this post was submitted on 22 Oct 2026
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RAID is not a backup: the 3-2-1 rule, honestly (chartmann1590.github.io)
submitted 1 day ago by homelabtherightway@lemmy.world to c/homelab@lemmy.ml
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What actually counts as a copy under the 3-2-1 rule, why a RAID mirror or a snapshot only protects against one kind of failure, and the one-page inventory that exposes the gaps.

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Disclosure: this is my own article (Charles Hartmann, Homelab the Right Way). Written with AI help and edited by me; the setup described is mine.

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[–] non_burglar@lemmy.world 1 points 1 day ago

You can often find storage in old computers at 2nd hand shops for cheap, and backups don't usually need to be fast, so performance isn't super critical.