one more thing.

fw800 as an interface - never works faster than the exact same internal sata drive could work.

whatever the raid config - its never going to be faster than a single internal sata drive.

the bandwidth of fw800 is not really enough to do anything with a raid configuration - unless you have really poorly performing drives.
thats why most people in this area have put sata connectors on their drive cases.

current headline data transfer rates can be found at:

http://www.storagereview.com/php/ben...bench_sort.php