If you want to add capacity to a workload domain, you can use the SDDC Manager UI to add a vSphere cluster.
For the management domain, all vSphere clusters must use vSAN for principal storage. For VI workload domains, vSphere clusters can use vSAN, NFS, VMFS on FC, or vVols for principal storage. If a VI workload domain has multiple clusters, each cluster can use a different type of principal storage, as long as all hosts within a vSphere cluster use the same type.
You can run multiple add cluster tasks at the same time.
Prerequisites
- Verify that there are at least three hosts available in the SDDC Manager inventory. For information on commissioning hosts, see Commission Hosts.
Note: If the vSphere cluster is using NFS, VMFS on FC, or vVols as principal storage, and the VI workload domain is using vSphere Lifecycle Manager images as the update method, then only two hosts are required. Workload Management requires a vSphere cluster with a minimum of three ESXi hosts.
- Ensure that the hosts you want to add to the vSphere cluster are in an active state.
- If you choose License Now, you must have valid license keys for vSphere and vSAN (if applicable) with adequate sockets available in the SDDC Manager inventory. For more information, see Add a Component License Key in the SDDC Manager UI.
- If you are using DHCP for the NSX Host Overlay Network, a DHCP server must be configured on the NSX Host Overlay VLAN of the management domain. When NSX creates TEPs for the VI workload domain, they are assigned IP addresses from the DHCP server.