Volume groups

A volume group is a set of physical volumes that AIX® treats as a contiguous, addressable disk region.

Volume groups are configured to the AIX operating system, and can be included in resource groups in PowerHA® SystemMirror®. In the PowerHA SystemMirror environment, a shared volume group is a volume group that resides entirely on the external disks that are shared by the cluster nodes. Shared disks are those that are physically attached to the cluster nodes and logically configured on all cluster nodes.