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General Information 5-bay 3.5 /2.5 SATA expansion Easily add 5 additional driv... General Information 5-bay 3.5 /2.5 SATA expansion Easily add 5 additional drive bays to Synology DiskStation. Supporting both 2.5 and 3.5 SATA drives DX517 is a flexible solution supporting on-the-fly volume expansion or serving as a local backup... more

Online volume expansion. Managed from DiskStation Manager on the host NAS, the... Online volume expansion. Managed from DiskStation Manager on the host NAS, the additional bays in the DX517 are immediately ready to be used once connected. On-the-fly volume expansion ensures that storage and services on the host are not... more