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Western Digital · Surveillance drive · WD241PURP

WD Purple Pro 24TB

A surveillance drive, made for CCTV recorders that write video all day, and WD gives it no NAS bay rating.

Capacity
24 TB
Recording
CMR
Speed
7,200 rpm
Warranty
5 years
Workload
550 TB/yr
Failure rate
No failure data

Good for

  • A CCTV recorder (NVR or DVR)
  • 5 years' warranty

Not for

  • A NAS (WD gives it no NAS rating)
  • A desk or bedroom (7,200 rpm is the louder class)

Updated 27 Oct 2026 · Method 2.0

Who the WD Purple Pro 24 TB is for

If you're filling a camera recorder, this is what it's made for. It turns up when you sort everything by price per TB, which is why it's labelled here. In a NAS you'd be running it outside what WD rates it for, and for an array you want a drive that's rated for one. WD backs it for five years, which is a long time in drive terms.

Watch out for

WD doesn't rate it for NAS use at all, which rules it out for an array as far as we're concerned. At 7,200 rpm it's from the louder, warmer class. Fine in a cupboard, less fun on a desk.

Backblaze doesn't run enough of these for a failure rate we'd publish. WD's datasheet puts it at 25 dB idle and 32 dB seeking. Power draw is 5.7 W idle and 6.2 W working on WD's figures, or 50 kWh a year if it spends the whole year idling.

Specifications

Each value links to the Western Digital page or datasheet it came from.

WD Purple Pro 24TB specifications
Drive type Surveillance source for Drive type (westerndigital.com, opens in new tab)
Capacity 24 TB source for Capacity (documents.westerndigital.com, opens in new tab)
Spindle speed 7,200 rpm source for Spindle speed (documents.westerndigital.com, opens in new tab)
Recording technology CMR source for Recording technology (documents.westerndigital.com, opens in new tab)
Cache 512 MB source for Cache (documents.westerndigital.com, opens in new tab)
Interface SATA 6Gb/s source for Interface (documents.westerndigital.com, opens in new tab)
Form factor 3.5in source for Form factor (documents.westerndigital.com, opens in new tab)
Max sustained transfer 287 MB/s source for Max sustained transfer (documents.westerndigital.com, opens in new tab)
Workload rating 550 TB/yr source for Workload rating (documents.westerndigital.com, opens in new tab)
MTBF / MTTF 2,500,000 hours source for MTBF / MTTF (documents.westerndigital.com, opens in new tab)
Warranty 5 years source for Warranty (documents.westerndigital.com, opens in new tab)
Power at idle 5.7 W source for Power at idle (documents.westerndigital.com, opens in new tab)
Power in use 6.2 W source for Power in use (documents.westerndigital.com, opens in new tab)
Noise at idle 25 dB source for Noise at idle (documents.westerndigital.com, opens in new tab)
Noise when seeking 32 dB source for Noise when seeking (documents.westerndigital.com, opens in new tab)

Sources: documents.westerndigital.com, westerndigital.com