JaredDM: Western Digital (WD) tech support told me the timing circuits within the Velocity HD's are not suited for RAID because one will drop out and require rebuilding the array due to one being out of time with the other. That is the explaination they provided. They said only their RED Label WD HDD's are RAID Certified and only they are accurate timing circuit wise to work in harmony together for RAID.
To answer another members question, the RAID is supported by the AMD 990FX Chipset on the Gigabyte Motherboard. I would have quite a time finding another one of these boards since everyone is out of stock of this motherboard. Since there is problems should a motherboard fail because the Chipset is tied to the RAID functionality, they you are saying if I ever do consider RAID, I should use one of those RAID Controller Boards that insert into one of the slots on the motherboard, just in case I should suffer a MB failure. I take it your implying, should I suffer a MB failure and I have an external RAID Card that can be removed from the MB and inserted into a different MB with a different chipset, then I would not lose my RAID Array and the information on the HDD's, and I would be able to use the RAID Controller Card and the RAID Configured HDD's in a new MB?