If you want the total space for storage, then just do separate drives. THat way if you lose one drive, you only lose half your data. If you lose one drive in RAID 0 (which isn't RAID, I hate the term RAID 0), all your data is POOF! gone! IF you are looking for performance, then you should be using faster, smaller drives in RAID 0 (like video editing, etc), say 4 500GB drives or something. Or go RAID 10, (mirrored and striped), although your MB would have to support that.