CCTV HDDs

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mdf

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#243093 26-Nov-2018 16:26

I need an HDD for a CCTV NVR.

I've seen "surveillance" specification HDDs that are "optimised for CCTV" - e.g. WD's "Purple" range.

Is this a genuine thing, or a bit like Neurofen "targeted" pain advertising?

chevrolux

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#2134708 26-Nov-2018 16:41

We buy the WD Purple's for NVR's and haven't had an issue with any failed ones yet.

We used to use WD Red as they seem to just last forever, WD Purple is slightly cheaper and seems to last as well - no idea on the marketing of it all.

But I wouldn't go anywhere near the WD Green or Seagate Barracuda drives personally - seen them fail too much in just normal PC's.

kingdragonfly

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#2134729 26-Nov-2018 17:09

I believe the difference between video surveillance hard disk drives and non-rated drive came down to whether a hard drive could stop briefly periodically.

I believe the reason a hard drive would "stop and take a breath" was thermal recalibration during non-stop recording.

With built-in caches on all modern drives, I'm not sure if this is a big a deal as the older ones.

If you go with a non-video rated HDD, you may lose a few frames periodically.

sbiddle

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#2134858 26-Nov-2018 19:04

I only ever use Seagate Skyhawk or WD Purple drives. Some of the marketing features are just that, but considering they're incredibly cost effective I'm not sure why you'd use anything else.