Alright, so Time Machine is awesome. however if something were to happen at my office and my computer and backup drive went down, I'd be in loads of trouble. So, what I'd like to do is have a drive that I take with me between the office and home. I plug it in while at the office and then take it home. This drive will periodically backup the latest Time Machine backup. That way if something were to happen at the office one night, I'd still have the latest versions of all my files. Anyone know a good way to do this? Or to have Time Machine backup to two drives? Or some other solution? Thanks!