Group Leader Array
In a multi-array group, the array serving as the group leader maintains configuration data and hosts the management IP address. In a group of iSCSI arrays, all communication received at the discovery IP address is sent to the leader of the group. Fibre Channel arrays do not use the discovery IP address.
If an array is the group leader, it cannot be removed from the group. You can use the CLI command group --status to determine whether there is a backup group leader array, and if it is in sync with the group leader array.
The backup group leader array stores configuration data that is a replica of the data on the group leader. You can migrate the group leader functions from the group leader array to the backup group array by executing the CLI command group --migrate from the group leader array.
After the migration task is completed, the backup group leader becomes the group leader and you can remove the array that was previously the group leader.