In the NAS performance read tests the RAID 0 array was the fastest when handling the 1GB file test while the RAID 10 array was the fastest dealing with the 2GB and 4GB file tests.
In the write tests, there wasn't much to choose between RAIDs 6, 5 and 10 when dealing with the 1GB file. The best performance when handling the 2GB and 4GB file tests came with the drives in a RAID 10 array.