Synology DX517 Expansion

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Pros and cons

According to our NAS expansion expert
  • Pros:
    Expand the capacity of your existing NAS with 5 extra hard drive slots.
  • Pros:
    The device supports RAID setups, with which you can safely store your files.
  • Pros:
    The expansion automatically switches to standby mode to save energy and relieve your hard drives.
  • Con:
    The device only works with your existing Synology NAS.
Product Expert NAS expansions

The Synology DX517 Expansion provides additional storage space for your Synology DS1517(+) or the Synology DS1817(+) NAS. Install up to 5 internal hard drives with a maximum storage capacity of 50TB. If you connect this expansion to your NAS, the device works immediately without you having to format the disks in your NAS. Manage them in RAID setups thanks to the Synology DSM software. Connect the device via the included eSATA cable. Does your NAS switch to energy-efficient standby mode? The DX517 also conforms to this mode to save power, and reduce the burden on your internal hard drives.

Included by default

  • Manual
  • Accessory pack
  • Power cable
  • eSATA cable

Complete your purchase



Product number
Manufacturer code
5 years
Warranty type
Carry-in warranty


Brand compatibility

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