I'm about to setup my mac pro with two internal drives as Raid 0. I would be purchasing 2x Hitachi 3TB 7K3000. Seem to be a good choice for speed. Setup would be Bay 1 - Boot Bay 2 - Raid 0 Bay 3 - Raid 0 Bay 4 - Time Machine ( to back up the other 3 drives ) Does any one have any experience over these two software options? Reliability etc. As far as i can tell it makes a bigger difference for other types of raid but not raid 0. At a later stage I might buy a SSD to boot and an additional drive for Raid 0. Any comments would be much appreciated.