Okay, so there's my problem. I have one main desktop at home with 2x250 RAID 0. I recently discovered that this is what I think is fakeraid (i had to install RAID drivers before I installed windows to put my OS on the RAID 0 setup). Now I have a partition on the RAID 0 setup thats for all my data, which is obviously backed up (actually twice). The problem is that syncing files across three different backups is a pain in the ass. I haev an extra internal that I use for one backup, but SMART tells me its not going to last long (it has been saying that for a year though lol). And I have another copy of the data on my external which I take to school with me, which I need. So every once in a while I need to sync my external becuase I take it to college with my data at home on the RAID array. I'm thinking instead of backing it up onto the extra intenral HDD, I make a RAID 5 array and have just one copy of all my data on my desktop at home, and then the external will have another copy of it at school. and when I come home I can sync the two as needed, right? Someone else linked to this recently: http://www.nvidia.com/object/feature_raid.html which is the feature I think my mobo supports. I really hope that wasn't confusing. So I'm thinking the best way to keep my data secure at home would be just pop in another 250 and convert to RAID 5, which it would do automatically correct? And then get rid of my extra internal that might die, and then keep a Synced copy on my external?