I would like a fast boot drive and since I was already getting the RAID card option, is there any reason not to get a SAS drive for a boot drive for speed? 1) are they very noisy? 2) i know they are more expensive I was thinking of: 1) SAS drive for the boot drive 2) 3 samsung f1's 1tb each in a RAID 5 config for file storage for total of 2tb of storage. Probably use external drive for time machine and use parallels or VMWare for windows xp if I need to. Thoughts?