Expansion Unit DX517
Easy continuous capacity expansion for Synology DiskStation.
Link to the manufacturer website: Compatibility list for this model:
Function
3.5 ?/ 2.5? SATA expansion with 5 bays
Easily add 5 more disk slots to Synology DiskStation1. The DX517 supports both 2.5 ?and 3.5? SATA drives, providing a flexible solution that supports continuous volume expansion or serves as a local backup destination. Volume extension online
Because the other DX517 slots are managed by DiskStation Manager running on the host NAS device, they are ready to use immediately after connection. Continuous volume expansion ensures that storage and service operations on the host are not interrupted during volume expansion. Possibility to replace disc trays during operation
The ability to replace disc trays while the DX517 is running allows for easy installation and replacement of discs without shutting down the system. The screw-free design of the disc trays reduces the time required to set up the system. Dedicated solution for local backup
Synology DX517 can also serve as a dedicated solution for local backup of Synology DiskStation. When created as an independent volume, the DX517 is an excellent backup solution for local hard drives in the event of a system failure. EXTENDED WARRANTY Synology devices are made of quality parts and are designed for long-term operation. This service add-on extends the original limited warranty on Synology NAS hardware to provide extended coverage.

– extended warranty + 2 years
ATC code – 1129953349 – Synology Extended Warranty – EW201 The extended warranty must be registered within 30 days of purchase of the product for which this warranty was purchased. It is not possible to return. Link to the manufacturer website: PACKAGE CONTENTS
– Main unit X 1
– Add-on package X 1
– AC power cord X 1
– Extension cable: eSATA X 1
– Quick Installation Guide X 1
SPECIFICATIONS Hardware Appearance Size (height x width x depth): 157 mm x 248 mm x 233 mm Weight: 3.91 kg Other Noise level: 21.5 dB (A) Power supply unit/adapter: 200W AC input voltage: 100V to 240V AC Power frequency: 50/60 Hz, Single phase Power consumption: 45.1 W (running), 16.5 W (hard disk hibernation), 2 W (system hibernation)
153.89 BTU/hr (running), 56.30 BTU/hr (hard disk hibernation), 6.82 BTU/hr (system hibernation) Ambient temperature Operating temperature: 5 ? C to 40 ? C (40 ? F to 95 ? F) Storage temperature: -10 ? C to 70 ? C (-5 ? F to 155 ? F) Relative humidity: 5% to 95% RH Certifications: FCC Class A, CE Class A, BSMI Class A Warranty: Comment
Noise test environment: At full load with Seagate 1 TB ST31000520AS hard drives in sleep mode; two GRAS 40AE microphones, each located 1 meter from the front and back of the Synology NAS server; background noise: 16.49-17.51 dB (A); temperature: 24.25-25.75 ? C; humidity: 58.2-61.8%
More parameters and information can be found on the manufacturer website.