I'm running two Hitachi 80Gig drives in a raid 0 array. I have an add-on defrag program from executive software that I planned on using about every month or so depending on how much junk I loaded and unloaded from my drives. Now I find that my raid array drive "c" is severely fragmented every few days. I'm Running the generic Intel raid driver that came with the Intel motherboard (kept updated). is raid striping inherently fragmenting of the data by dividing it up between two drives?