You definitely should have checksumming in some form, even if compression and deduplication are worthless in this particular use case, so either use ZFS on both

You definitely should have checksumming in some form, even if compression and deduplication are worthless in this particular use case, so either use ZFS on both the sending and the receiving side (most efficient, but probably will force you to redo the NAS), or stick to restic. I've been mostly using restic over the past five years to backup two dozen servers + several desktops (one of them Windows), no problems so far, and it's been very stable in both senses of the word (absence of bugs & unchanging API — both "technical" and "user-facing"). https://github.com/restic/restic https://github.com/restic/restic The important thing is to run periodic scrubs with full data read to check that your data can actually be restored (I do it once a week; once a month is probably the upper limit). restic check --read-data ... Some suggestions for the receiver unless you want to go for your own hardware: https://www.rsync.net/signup/order.html?code=experts https://www.rsync.net/signup/order.html?code=experts https://www.borgbase.com https://www.borgbase.com (the code is NOT a referral, it's their own internal thingy that cuts the price in half)