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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.
| Storage | |
|---|---|
| Hot-swap drive bays | Yes |
| Storage drive sizes supported | 2.5,3.5" |
| Supported storage drive interfaces | Serial ATA, Serial ATA II, Serial ATA III |
| Maximum supported storage capacity | 80 TB |
| Number of storage drives supported | 5 |
| Supported storage drive types | HDD & SSD |
| Total installed storage capacity | 0 TB |
| Installed storage drive type | No |
| Storage drives installed | No |
| Ports & interfaces | |
|---|---|
| eSATA ports quantity | 1 |
| USB connectivity | No |
| Design | |
|---|---|
| Certification | FCC B, CE B, BSMI B |
| Compatible products | Synology DS1817+, DS1517+ |
| Number of fans | 2 fan(s) |
| Noise level | 21.5 dB |
| LED indicators | Alarm, Power, Status |
| Product colour | Black |
| Chassis type | Desktop |
| Performance | |
|---|---|
| Device class | Small & Medium Business |
| Power | |
|---|---|
| AC input frequency | 50 - 60 Hz |
| AC input voltage | 100-240 V |
| Power consumption (typical) | 29.9 W |
| Number of power supply units | 1 |
| Power supply unit (PSU) capacity | 200 W |
| Weight & dimensions | |
|---|---|
| Weight | 3.91 kg |
| Height | 157 mm |
| Depth | 233 mm |
| Width | 248 mm |
| Logistics data | |
|---|---|
| Harmonized System (HS) code | 84717020 |
| Packaging content | |
|---|---|
| Cables included | AC, eSATA |
| Operational conditions | |
|---|---|
| Storage relative humidity (H-H) | 5 - 95% |
| Storage temperature (T-T) | -10 - 70 °C |
| Operating relative humidity (H-H) | 5 - 95% |
| Operating temperature (T-T) | 5 - 40 °C |
| Other features | |
|---|---|
| Compliance certificates | RoHS |

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