Is the DX525 a standalone NAS?

No. It is an expansion unit that attaches to a compatible Synology DiskStation and adds five drive bays to that host.

It takes 3.5-inch or 2.5-inch SATA hard drives and SSDs in its five bays.

Can I expand storage without downtime?

Synology says new volumes can be added or existing volumes expanded through DSM without interrupting service.

How does it compare with buying a bigger NAS?

The DX525 keeps your existing setup and data in place and adds bays. A larger NAS replaces the host and brings its own processor and memory.

What is the warranty?

It carries a 3-year limited hardware warranty, extendable to 5 years in select markets.

Where is the Synology 5-Bay NAS DiskStation DX525 cheapest?

At Walmart, for $519.99, as of our latest check.

Synology 5-Bay NAS DiskStation DX525

Best price now

$519.99at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Synology 5-Bay NAS DiskStation DX525

Best price now

$519.99at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $519.99 at Walmart on Nov 9.

Our take on the Synology 5-Bay NAS DiskStation DX525

The Synology DX525 is a 5-bay expansion unit, not a standalone NAS. It connects to a compatible Synology DiskStation and adds five 3.5-inch or 2.5-inch SATA drive bays so you can grow storage without replacing the main unit. It is aimed at owners of supported DiskStations who have run out of bays and want more capacity in one chassis. Rivals in this space are other vendor-locked expansion units, so the DX525 only makes sense if your DiskStation supports it.

Best forOwners of a compatible DiskStation who have filled every internal bayGrowing photo, video or backup libraries that need more raw capacityUsers who want to add volumes without rebuilding their main NAS

Pros

Adds five SATA bays for HDDs or SSDs in one unit
Volumes can be created or expanded through DSM without service interruptions
Setup uses the same DSM tools as the main NAS
Backed by a 3-year limited hardware warranty, extendable to 5 years in select markets

Cons

Not a standalone NAS; it needs a compatible Synology host
Only works with supported DiskStation models
Drive cost is separate and can exceed the unit itself
Adds another box, power supply and cable to manage

Synology 5-Bay NAS DiskStation DX525 prices at every store

WalmartNew
In stockSold by KART ITReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$519.99+ $9.98 shippingChecked Nov 9
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About the Synology 5-Bay NAS DiskStation DX525

The Synology DiskStation DX525 is a 5-bay expansion unit for a Synology DiskStation NAS. It adds room for five more 3.5" or 2.5" SATA hard drives or SSDs.

Storage is set up through Synology DSM's unified tools, so new storage can be configured in minutes. New volumes can be added, or existing volumes expanded, without interrupting service.

Bays: 5
Drive types: 3.5" and 2.5" SATA HDD and SSD
Type: Expansion unit for a Synology DiskStation
Management: Synology DSM
Warranty: 3-year limited hardware warranty, extendable to 5 years in select markets

Specifications

color: MulticolorSource
size: N/ASource

Questions and answers

Is the DX525 a standalone NAS?: No. It is an expansion unit that attaches to a compatible Synology DiskStation and adds five drive bays to that host.
Which drives fit?: It takes 3.5-inch or 2.5-inch SATA hard drives and SSDs in its five bays.
Can I expand storage without downtime?: Synology says new volumes can be added or existing volumes expanded through DSM without interrupting service.
How does it compare with buying a bigger NAS?: The DX525 keeps your existing setup and data in place and adds bays. A larger NAS replaces the host and brings its own processor and memory.
What is the warranty?: It carries a 3-year limited hardware warranty, extendable to 5 years in select markets.
Where is the Synology 5-Bay NAS DiskStation DX525 cheapest?: At Walmart, for $519.99, as of our latest check.