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?
I’d stay on zfs, I simply don’t trust btrfs’ raid implementation. For very important documents I also set copies=2 (or 3) on that dataset, just in case.
And as others already said: 3-2-1 backups ;)