5-bay 3.5”/2.5” SATA expansion
Easily add 5 additional drive bays to Synology DiskStation1. 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 destination.
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 interrupted during volume expansion.
Hot-swappable drive tray design
The hot-swappable drive trays of DX517 allow easy drive installation and replacement without powering down the system. Screwless drive tray design reduces the time needed for system setup.
Dedicated local backup solution
Synology DX517 can be used as a dedicated local backup solution for the Synology DiskStation. When created as a separate volume, the DX517 provides a great backup solution to its local hard disks in case of system failure.
Compatible Drive Type
3.5″ SATA HDD
2.5″ SATA HDD
2.5″ SATA SSD
Maximum Internal Raw Capacity
50 TB (10 TB HDD x 5) (Capacity may vary by RAID types)
Hot Swappable Drive
RAID Management through Synology DSM
Synchronized with the Synology DiskStation
Power Supply Unit / Adapter
AC Input Power Voltage
100V to 240V AC
50/60 Hz, Single Phase
29.9 W (Access)
2.4 W (HDD Hibernation)
British Thermal Unit
102.02 BTU/hr (Access)
8.19 BTU/hr (HDD Hibernation)
Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
5C to 40C (40F to 104F)
-10C to 70C (15F to 155F)
5% to 95% RH
80 mm x 80 mm x 2 pcs
Easy Replacement System Fan
Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear Background noise: 16.49-17.51 dB(A) Temperature: 24.25-25.75oC Humidity: 58.2-61.8%