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125

What do people use for a shelf-stable backup (lemmy.nz)

submitted 1 year ago by Dave@lemmy.nz to c/selfhosted@lemmy.world

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I have backups on a backup hard drive and also synced to B2, but I am thinking about backing up to some format to put in the cupboard.

The issue I see is that if I don't have a catastrophic failure and instead just accidentally delete some files one day while organising and don't realise, at some point the oldest backup state is removed and the files are gone.

The other thing is if I get hit by a bus and no one can work out how to decrypt a backup or whatever.

So I'm thinking of a plain old unencrypted copy of photos etc that anyone could find and use. Bonus points if I can just do a new CD or whatever each year with additions.

I have about 700GB of photos and videos which is the main content I'm concerned about. Do people use DVDs for this or is there something bigger? I am adding 60GB or more each year, would be nice to do one annual addition or something like that.

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[–] just_another_person@lemmy.world 5 points 1 year ago* (last edited 1 year ago) (1 children)

In your scenario, I'd be looking at ZFS or BTRFS for your live data, especially when taking photos into account. They'll self-repair files that may run into decay issues, which I've seen a lot of with photos in all formats. Since you already keep off-site backups, I'd then just keep an extra drive around that you snapshot to from time to time.

[–] Dave@lemmy.nz 2 points 1 year ago (1 children)

So my offsites are an incremental backup, but at some point the oldest version is gone. I am keen for a completely separate, long term snapshot of what I had that could be thrown in a cupboard, and any random family member clearing my house out as I get moved into a rest home at 108 can go through the photos and find a good one to put on my headstone.

I am also keen for protection against doing something dumb and losing everything (like losing my hard drive and finding out for some reason I can't access my backups because I lost the encryption key because I put it in bitwarden and they shut down years ago and I never moved the key over because I forgot it was stored there).

[–] just_another_person@lemmy.world 3 points 1 year ago (1 children)

ZFS and BTRFS both provide that functionality. Have a look into the features.

[–] Dave@lemmy.nz 1 points 1 year ago (1 children)

So the drive doesn't need to be hot, I can just plug in once a year and it auto-repairs?

[–] just_another_person@lemmy.world 2 points 1 year ago (1 children)

No, the "live" filesystems will repair themselves when they detect problems. They keep revisions of your data, and run checksums constantly. When they find a file has inadvertently changed without access, it will restore said files. Think of it like Mac "Time Machine", but it's just the filesystem . You can restore stuff from points in time when needed.

Just read up on it.

[–] Dave@lemmy.nz 1 points 1 year ago

Yeah I will read up on it, thanks for the tip!