You can enable vSAN on an existing cluster, and configure features and services.


Verify that your environment meets all requirements. See "Requirements for Enabling vSAN" in vSAN Planning and Deployment.


  1. Navigate to an existing host cluster.
  2. Click the Configure tab.
  3. Under vSAN, select Services.
    1. Select a configuration type (Standard vSAN cluster, Two node vSAN cluster, or Stretched cluster.
    2. Select I need local vSAN Datastore if you plan to add disk groups or storage pools to the cluster hosts.
    3. Click Configure to open the Configure vSAN wizard.
  4. Select vSAN ESA if your cluster is compatible, and click Next.
  5. Configure the vSAN services to use, and click Next.
    Configure data management features, including deduplication and compression, data-at-rest encryption, data-in-transit encryption. Select RDMA (remote direct memory access) if your network supports it.
  6. Claim disks for the vSAN cluster, and click Next.
    For vSAN Original Storage Archtecture (vSAN OSA), each host that contribute storage requires at least one flash device for cache, and one or more devices for capacity. For vSAN Express Storage Architecture (vSAN ESA), each host that contributes storage requires one or more flash devices.
  7. Create fault domains to group hosts that can fail together.
  8. Review the configuration, and click Finish.