Check if the RAID board has Linux drivers available. If yes, and Knoppix 5.1.1 does not recognize it, then wait for Knoppix 5.2.1 and see if that works.
Knoppix 5.1.1 (the most recent official release) was the first version that was able to detect my RAID controller. Before that I got nothing, and there was nothing that I could do about it.