this post was submitted on 25 May 2026
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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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[–] MangoPenguin@piefed.social 3 points 5 days ago (1 children)

What about 2 mirrored pools of 2 drives each, then back up the main pool to the other with either ZFS snapshots or a tool like Restic.

Ideally you also need an offsite backup of important files too, but that gets you part way to a robust system that can handle corruption or accidental deletions.

[–] CorrectAlias@piefed.blahaj.zone 1 points 5 days ago* (last edited 5 days ago)

Would this just be to help with the rebuild time? Raid10 in ZFS is an interesting idea, which would also require two mirrors and striping.