I just ran a pair here for quick array in order to check out how the board was doing as well as seeing how 7 would do in that configuration being the mirrored type setup. The pair are on the 3+4 ports where the other three had to be unplugged to see the first of the pair become the new host boot drive for the array.
Enabled the array option in the bios and then enabled each one individually in the bios sub section there to make that work. Later came the fun when both drives saw a need to be plugged in separately from the rest! Otherwise the host still saw the second of the pair as part of the array and invisible when in the separate install there.
How to restore each? Nuke the host while all others were unplugged, replug the second of the pair back in already having a clean install of the 32bit RC on, install the 64bit on the former array host, and then replug the remaining. The previous boot entries on the first host drive simply took over for the 3 way boot! and now the second 64bit was able to initialize and mount online the second drive making the 32bit visible in any explorer window.
In order words how to break up an array and make each individual drives again to select from the first drive's boot menu!
Talk about pains in daaaa.... unplugging, replugging, unplugging again...