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Synology DX517 5-Bay Expansion Enclosure Unit

  • Synology
  • DX517
  • New
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Device Type Storage enclosure
Installed Drives / Modules Qty 0
Supported Drives / Modules/ Bays Qty 5
Hard Drive
Type No HDD - hot-swap
Expansion / Connectivity
Expansion Bays 5 (total) / 5 (free) x hot-swap - 2.5" / 3.5" shared
Host Interface eSATA
Form Factor External
Features Built-in 2 cooling fans
Cables Included 1 x eSATA cable
Compliant Standards FCC Class B certified RoHS BSMI Class B
TAA Compliant Yes
Power Device Internal power supply
Voltage Required AC 120/230 V - 50 - 60 Hz
Power Consumption Operational 29.9 Watt
Power Provided 200 Watt
Dimensions & Weight
Width 9.8 in
Depth 9.2 in
Height 6.2 in
Weight 8.62 lbs
Environmental Parameters
Min Operating Temperature 41 °F
Max Operating Temperature 95 °F
Humidity Range Operating 5 - 95%
Sound Emission 30 dBA

Synology DX517 5-Bay Expansion Unit

Explore the Synology DX517 External HDD/SSD, a versatile 5-Bay Expansion Enclosure designed for seamless volume expansion and local backups. Learn about its features, compatibility, and how it transforms your DiskStation experience.

In the realm of storage solutions, Synology DX517 emerges as a game-changer, elevating DiskStation's capabilities. Let's delve into the dynamic features and benefits that make this expansion enclosure a must-have for storage enthusiasts.

Built for Expansion and Security:

Built to support on-the-fly volume expansion and local backups, the DX517 adds/supports 3.5"/2.5"  5-SATA drive bays to select DiskStation solutions. With hot-swappable and screwless drive bays, it ensures easy installation and replacement without system downtime. The inclusion of an AC power cord, accessory pack, and eSATA expansion cable enhances its user-friendly design.

5-Bay 3.5"/2.5" SATA Expansion

Adding five extra drive bays to your Synology DiskStation DS1817+, DS1823XS+ and DS1517+. The DX517 supports a variety of SATA hard drives and SSDs. Its flexibility allows on-the-fly volume expansion or utilization as a reliable local backup destination, offering adaptability to your evolving storage needs.

Online Volume Expansion:

Managed through DiskStation Manager on the host NAS, the DX517's additional bays are immediately ready for use upon connection. On-the-fly volume expansion ensures uninterrupted storage and services on the host during the expansion process, promoting a seamless user experience.

Hot-Swappable Drive Tray Design:

The DX517's hot-swappable drive trays facilitate installation and replacement without powering down the system. The screwless drive tray design reduces setup time, emphasizing efficiency and convenience in managing your storage infrastructure.

Dedicated Local Backup Solution:

Transform your DX517 into a dedicated local backup solution for the Synology DiskStation DS1817+ or DS1517+. Creating a separate volume, the DX517 becomes a robust backup alternative to local hard disks, ensuring data integrity in case of system failure.

Applied Models: Supporting Diverse Configurations

Creating Volumes Across Different Units

  • 21 Series: DS1821+, DS1621xs+, DS1621+, DVA3221
  • 20 Series: DS1520+, DS920+, DS720+
  • 19 Series: DS1819+, DS1019+, DVA3219
  • 18 Series: DS1618+, DS918+, DS718+, NVR1218
  • 17 Series: DS1817+, DS1817, DS1517+, DS1517
  • 16 Series: DS916+, DS716+, DS716+II
  • 15 Series: DS1815+, DS1515+, DS1515

Creating Volumes On a Single Unit

  • 18 Series: DS218+
  • 16 Series: DS216+, DS216+II, NVR216
  • 15 Series: DS415+


Q: Is the DX517 compatible with all DiskStation models?

Yes, the DX517 is compatible with select DiskStation models, including DS1817+, DS1517+, and more. Refer to the Applied Models section for detailed compatibility.

Q: How does on-the-fly volume expansion work?

On-the-fly volume expansion, managed through DiskStation Manager, ensures immediate usability of additional bays without interrupting storage and services on the host NAS.

Q: Can I replace drives without turning off the system?

Absolutely. The hot-swappable drive trays allow drive installation and replacement without powering down the system, ensuring continuous operation.

Q: Can the DX517 be used as a local backup solution?

Yes, the DX517 can serve as a dedicated local backup solution, offering a reliable backup alternative to local hard disks in case of system failure.

Q: Are there different series supported for creating volumes?

Yes, the DX517 supports creating volumes across different units, including 21 Series, 20 Series, 19 Series, 18 Series, 17 Series, 16 Series, and 15 Series.

Length14.8 in
Width13.5 in
Height12.8 in
Weight12.00 lbs
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