Disk Utility Cannot Verify a RAID Volume
Status: NOT fixed as of Mac OS X 10.7.4.
This kind of inattention to details shows Apple’s cavalier approach to system updates— exercise care when upgrading to a new Mac OS X version. See also how Apple simply removed a drive API without warning, and in a minor release!
RAID volumes created with Disk Utility cannot be verified by Disk Utility.
You cannot make this stuff up. Disk Utility simply does nothing when theor buttons are clicked.