I am not sure whether I should go with an 2TB external or an inexpensive RAID setup (around $400 to $500 with drives). My iMac has a 1TB internal. Someone recommended 2 x 2TB externals FW800, one for Time Machine and the other for cloning the boot drive. The problem is I would like to store and access most of my files (InDesign, Photoshop, iTunes/iPhoto libraries) primarily off the external and not the internal. How would I achieve redundancy with out a RAID in this case? Can Time Machine clone information from one external to another external? And if I go the RAID route, I read that if the controller is bad, portions of data can be corrupted or the drives are unreadable or dead. That's a scary realization. I am not sure which way to go. Any advice or product suggestions would be appreciated. Thanks.