What is the optimal raid config. with four 300GB SAS drives? - Speed being the over-riding factor here. Also, how to organise the op syst/apps/files - again speed being the essence. I'm thinking: bays 1/2 holds apps in Raid 0, bays 3/4 for files Raid 0. IS this OK? But my concern is running out of space too quickly; would it take too long to transfer files via Time Cap in an effort to keep hard drive space on the MP? Any thoughts appreciated.