I searched and I looked at the FAQ (and also the docs.syncthing.net location) but I still haven’t quite found an answer to this.
Is Syncthing capable of doing incremental syncs? I know there’s a difference between syncs and backups, but what I’m hoping to find is something like Timeshift, where you have a structured programme of snapshots, but which is cleverer than Timeshift.
I believe Timeshift uses rsync, and does not have the ability to respond to file system events (creation, deletion or modification of files), which seems like a great strength of Syncthing. As far as I can work out, you also can’t use Timeshift to sync arbitrary locations, or apply filters, for example: it’s either “my system” or “my system plus my home directory”.
The obvious value of such a programmed snapshot arrangement is that in the event of something untoward or catastrophic happening (massive inadvertent deletion of files, ransomware), you can then track back in time to a snapshot before all that happened, (and perhaps even salvage selected files from more recent snapshots).