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Raidz2 or btrfs for important document storage? (piefed.blahaj.zone)

submitted 1 month ago* (last edited 1 month ago) by CorrectAlias@piefed.blahaj.zone to c/selfhosted@lemmy.world

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I currently have a secondary pool (with raidz2) that I was originally going to use for my important documents, such as storage for Paperless-ngx, as raidz offers corruption detection and repair. The pool is encrypted.

However, I'm concerned about rebuild times (it's a pool of 4 22TB drives). Is btrfs a better choice for this use case, or should I just go with raidz like I originally planned?

Edit: I should have mentioned that I already have 4-3-2 backups configured - I'm primarily interested in the "self-healing" aspect of ZFS so that I don't have to recover from backups unless necessary, and to resolve corruption on the fly without me having to notice that a file is corrupt.

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[–] exu@feditown.com 3 points 1 month ago (2 children)

Maybe you could switch to a raid10 (mirrored striped vdevs) for faster rebuild time.

BTRFS is relatively similar to ZFS when it comes to their raid implementation, though using raid5 or raid6 comes with some caveats.

[–] felbane@lemmy.world 7 points 1 month ago* (last edited 1 month ago)

I would absolutely not trust BTRFS's implementation. Maybe things are better now but it earned the backronym Bro The RAID Fuckin Sucks for a reason.

[–] CorrectAlias@piefed.blahaj.zone 1 points 1 month ago (1 children)

Raid 10 is and interesting idea for sure. It would certainly help with write speeds, although if I want to utilize the "self-healing" of ZFS, I'd need to do two (separately striped) vdevs that mirror each other to get the equivalent to RAID10, right?

[–] exu@feditown.com 2 points 1 month ago

You'd create two mirror vdevs in the same zpool to get the raid 10 equivalent