I am brand new and I just done a search "is ATI 11 compatible with RAID". Maybe I worded it wrong, but the posts that I did find and then read, really didn't give me a clear yes or no. I setup my PC in 2005 w/ windows xp pro, and I set the HDD's (2-seagate 200gb each) to RAID 0 array, in order for both HDD to show as 1 400GB w/ partitions C:,E:, F:, G:, & H:. I purchased ATI 11 a couple of weeks ago, it's still sealed I haven't got around to installing it yet. But after reading posts in this forum, I'm not sure that this will work for me. Does anyone have any anwsers in laymen terms? Thanks in advance, this is really a great forum.