The configuration of the management domain and NSX-T workload domain in your VMware Cloud Foundation environment must support extending the vSAN datastore across two availability zones. Adding a second availability zone to the NSX-T workload domain also requires ESXi hosts for the zone and a location for the vSAN witness appliance.

  1. Deploy the management domain in a configuration with multiple availability zones.

    1. Deploy the VMware Cloud Foundation stack in the management domain of your SDDC by using VMware Cloud Builder. See VMware Cloud Foundation Planning and Preparation Guide and VMware Cloud Foundation Architecture and Deployment Guide.

    2. Configure the management domain with a second availability zone by using a vSAN stretched cluster. See the Stretching Clusters section of the VMware Cloud Foundation Operations and Administration Guide documentation.

  2. By using SDDC Manager, deploy an NSX-T workload domain with a configuration that supports the subsequent addition of a second availability zone.

    SDDC Manager supports automatic deployment of workload domains with a single availability zone. See Working with the Management Domain and VI Workload Domains in VMware Cloud Foundation Operations and Administration Guide.

  3. In SDDC Manager, create a network pool for the vSphere vMotion and vSAN subnets in Availability Zone 2.
  4. Install the ESXi Hosts for the second availability zone.

    See Installing ESXi Software on Cloud Foundation Servers in VMware Cloud Foundation Operations and Administration Guide.

    Commissioning the hosts for the deployed workload domain is not required because you must configure IP subnets for the second availability zone that are different from the subnets in the initial availability zone.

  5. Provide a third location for the vSAN witness appliance.

    The vSAN witness appliance must have access to the SDDC management network.

For information about the configuration of the environment, see Specification of an NSX-T Workload Domain with Multiple Availability Zones and Example IP and DNS Configuration of an NSX-T Workload Domain with Multiple Availability Zones.