Expansion Unit DX513

Volume Expansion & Backup

When running out of hard drive capacity on the Synology DiskStation, Synology DX513 provides an easy way to immediately scale capacity by additional 5 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.

The Synology DX513 can be used as a dedicated local backup solution for the Synology DiskStation.  When created as a separate volume, the DX513 provides a great backup solution to its local hard disks in case of failure.

Reliable Plug-n-use Design

The Synology DX513 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 DX513 to operate as the internal hard drives of the DiskStation.


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

Synology DX513 Datasheet