I was planning on buying 2 more 1TB drives to make a 4 TB RAID 0 array. I was wondering for one would this be a smart idea i know with RAID 0 if 1 drive fails you lose everything but i've always used RAID 0 and none of them have ever failed. Plus if i can manage it i was planning on getting a NAS with 2 2TB drives in it to back up the PC. Second question will windows see a 4TB RAID 0 i've read a few posts on the internet about peoples computers haveing trouble seeing anything over 3TB. The OS is on a seperate drive so if the RAID did fail i would still be able to boot up the PC to maybe recover the data. I was also considering maybe putting it in a RAID 5 but from what i hear it isn't as good performance wise as RAID 0.