I have it installed on my immediate family's devices to ensure all the photos are auto-backed-up to our NAS (which is then backed up to another NAS).
I need to check to make sure it's still working once in a while (every couple of months), but it's usually fine, and even if it's somehow stopped working, getting it running again catches itself up to where it should have been anyway.
+1 for SyncThing
I have it installed on my immediate family's devices to ensure all the photos are auto-backed-up to our NAS (which is then backed up to another NAS).
I need to check to make sure it's still working once in a while (every couple of months), but it's usually fine, and even if it's somehow stopped working, getting it running again catches itself up to where it should have been anyway.