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A comment on The 3-2-1 Backup Rule – Why Your Data Will Always Survive (2019). Parent comment

Re:The 3-2-1 Backup Rule – Why Your Data Will Always Survive... by gruez on Wednesday November 24, 2021 @06:48PM (#29336619)
>The different media types is probably the hardest issue

That's probably overrated and you shouldn't feel bad about not implementing it. The justification for it is:

>you may lose them due to the same hardware issues

buying different hard drive models/manufacturers/batches achieves the same thing without the risk of having data stored on dinosaur media.

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Re:The 3-2-1 Backup Rule – Why Your Data Will Always Survive... by bigiain on Wednesday November 24, 2021 @09:27PM (#29337637)
I agree with that with one important caveat.

I wouldn't trust multi terabyte drives in raid 5 sets to not suffer cascading failures during a rebuild after a single drive failure/replacement.

I'd consider two file servers or NAS boxes with the same type/brand/model of drives in raid 5, to be "the same media type" in the context of that advice.

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