You can add clusters to a cloud SDDC up to the maximum configured for your account.

Additional clusters are created in the same availability zone or availability zones as the initial SDDC.

When you deploy an additional cluster, whether it is a single availability zone cluster or stretched cluster, you do not have to select the same host type used in the initial cluster created for the SDDC. However, all hosts in a given cluster must be of the same type.

Logical networks you have created for your SDDC are automatically shared across all clusters. Compute and storage resources are configured similarly for all clusters. For example:
  • Each cluster contains a Compute-ResourcePool that has the same permissions as the one created in the initial SDDC cluster.
  • Each cluster contains a workloadDatastore that has the same permissions as the one created in the initial SDDC cluster.
Note: The first cluster created in the SDDC is reserved for management workloads, and contains the Mgmt-ResourcePool and vsanDatastore. Additional clusters are created as needed for the workloadDatastore.

Procedure

  1. Log in to the VMC Console at https://vmc.vmware.com.
  2. On the card for the SDDC you want to add a cluster to, select Actions > Add Cluster.
  3. Select the host type.
    Option Description
    i3 (Local SSD) Provision hosts with a fixed amount of local SSD storage per host.
    I3en (Local SSD) Provision hosts with a larger amount of local SSD storage per host. I3en hosts are currently only available with version 1.10v4 of the SDDC software, and are only available in some regions.
  4. Specify the number of CPU cores to enable for each host in the cluster.
    For i3 hosts, all CPU cores are enabled by default on each host in the cluster. If you'd like to disable some of the cores to save on licensing costs for applications that are licensed on a per-core basis, you can enable a subset of the available cores. This subset applies to all hosts in the cluster. Other cores on each host are disabled and remain disabled for the lifetime of the host.

    For i3en hosts, all CPU cores are hyperthreaded and offered as logical cores by default on each host in the cluster. If you'd like to disable some of the cores to save on licensing costs for applications that are licensed on a per-core basis, you can enable a subset of the available cores. This subset is offered as physical cores and applies to all hosts in the cluster. Other cores on each host are disabled and remain disabled for the lifetime of the host.

    Important: Reducing core count affects the compute performance of all workloads on the host and increases the likelihood of system performance degradation. For example, vCenter and vSAN overhead can become more noticeable, and operations like adding clusters and hosts can take longer to complete.
  5. Select the number of hosts in the cluster.
  6. click Add Cluster.

Results

A progress bar shows the progress of cluster creation.