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RAID is not a backup: the 3-2-1 rule, honestly (chartmann1590.github.io)
submitted 2 days 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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[–] 5 points 2 days ago (2 children)

You also don’t have to back up everything. I back up my configuration and documents only.

Yeah I mean I have to go this way. My home server is 38 tb and I'm about 60% on that. Alot of it is archival stuff I know better data hoarders than I are keeping on their stacks.

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  • [–] 1 point 2 days ago (1 child)

    That is a lot of data, I’m jealous. I want that much storage space.

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  • [–] 2 points 2 days ago

    Yeah I guess it can appear that way.

    Lets just put it this way though, for one work project, I expect to have to work through ~250 tb of data. We won't keep it all on disk at once, but over the course of the next year, that was what we spitballed needs to get processed. The system once finished will have to throughput almost a TB a week (which imo, is nothing).

    THen in terms of my own storage and what that is. Its some full disk image backups of old machines where I'm lazy and haven't bothered to clean/ winnow it down to what I really need. Then its two google drive backups of a bout a tb a piece. Then I've got a reddit archive of all posts and commens. Thats a couple ter.

    Then I have all of the epstien files backed up. The original releases as they came down. Including the redaction mistakes they made. Thats a bunch.

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