Well, I deviated slightly from my previous home server plans. I am using FreeNAS (based on FreeBSD) as the operating system which runs from a USB Flash Drive. The storage drives are arranged using the ZFS file system which has very high performance and redundancy. The software includes Samba support which allowed me to configure it to use Active Directory integration for access control. All in all I am very impressed with the performance of this free open-source software. It does take some technical know-how to configure correctly for optimum performance but I wouldn’t have it any other way