Compaq AlphaServer GS60 Operation Manual page 325

NOTE: If you select a drive for the drive group by mistake or you want to redefine a
drive group, highlight the Cancel Group option and press the Enter key. The
cursor appears on the first drive in a group on the matrix. Move the cursor to
the drive group you want to cancel and press the Enter key. You can only delete
drive groups in the reverse order in which you arranged them.
For more information on arranging a drive group, creating a logical RAID drive,
defining a spare drive, and specifying the caching policy, refer to the StorageWorks
RAID Array 200 Subsystems Controller Installation and Standalone Configuration
Utility User's Guide.
Running Configuration Utilities from the SRM Console C-9