My current plan once new migration is completed:

Primary pool - 1x ZFS (couldn’t afford redundancy but no different to my RPI server). My goal is to get a few more drives and set up a RAIDZ1/2.

Weekly backup of critical data (eg. nextcloud) from primary pool to a secondary pool. Goal here is to get a mirror but will only be one drive for now.

Weekly upload of secondary pool to hetzner storage box via rsync.

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Current server

1x backup to secondary drive (rpi) 1x backup to hetzner storage box via rsync