SURVEILLANCE 2TB 5400 RPM · CMR WD23PURZ
Western Digital · Surveillance drive · WD23PURZ
WD Purple 2TB This one's for camera recorders. WD sells it as a surveillance drive, and the ratings on its datasheet are written with CCTV in mind.
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That button opens an Amazon search for WD23PURZ, and searches throw up lookalikes, so the part number on the listing is the thing to check before you buy.
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Capacity 2 TB
Recording CMR
Speed 5,400 rpm
Warranty 3 years
Workload 180 TB/yr
Failure rate No failure data Sizes 1 TB 2 TB 3 TB 4 TB 6 TB 8 TB Good for A CCTV recorder (NVR or DVR) Not for A NAS (WD gives it no NAS rating) Heavy daily writes (180 TB a year rating) Updated 27 Oct 2026 · Method 2.0
Who the WD Purple 2 TB is for Got a CCTV box to fill? That's its home. 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.
! Watch out forNo NAS rating from WD. For an array, pick a NAS line instead.
No Backblaze failure rate for this one. They don't run enough of them, if any, for a figure worth quoting. WD's datasheet puts it at 21 dB idle and 26 dB seeking. Power draw is 3.2 W idle and 3.8 W working on WD's figures, or 28 kWh a year if it spends the whole year idling.
WD Purple 2TB specifications Drive type Surveillance source for Drive type (documents.westerndigital.com, opens in new tab) Capacity 2 TB source for Capacity (documents.westerndigital.com, opens in new tab) Spindle speed 5,400 rpm source for Spindle speed (westerndigital.com, opens in new tab) Speed class 5400 class source for Speed class (documents.westerndigital.com, opens in new tab) Recording technology CMR source for Recording technology (documents.westerndigital.com, opens in new tab) Cache 64 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 180 MB/s source for Max sustained transfer (documents.westerndigital.com, opens in new tab) Workload rating 180 TB/yr source for Workload rating (documents.westerndigital.com, opens in new tab) MTBF / MTTF 1,000,000 hours source for MTBF / MTTF (documents.westerndigital.com, opens in new tab) Warranty 3 years source for Warranty (documents.westerndigital.com, opens in new tab) Power at idle 3.2 W source for Power at idle (documents.westerndigital.com, opens in new tab) Power in use 3.8 W source for Power in use (documents.westerndigital.com, opens in new tab) Noise at idle 21 dB source for Noise at idle (documents.westerndigital.com, opens in new tab) Noise when seeking 26 dB source for Noise when seeking (documents.westerndigital.com, opens in new tab)
Sources: documents.westerndigital.com , westerndigital.com