Synology DX517 5 Bays Expansion Unit for Synology NAS

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.

Applied Models

Supports creating volumes across different units

• 23 series:DS1823xs+, DS923+, DS723+
• 22 series:DS1522+
• 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+II, DS716+
• 15 series:DS1815+, DS1515+, DS1515

Supports creating volumes on a single unit only

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

Notes

• For more information on the compatibility of each expansion unit, please refer to this article.
• Please upgrade to DSM 6.2.1-23824-5 or later version before using it with 15 and 16 series models (excluding DS1515, DS716+, and DS716+II).
• To have better performance, we recommend creating storage volumes physically located within the same NAS or Expansion Unit, rather than creating volumes across your NAS and Expansion Unit.

Storage

Drive Bays

5

Compatible Drive Type* (See all supported drives)

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

Hot Swappable Drive*

RAID Management through Synology DSM

Notes · Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.

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 · 200 W

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)

Notes · Power consumption is measured when it is 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)

Notes · Noise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the 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
• BIS

Warranty

3-year hardware warranty, extendable to 5 years with EW201

Notes

• Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions.
• The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)