Is the DX517 a standalone NAS?

No. It is an expansion unit with no CPU or network port. It only works attached to a compatible Synology DiskStation over eSATA.

Which Synology units support it?

Synology lists the DS1817+ and DS1517+ as compatible hosts. Check your model's expansion support before buying.

Five bays accept 2.5-inch or 3.5-inch SATA drives. Drives are not included.

What comes in the box?

The DX517 enclosure, an accessory pack, an AC power cord, an eSATA expansion cable and a quick installation guide.

Does it need its own power outlet?

Yes. It has its own power supply and cooling fan, so plan for a nearby outlet and the eSATA cable run to the host.

What do buyers say about the Synology DX517 5-Bay Network-Attached Storage Server?

Rated 5 out of 5 from 2 ratings.

Synology DX517 5-Bay Network-Attached Storage Server

Best price now

$548.88at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

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Synology DX517 5-Bay Network-Attached Storage Server

Best price now

$548.88at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $548.88 at Walmart on Nov 9.

Our take on the Synology DX517 5-Bay Network-Attached Storage Server

The DX517 is a 5-bay expansion unit for Synology DiskStation NAS, not a standalone server. It connects over eSATA and adds five 2.5"/3.5" SATA bays to a compatible host, letting you grow storage without replacing the main unit. It is the practical choice for owners of supported DiskStations who have run out of bays; buyers without a compatible Synology host get nothing from it. It is a niche accessory, so it competes less with other NAS and more with buying a larger enclosure outright.

Best forOwners of a compatible Synology DiskStation who need more drive baysGrowing a media or backup library without replacing the main NASAdding a second storage pool or volume to an existing setup

Pros

Adds five hot-swappable 2.5"/3.5" SATA bays to a supported host
eSATA link keeps the expansion under the host's management
Dedicated cooling fan for the added drives
Compact desktop footprint at roughly 6.2 x 9.8 x 9.2 inches
Three-year limited warranty

Cons

Works only with specific Synology hosts, not as a standalone NAS
eSATA cable limits placement and ties it to one host
No network port or processor of its own
Drive cost adds up on top of the enclosure

Synology DX517 5-Bay Network-Attached Storage Server prices at every store

WalmartNew
In stockSold by Garner SupplyReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$548.88Free shippingChecked Nov 9
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About the Synology DX517 5-Bay Network-Attached Storage Server

The Synology DX517 is an external expansion enclosure with five drive bays. Each bay takes a 2.5-inch or 3.5-inch Serial ATA drive. It connects to a compatible Synology DiskStation server through an eSATA host interface.

A cooling fan is built in. The enclosure is RoHS certified and has a 3-year limited warranty.

Drive bays: 5 total, each 2.5"/3.5"
Drives supported: 5
Drive interface: Serial ATA
Host interface: eSATA
Cooling: Cooling fan
Form factor: External
Dimensions: 6.2" H x 9.8" W x 9.2" D
Weight: Approximately 8.62 lb
Color: Black
Compatibility: Synology DiskStation DS1817+, DS1517+
Certification: RoHS
Warranty: 3-year limited
In the box: DX517 drive enclosure, accessory pack, AC power cord, eSATA expansion cable, quick installation guide

Specifications

color: BlackSource
size: One SizeSource

Questions and answers

Is the DX517 a standalone NAS?: No. It is an expansion unit with no CPU or network port. It only works attached to a compatible Synology DiskStation over eSATA.
Which Synology units support it?: Synology lists the DS1817+ and DS1517+ as compatible hosts. Check your model's expansion support before buying.
What drives fit?: Five bays accept 2.5-inch or 3.5-inch SATA drives. Drives are not included.
What comes in the box?: The DX517 enclosure, an accessory pack, an AC power cord, an eSATA expansion cable and a quick installation guide.
Does it need its own power outlet?: Yes. It has its own power supply and cooling fan, so plan for a nearby outlet and the eSATA cable run to the host.
Where is the Synology DX517 5-Bay Network-Attached Storage Server cheapest?: At Walmart, for $548.88, as of our latest check.
What do buyers say about the Synology DX517 5-Bay Network-Attached Storage Server?: Rated 5 out of 5 from 2 ratings.