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Synology DX517 Volume Expansion Box for Synology DiskStation NAS Server
NAS server
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Synology DX517

Volume Expansion Box for Synology DiskStation NAS Server

6 customer reviews
579€95
Recycling charge of 1€02
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In stock in over 15 days
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Overview

An Expansion Unit to Increase the Capacity of Your Synology DiskStation!

Easily add 5 more drive bays to a Synology DiskStation. With support for 2.5" and 3.5" SATA drives, the DX517 is a flexible solution that can support on-the-fly volume expansion as well as serve as a local backup destination.

Online Volume Expansion
The DX517's additional bays, managed from DiskStation Manager on the host NAS, are immediately ready for use upon login. On-the-fly volume expansion ensures that storage and services are not interrupted during volume expansion.

Hot-swappable disk tray design
The DX517's hot-swappable disk trays allow for easy installation and replacement of disks without having to power down the system. The screwless disk tray design reduces system installation time.

A dedicated local backup solution
The 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 very useful backup solution to its local disks in case of system failure.


Key Features :

  • Slots for 5 x 3.5" SATA HDD, 2.5" SATA HDD, 2.5" SATA SSD
  • Hot swappable hard drives
  • Heat dissipation via 2 x 80 mm fans
  • 3-year manufacturer's warranty
  • Compatibility list
Specifications
Select your criteria

General information

Product name

 Synology DX517

Brand

 Synology

Model

 DX517

Network

DLNA certification

 No

Storage

Capacity

 0 GB

Internal interface

 5 X Serial ATA 6Gb/s (SATA Revision 3)

Hard drive

 No

Number of discs

 0

Max number of discs

 5

RAID supported

 Yes

Connector(s)

 1 X eSATA

Physical characteristics

Rackable

 No

Sound level

 21.5 dB

Consumption

 29.9 W

Width

 248 mm

Height

 157 mm

Depth

 233 mm

Weight

 3.91 kg

Warranties

Commercial warranty
Seller 2 years

Legal warranty
See terms & conditions

Safety Information

Responsible person

 Synology GmbH

Postal address

 Grafenberger Allee 295, 40237 Düsseldorf, Deutschland

Electronic Address

 de_sales@synology.com

See all Synology products

See Synology NAS server section

Product referenced on 13 Apr 2017

Customer reviews
Global rating
10/10
based on 6 reviews Editorial and moderation guide
  • 100%
    6 reviews
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  • by JeanFrancoisF
    Posted on 9 Jul 2025
    Bought on 8 Jun 2025 from LDLC
    Number of reviews: 6 Average rating: 10

    Additional storage

    Package received quickly and superbly packaged. I use the Synolgy DX517 in addition to my Synology DS1621+. Both work perfectly well. Integration is simple, a power supply, an eSata cable and the NAS recognises it. I put the extension on the NAS and it doesn't move. All I have to do is set up the RAID configuration etc... and it's perfect.
    I am always delighted with Synology products, especially in terms of silence, power consumption and size. Great product.

    Review automatically translated
  • by Jerome G
    Posted on 26 Jan 2022
    Bought on 7 Jan 2022 from LDLC
    Number of reviews: 24 Average rating: 9

    Ticklish on records

    Does not accept all disks (there are mechanical deceptions), so it is advisable to take disks for NAS. Connects with a cable (included) that screws to the NAS for e-sata. The NAS can put it to sleep/shutdown/restart so the start button will not be used often. Quiet fans. Beware, the chargers are not the same as on the DS920, but it's still a 3 1/2 drive assembly without screws: happiness.

    Review automatically translated
  • by Philippe M
    Posted on 20 Dec 2021
    Bought on 22 Nov 2021 from LDLC
    Number of reviews: 3 Average rating: 9

    Good extension

    Added to a ds920+, not quite the same shape, and non-interchangeable drive slots, LEDs not in the same place (on each drive) but once connected and the 920+ rebooted (and yes, you have to reboot) is instantly recognised.
    Offers 5 additional bays, which allow you to create a volume and add a hot plug disk for the existing volume or the new one, allows to extend the old one, etc...
    In short, essential if you hope to grow in volume, rather than change all your disks. And allows you to take advantage of SSD caches just in case.

    Review automatically translated
  • by Nekkar251
    Posted on 20 Jul 2021
    Bought on 9 Jun 2021 from LDLC
    Number of reviews: 13 Average rating: 9

    Excellent product

    As described, purchased for use with a DS918+ which recognises it very well. Easy to install.

    I recommend it.

    Review automatically translated
  • by AlexandreM
    Posted on 21 Apr 2020
    Bought on 22 Mar 2020 from LDLC
    Number of reviews: 7 Average rating: 6

    Perfect

    Product as described, super easy to set up.
    For a shr volume that you create in several times, start by placing the smallest HDDs in it ;-).

    Review automatically translated
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