Glad to hear you learned the lesson the easy way about stripe sets. With RAID 0 you have greater speed but if either of the drives fails you lose ALL your data. And you can only access it through a RAID controller of the same type. RAID 1 (mirroring) is what you want for data security, but it comes at a price since you need 2 drives to do the job of 1 and you lose some write speed, depending on your controller.
-- Brian
