rocket raid with opteron board on 5.1 problems

[jeff hinkle]

any one know any thing special that needs to be done to get a rocket raid 1640 to see 3 80 gig SATA drives as one under 5.1 when installing on dual opteron system?

the system sees it fine and the board management interface looks good - however when installing 5.1 to the system - it shows the 3 drives as seperate and asks where you want to install the boot partician to.  any htuoghts please?