>>7
>>10
OP, don't use RAID0. RAID0 is disk striping. There is no safety net. All it will do is double the chances of your drives going down, since you are now relying on two drives rather than one. When you lose one of the drives, you will lose nearly all of your data.
If you want to be able to survive one hard drive failure, then go for RAID5 (Parity). If you want to withstand two or more in-use hard drives failing, go with RAID1(Mirroring) or any other RAID setup with RAID1 included.