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RAID is not a backup: the 3-2-1 rule, honestly (chartmann1590.github.io)
submitted 2 weeks ago by 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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[–] 3 points 2 weeks ago* (last edited 2 weeks ago) (1 child)

Put the two 8tb in a mirrored raid so if one fails you keep your data. Use the 14tb as a backup that is left unplugged for longevity.

That would be my recommendation which is similar to what I have (4 x 6 tb for twelve gigs of redundant storage) and a couple of 8tb drives I keep for occasional (monthly or so) archival backup.

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