Lately I’ve been using rsync to keep two hard drives in sync. I’ve been thinking of switching to rsnapshot since it would give me with incremental backup which is much better. What I’ve yet to figure out is if it can handle resource forks (with Apple’s special flag in rsync), and HTS+’s. Google hasn’t returned much on the combination, so apparently there’s very little experience out there. As a result I guess I’m sticking with the more simple rsync until I see otherwise.