From all the posts I have read on hard drives and performance, it seems that I should have at least four 2.5", 40GB drives@15,000R.P.M. RAID 10, formatted into small partitions, the 2.5" drive makes a smaller physical travel of the heads, increasing speed, the striping to speed up access to the data and mirroring to cover me if I have errors. Smaller partitions make the heads travel shorter distances, and the formatting starts on the outer edge of the disk, where the speed is greatest, so the data can be retrieved and stored fastest there. OR am I all wrong and read all the info wrong? Help me please, I wish I had read all the information before I spec'd this computer, oh well c'est la vie.I can always trade one of my friends for a couple of my old drives, and maybe get some cash to buy little fast ones if that is what I need to do. Any Ideas??