yes you can. if your board supports it with 3 drives you could also make a raid 5 array which combines the best from raid 1 and raid 0. most boards do not support raid 5 unfortunately. I have 2 drives in a raid0 for my os and games and have 2 other dirves non raid for data and it works great.
ASUS P6T Deluxe V2 :: INTEL i7 920 @3.4 :: XFX GTX260 :: 6gb Corsair 1600 :: Corsair 750TX :: TRUE 120 :: Samsung T240 24" :: Windows 7 X64
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