Ok, here is what I want to achieve: I have my MBP with a 500GB hard drive that I want backed up to an external 750GB drive (A). Then I have an external 1TB drive (B) that I also wanted backed up to an external 1TB drive (C). Or: internal -> drive A drive B -> drive C Can Time Machine do this all for me or am I going to need a 3rd-party app to help. I know I can easily use TM for doing one of the backups, but will it handle both? If not, what's a good 3rd-party app that will help me accomplish this? Thanks!