IOS has one group for each LPAR Cluster in the sysplex. (An LPAR Cluster consists of all systems on a processor that belong to the same sysplex.) The group has one member per system in the LPAR Cluster that is running z/OS® V1R1 or higher in zArchitecture mode. The system generates the group name, which is in the format SYSIOSxx. The "D IOS,GROUP" command can be used to display the IOS group names and the systems that belong to each group.