I use 2 ZFS mirrored 4TB drives mounted on a USB C dual bay device (iDsonix brand) for backing up my ZFS pools. I have a simple script that imports the backup pool and sends snapshots from my main ZFS pools to the backup pool.
My question: How do you safely store your physical backup drives/devices?
I have a fireproof box, but I don't think it was made for safely storing electronics in the event of a fire.