A workload domain consists of VMware ESXi hosts managed by a single VMware vCenter instance, storage for workload data, and network equipment to connect to the data center.

Compute Workload Domain: The compute workload domain can contain multiple vSphere clusters. These clusters can contain a minimum of two ESXi hosts and a maximum of 96 or 64 hosts (when using vSAN), depending on the resource and availability requirements of the solution being deployed. You can use this compute workload domain to add cell site hosts for the Telco Cloud Platform RAN deployments. For more information about configuration limits for ESXi hosts and vCenter, see vSphere Configuration Maximums.

Figure 1. Workload Domain Architecture
Workload Domain Architecture