A cluster is a set of physical hosts that are treated as a resource pool for a set of virtual machines. Hosts in a cluster share the same network infrastructure, the same storage and the same type of CPU. They constitute a migration domain within which virtual machines can be moved from host to host.
By default, Red Hat Enterprise Virtualization creates a cluster at installation. To access it, navigate to the Tree pane, click Expand All and select the Default cluster. On the Clusters tab, the Default cluster displays.
Figure 3.4. Clusters Tab
For this document, the Red Hat Enterprise Virtualization Hypervisor and Red Hat Enterprise Linux hosts will be attached to the Default host cluster. If you wish to create new clusters, or live migrate virtual machines between hosts in a cluster, see the Red Hat Enterprise Virtualization Evaluation Guide.