I’m trying to find a good method of making periodic, incremental backups. I assume that the most minimal approach would be to have a Cronjob run rsync periodically, but I’m curious what other solutions may exist.
I’m interested in both command-line, and GUI solutions.
Just keep in mind that a replica is not a backup.
If you lose or corrupt a file and you don’t find out for a few months, it’s gone on the replicas too.
Correct! I have Sanoid take daily and monthly snapshots on the source server, which replicate to the destination. Every now and then, I run a diff between the last known-good monthly snapshot and the most recent one which has been replicated to the destination. If I am happy with what files have changed, I delete the previous known-good snapshot and the one I diff’d becomes the new known-good. That helps keep me safe from ransomware on the source. The destination pulls from the source to prevent the source from tampering with the backup. Also helps when you’re running low on storage.