Synology DX517 Desktop Disk Array

Synology DX517 | 5-Bay SATA Expansion Array for DiskStation

The Synology DX517 disk array Desktop Black is a 5-bay expansion enclosure designed to seamlessly increase storage capacity for compatible Synology DiskStation NAS units. Supporting both 2.5″ and 3.5″ SATA drives, this unit enables on-the-fly volume expansion without interrupting services, making it ideal for growing small and medium business storage needs.

Slim Specs Table

Effortless Capacity Expansion for Growing Storage Needs

The DX517 provides a straightforward solution for businesses experiencing data growth. By connecting to compatible Synology DiskStation units via a single eSATA port, you can immediately add five additional drive bays to your existing NAS infrastructure. This expansion happens without requiring system downtime, allowing continuous operation of critical services while increasing available storage.

Hot-Swappable Design for Simplified Maintenance

Drive maintenance becomes significantly easier with the DX517’s hot-swappable tray design. Each tray supports tool-less installation and removal, meaning you can replace drives without powering down the entire system. This feature proves particularly valuable in business environments where continuous operation is essential and scheduled maintenance windows are limited.

Dedicated Local Backup Destination

Beyond simple expansion, the DX517 functions as a dedicated backup destination for your Synology DiskStation. When configured as a separate volume, it provides an additional layer of data protection. In the event of primary system failure, having a local backup solution ensures business continuity and faster recovery times compared to cloud-only backup strategies.

Quiet Operation for Office Environments

Operating at just 21.5 dB, the DX517 maintains a low noise profile suitable for office environments. The unit features dual fans that provide adequate cooling while remaining unobtrusive. This quiet operation makes it appropriate for deployment in open-plan offices, server rooms, or any workspace where noise levels matter.

Box contents

• Synology DX517 expansion enclosure
• AC power cable
• eSATA cable

Check before you buy

• Confirm your Synology DiskStation model compatibility (DS1817+ or DS1517+ required)
• Verify you have available eSATA port on your host NAS
• Check your drive inventory supports 2.5″ or 3.5″ SATA form factors
• Ensure adequate space for the 248 x 233 x 157 mm unit

Frequently Asked Questions

Q: Can I mix different drive sizes and capacities in the DX517?

A: Yes, you can mix 2.5″ and 3.5″ drives of different capacities, though for optimal performance consider using drives of similar specifications.

Q: Does the DX517 require its own IP address?

A: No, the DX517 is managed entirely through your host Synology DiskStation’s DiskStation Manager interface.

Q: Can I expand my volume while the DX517 is being added?

A: Yes, the DX517 supports on-the-fly volume expansion, allowing you to add drives without service interruption.

Q: What happens if the DX517 loses power?

A: If power is lost, your host NAS will continue operating, though access to the DX517’s drives will be unavailable until power is restored.

Q: Is the DX517 rack-mountable?

A: No, the DX517 has a desktop chassis design and is not designed for rack mounting.

The Consultant’s verdict & warranty

The Synology DX517 disk array Desktop Black represents a practical expansion solution for businesses already invested in the Synology ecosystem. Its hot-swappable design, quiet operation, and on-the-fly expansion capabilities make it particularly suitable for growing SMBs that need to scale storage without service disruption. Covered by the standard Manufacturer Warranty.