Effortless capacity expansion for Synology DiskStation solutions on-the-fly. 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 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.

Technical details
Sustainability certificates	RoHS
Ports & interfaces
USB connectivity	N
eSATA ports quantity	1
Weight & dimensions
Width	248 mm
Depth	233 mm
Height	157 mm
Weight	3.91 kg
Power
Power supply unit (PSU) capacity	200 W
Number of power supply units	1
Power consumption (typical)	29.9 W
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Operational conditions
Operating temperature (T-T)	5 - 40 °C
Operating relative humidity (H-H)	5 - 95%
Storage temperature (T-T)	-10 - 70 °C
Storage relative humidity (H-H)	5 - 95%
Storage
Storage drives installed	N
Installed storage drive type	N
Supported storage drive types	HDD & SSD
Number of storage drives supported	5
Maximum supported storage capacity	80 TB
Supported storage drive interfaces	Serial ATA, Serial ATA II, Serial ATA III
Storage drive sizes supported	2.5,3.5"
Hot-swap drive bays	Y
Packaging content
Cables included	AC, eSATA
Design
Chassis type	Desktop
Product colour	Black
LED indicators	Alarm, Power, Status
Number of fans	2 fan(s)
Noise level	21.5 dB
Certification	FCC B, CE B, BSMI B
Performance
Device class	Small & Medium Business
Compatible products	Synology DS1817+, DS1517+
Logistics data
Harmonized System (HS) code	84717020