Synology DiskStation Expansion Unit DX517

Synology Expansion Unit DX517

Effortless capacity expansion for Synology DiskStation1 solutions on-the-fly.

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.

Hardware Specifications

Applied Models

DS1817+
DS1517+
DS918+
DS718+
DS1817
DS1517
NVR1218
Some models support independent volumes creation only. Please find more details here.

Storage
Drive Bays 5

Compatible Drive Type* (See all supported drives)

3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD

Maximum Internal Raw Capacity 60 TB (12 TB drive x 5) (Capacity may vary by RAID types)
Hot Swappable Drive
RAID Management through Synology DSM

External Ports
eSATA port 1

Appearance
Size (Height x Width x Depth) 157 mm x 248 mm x 233 mm
Weight 3.91 kg

Power
Power Recovery Synchronized with the Synology DiskStation
Power Supply Unit / Adapter 200W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 29.9 W (Access)
2.4 W (HDD Hibernation)
British Thermal Unit 102.02 BTU/hr (Access)
8.19 BTU/hr (HDD Hibernation)
Note Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).

Temperature
Operating Temperature 5°C to 40°C (40°F to 104°F)
Storage Temperature -10°C to 70°C (15°F to 155°F)
Relative Humidity 5% to 95% RH

Others
System Fan 80 mm x 80 mm x 2 pcs
Easy Replacement System Fan
Noise Level* 21.5 dB(A)
Note 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: 24.25-25.75˚C; Humidity: 58.2-61.8%

Certification

FCC
CE
BSMI