Can time machine be duplicated? Here's the situation. I've got a MP with now with 4x500GB HDs. I'm using one of the internal HDs as a time machine drive to back up my boot drive. That leaves the other 2 drives that have some important stuff on them unbacked up. So, is it possible to create a second (or third, etc.) instance of TM and direct it to back up the other drives in a same fashion as my boot drive? Since all my internal drive bays are now filled, this assumes the new TM drives would be externals (either Firewire or eSATA).