Specifies the spare disks to be removed from use for a unit.
            Multiple disks must be enclosed in parenthesis.

            Format:
                    /DEL_SPARE=(disk numbers[,...])

           Note: If you delete a spare disk (that is, assigned to more
                 than one LUNs) from one unit, then the disk specified in
                 the DEL_SPARE qualifier will be deleted from all the
                 units in a disk group.