I recently had a disk problem where RAID Utility said the disks and volumes were all fine but the volumes were simply absent in Disk Utility. I was at a total loss for what to do, since the system didn't even see any volumes to boot from unless I booted from the install disk, in which case the installer couldn't see any volumes to install on (although it would let me run Disk Utility and RAID Utility). Searching on the web, many people seem to have had a problem like this, but nobody ever came back to report if or how they fixed it.
RAID Utility's apparent total satisfaction with the situation rules out almost any hardware problem -- no need to see if the RAID card somehow got dislodged or anything like that. Even verifying the RAID set (which takes time measured in days -- don't bother) didn't indicate any problems.
In my case, there was a subtle clue from RAID Utility that something was amiss: Each volume was listed as having zero partitions. [crarko adds: I woul ...
In my case, there was a subtle clue from RAID Utility that something was amiss: Each volume was listed as having zero partitions. [crarko adds: I woul ...