Thanks for the reply Paul. The array is built through the Highpoint RocketRaid 454 controller using the tools built into the controller. Checking Task Manager now shows a CPU usage of between 0 and 1 percent. I just checked the Management Console for the controller and under Array Management the Raid5 Array is show as complete and available. This raid controller has no memory on it that I can see. I think it must just use system resources for most of its functions.??