So, I installed RedHat 7.2 on this machine.
During the install, did it only show you 1 disk? Was that /dev/sda?
Now, when the machine is configured and going into production, turns out that these HDDs are not in mirror! As far as I've studied this case there are HPT drivers for RH7.2, but only on customized boot disk.
Did you use that customized boot disk?
-- Rodolfo J. Paiz rpaiz@xxxxxxxxxxxx