User foxrevolution gives us a run down on what your typical NAS set up might look like, one that is running FreeBSD or FreeNAS.
After that I started researching my options to build the server. The two most important elements of a storage server are the OS and the RAID setup. Well the RAID is the most important but the OS plays a role in how the RAID is setup. I choose FreeBSD because it has native support for the ZFS file system. The documentation looked simple enough and it allowed the OS to be installed on a RAID array. Before going farther I should briefly go over what RAID is. Wikipedia defines RAID as: