Got a CCTV box to fill? That's its home. We list it because surveillance drives show up in any price-per-TB hunt. For a NAS array, though, you'd be running it off its rating. You also get five years' warranty, two more than the cheapest NAS lines.
!Watch out for
It isn't a NAS drive, and WD gives it no NAS bay rating. Building an array? Get a NAS or data-centre line, which comes with the rating. It's a 7,200 rpm drive and you'll hear it working.
No Backblaze failure rate for this one. They don't run enough of them, if any, for a figure worth quoting. On paper it makes 34 dB at idle and 39 dB seeking. WD lists 8.2 W at idle and 9.1 W working, which comes to 72 kWh a year for a drive that idles around the clock.
Specifications
Each value links to the Western Digital page or datasheet it came from.