I have it add a backup suffix based on the date. It moves changed and deleted files to another directory adding the date to the filename.
It can also do hard-link copied so that you can have multiple full directory trees to avoid all that duplication.
No file deltas or compression, but it does mean that you can access the backups directly.
koala@programming.dev 5 hours ago
Thanks! I was not aware of these options, along with what other poster mentioned about
–link-dest. These do turn rsync into a backup program, which is something the root article should explain!(Both are limited in some aspects to other backup software, but they might still be a simpler but effective solution. And sometimes simple is best!)