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?
If you’re storing, then offline, read only, checksummed and preferably encrypted. And above all, several tested backups. I’m partial to making erofs images from dirs, but any archive that fits the content type works.
For the random access cache on top, whatever.