Surveillance drives

Western Digital WD Purple 2 TB (WD23PURZ)

The entry capacity of the WD Purple range, and the one where the footnotes matter: Western Digital states up to eight bays and reserves its anti-vibration components for 3 TB and above.

Western Digital WD Purple 2 TB surveillance hard drive

Western Digital WD Purple 2 TB (WD23PURZ)

The entry capacity of the WD Purple range, and the one where the footnotes matter: Western Digital states up to eight bays and reserves its anti-vibration components for 3 TB and above.

Capacity: 2 TB
Workload rating: Up to 180 TB/year, stated by Western Digital
Firmware: AllFrame, for write-heavy low-bitrate streams
Bays supported: Up to 8 at 1–2 TB, per the manufacturer
Anti-vibration components: Stated for 3 TB and above only
Form factor: 3.5-inch SATA
Amazon reference: B0C4WX4YPD
EAN: 0718037896199

Workload rating published: up to 180 TB per year, stated by Western Digital
AllFrame firmware, described by the maker as tuned for write-heavy, low-bitrate, high-stream-count work
2 TB is weeks rather than months on several 4K cameras recording continuously

Best for: A one to four camera recorder where event recording keeps months of history and 2 TB is genuinely enough.

≈ $184

Check price on Amazon

Specifications

Capacity: 2 TB
Workload rating: Up to 180 TB/year, stated by Western Digital
Firmware: AllFrame, for write-heavy low-bitrate streams
Bays supported: Up to 8 at 1–2 TB, per the manufacturer
Anti-vibration components: Stated for 3 TB and above only
Form factor: 3.5-inch SATA
Amazon reference: B0C4WX4YPD
EAN: 0718037896199

This is the entry point of the WD Purple range, and it is also where reading the footnotes changes what you are buying.

What the range is for

A recorder writes continuously. Western Digital states a workload rating of up to 180 TB a year for this drive and describes its AllFrame firmware as optimized for write-heavy, low-bitrate, high-stream-count work — which is the shape of surveillance traffic and the opposite of what a computer does.

That is the whole argument. Not speed: longevity under a workload desktop drives handle worst.

The footnote that matters at this capacity

Western Digital publishes two limits that apply to 1 and 2 TB drives specifically. Up to eight bays rather than sixteen. And the anti-vibration components — the parts that cope with several drives spinning in one enclosure — are stated for 3 TB and above.

In a single-drive domestic recorder neither limit changes anything. In a multi-bay enclosure both do, and no summary of this listing would tell you.

Sizing it honestly

Ask the recorder. It knows your cameras, your resolution and your mode, and its estimate beats any figure written here. Then buy one size up, because the cost of discovering the retention was too short arrives after the event you needed.

Availability

On sale at $180 on the American Amazon store at the time of checking.

Prices and availability are what Keepa reported on the date this page was updated; both move.

Prices quoted in this text were read on September 2, 2026. The live price is at the top of the page.

The questions we are asked

Is 2 TB enough?

It depends on the cameras, the resolution, the frame rate, the compression and how much movement they see — and your recorder estimates it far better than any rule of thumb. The shape: four 4K cameras recording continuously measure retention in weeks on 2 TB; the same cameras on event recording measure it in months.

What does the workload rating actually mean?

How much data the maker expects to be written to and read from the drive in a year. Desktop drives are typically rated for a fraction of 180 TB and spend most of their life idle; a recorder writes every second of every day. It is the specification that decides how long the drive lasts, and it is why a desktop drive in a recorder fails early.