I just set up a WHS and have most of my data moved over to it but it would not be that hard to do again. I used a 640 GB drive for the boot drive and several 1 TB drives for the data pool. After I was finished I read that it is best to use your largest drive for the boot drive because moving it over to a larger drive is a real pain. I normally wouldn't bother buy I just got a few 1.5 TB drives and it would be best to replace the 640 GB. So I guess what I'm asking is, would it be easier to start from scratch or would it still be easier to replace the boot drive and leave the data pool alone?