Mac Pro Internal Hard Drive Raid and Size

I have out grown hard drive storage space on my Mac Pro. Currently, I have a 300 Gig system drive and 500Gig Scratch Drive. I am considering purchasing two 1000Gig drives because I could use a very large volume of video storage.
I would think that an internal SATA drive has a better read when compared to a FireWire/USB 2.0 Drive
In addition I want to RAID the two 1000Gig drives to increase my read/write speed and provide some measure of redundancy.
Any Suggestions as to type of RAID, how to format and create the RAID.
Also any suggestions as to brand of drive to purchase.

http://www.kenstone.net/discussions/read.php?3,1675,1675#msg-1675
-DH

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