The seek speed of the drive is probably more important than the controller
it's hooked to. Right now, though, the killer is the dos o/s. I suspect
that using my own code to bypass dos would probablly run 10X faster and my
code is not at all optimized for speed. The dos spends far too much time
updating pointers. That's why for small partitions diskperf will write
nearly as fast as it can read.