In consideration of all the options for setting up a home NAS including consideration of power, it seems that using ZFS open solaris might be the best bet. I will start to research a solution to build and post the findings.
🙂
http://www.morph3ous.net/2009/08/30/setting-up-a-home-nas-using-opensolaris-and-zfs/
The Cohenization Project 