FreeBSD is giving me a sultry look as I ponder my NAS build.
replies(5):
The comapny behind it, iXsystems, pays for ZFS developers as well.
Being able to do snapshots easily is really nice. I have a script that makes hourly snapshots and keeps the N latest, which protects me against a bunch of pebkac errors
I do periodic backups to non-btrfs storage though. I need backups anyway so it seemed like an easy way to de-risk