Alright i am new to these forums and also this is the 1st computer i have put together myself. Because im a gamer i thought it would be a good idea to try raid 0 with 2 hard drives for extra performance. The problem i'm experiencing is that my raid 0 setup is causing files to take up twice as much space on the hard drive as they should be. Like if i select all the files (including any hidden ones) in my c:\ it says 50GB of files. If i go into my hard drive properties it says i have used up 100GB, which has continued as more files are added. it just keeps doubling and it seems to be an exact double. I was not aware this was going to happen, is it normal? no-one else i have spoken to knows what is going on. I am running windows vista 64bit and the hard drives are both 320GB Hitachi T7K500 sata 2 16mb cache. I have an asus p5k premium and e8400 processor with xfx 8800gt oc gpu. Also i am using the Intel matrix technology to control the raid setup, which does confirm in windows when i run the matrix storage console that its in raid 0 not raid 1 so that isn't the problem. Any help would be appreciated in terms of fixing or explaning this, and i am seriously thinking of formatting it and starting again with no raid, it is possible to go back isnt it?