additional 2 hard drives. The RAID volume on the Synology DiskStation can be expanded directly without having to reformat the existing hard drives, ensuring the Synology DiskStation continues its service during the capacity expansion.

Synology DX213 can be used as a dedicated local backup solution for the Synology DiskStation. When created as a separate volume, the Synology DX213 provides a great backup solution to its local hard disks in case of system failure.

NAS Servers No. of Applicable Expansion Unit(s) Max. No. of HDDs
X2 unit 12 pcs
DS1512+ X2 unit 9 pcs
DS713+ X1 unit 4 pcs

Reliable Plug-n-use Design

The Synology DX213 is connected to the Synology DiskStation using an expansion cable with custom-designed connectors on both ends, ensuring a reliable connection and maximum throughput. The 3.0 Gb/sec connection speed allows the hard drives in the connected Synology DX213 to operate as the internal ones of Synology DiskStation.

Green & Easy to Manage

Deep Sleep mode can be manually configured 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 hard disk. DX213 can also automatically power on/off when paired with selected DiskStation, so no user intervention is needed to keep the system running intelligently and efficiently.


  • Internal HDD : 3.5″ SATA or 2.5″ SATA X 2
  • Expansion Port X 1
  • Size : 165 x 100 x 225.5 (mm)
  • Weight : 0.87 kg
  • System Fan : 92 x 92 mm
  • Noise Level1 : 19dB(A)
  • Power Recovery : Sync with the paired DiskStation (Default Mode)
  • AC Input Power Voltage : 100V to 240V AC
  • Power Frequency : 50/60 Hz, Single Phase
  • Operating Temperature : 5°C to 35°C (40°F to 95°F)
  • Storage Temperature : -10°C to 70°C (15°F to 155°F)
  • Relative Humidity : 5% to 95% RH
  • Maximum Operating Altitude : 6,500 feet
  • Supported Models3 : DS710+, DS712+, DS713+, DS1010+, DS1511+, DS1512+, DS1812+; Use as independent volume: DS112, DS112+, DS212+, DS213+, DS412+, DS413

Power Consumption

  • 21W (Access), 2W (Deep Sleep)2

RAID Management

  • Managed through the Synology DSM


  • FCC: Class B
  • CE : Class B
  • BSMI : Class B


  • RoHS Compliant

Package Content

  • DX213 Main Unit
  • User’s Guide
  • Assembling Kit
  • AC Power Cord
  • AC Power Adapter
  • Expansion Cable


  • 2 years