Description: Group table. The objects in hwPsGroupTable are used for performing operations associated with the protection group. The operations include creating and deleting a protection group, setting the protection group switchover function, setting the switchover recovery waiting time, setting the description information about a protection group, freezing and unfreezing a protection group, enabling and disabling a protection group, and querying the settings of a protection group. The index of this table is hwPgGroupId.