btrbk

For small scale, use Dropbox or Google Drive, or whatever, because for small scale the most important part of backup is actually reliably having it done. If you rely on manual process, you're doomed. :) For large scale in house things: Ceph regurarly does scrubbing of the data. (Compares checksums.) and DreamHost has DreamObjects. Thanks for mentioning borg/restic, I have never heard of them. (rsnapshot [rsync] works well, but it's not so shiny) Deduplication sounds nice. (rsnapshot uses hardlinks.) That made me look for something btrfs based, and here's this https://github.com/digint/btrbk seems useful (send btrfs snapshots to a remote somewhere, also can be encrypted), could be useful for small setups.