If planning to install a standard linix distro onto a box with HardwareRaid, it's a good idea to make sure it is a SupportedRaidController. Unless you are after the fun of making it go, this will save some hassle.
The results of a partly supported controller are not as simple as may be expected. I've seen a server with the build in HardwareRaid turned on and when a custom LinuxDistro? was installed, it ingored the Raid and install on to the two SCSI disk directy. This was discovered when pulling out one of the 'mirrored' HotSwappable disks.
One page links to SupportedRaidController:
