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The Synology DX517 5-Bay Diskless Expansion Unit (DX517) lets you expand your Synology DiskStation NAS by up to five additional hard drives. The Synology DX517 expansion comes with five disk bays compatible with 3.5" and 2.5" SATA HDDs and SSDs, one eSATA port, and two 80mm x 80mm x 20mm fans.
Add more drives for your NAS to accommodate more data or to enhance RAID capabilities. The DX517 is compatible with the DiskStation DS1517+ and the DiskStation DS1817+. It syncs automatically with the host NAS once attached, allowing seamless management via Synology's Disk Station Manager (DSM) software.
Screwless, hot-swappable drive trays allow for easy installation of 3.5"/2.5" SATA HDDs/SSDs without having to turn off and rebooting the system, making on-the-fly NAS expansion configuration uncomplicated and quick.
The Synology DX517 5-Bay Diskless Expansion Unit lets you use up to five additional drives to your Synology network storage solution. Install more drives easily to expand your Synology DiskStation's RAID volume or use the extra drives as local backup destinations.
Read more about the Synology DX517 5 Bay Expansion Unit on Synology's site HERE.
NOTE: This is an expansion unit for DS1517+ & DS1817+ NAS Models. Will not work independantly as a NAS.