A data center is the highest level of abstraction in Red Hat Virtualization. A data center is a container that is comprised of three types of sub-containers:
The storage container holds information about storage types and storage domains, including connectivity information for storage domains. Storage is defined for a data center, and available to all clusters in the data center. All host clusters within a data center have access to the same storage domains.
The network container holds information about the data center's logical networks. This includes details such as network addresses, VLAN tags and STP support. Logical networks are defined for a data center, and are optionally implemented at the cluster level.
The cluster container holds clusters. Clusters are groups of hosts with compatible processor cores, either AMD or Intel processors. Clusters are migration domains; virtual machines can be live-migrated to any host within a cluster, and not to other clusters. One data center can hold multiple clusters, and each cluster can contain multiple hosts.