I run ZFS on my systems including with Ubuntu (the support has recently come out of experimental, in Ubuntu 22.04, and it’s pretty good with Zsys). It’s a super

I run ZFS on my systems including with Ubuntu (the support has recently come out of experimental, in Ubuntu 22.04, and it’s pretty good with Zsys). It’s a superb file system, but to use ZFS send, you need: a RAID server (ideally with ECC RAM), and another mirror in a different place for replication. So, two TrueNAS servers, for instance. It costs in hardware and electricity, and sysadmin maintenance time. Restic and Borg are portable. You can send to, and recover from, any cloud provider for cheap. There is rsync.net for ZFS, it requires minimum 1TB and it’s still more expensive than alternatives (because they have to assign to you RAM and some CPU too). If you have a ZFS backup system, use that. Ordinary people might be better off with a tool that works with any cloud storage.