You can edit cluster properties to enable vSAN for an existing cluster.

Prerequisites

Verify that your environment meets all requirements. See "Requirements for Enabling vSAN" in Administering VMware vSAN.

Procedure

  1. Navigate to an existing host cluster.
  2. Click the Configure tab.
    Option Description
    vSphere Client
    1. Under vSAN, select Services.
    2. (Optional) Enable deduplication and compression on the cluster. vSAN will automatically upgrade the on-disk format, causing a rolling reformat of every disk group in the cluster.
    3. (Optional) Enable encryption on the cluster, and select a KMS server. vSAN will automatically upgrade the on-disk format, causing a rolling reformat of every disk group in the cluster.
    4. (Optional) Select Allow Reduced Redundancy. If needed, vSAN will reduce the protection level of your VMs, while enabling deduplication and compression or encryption.
    vSphere Web Client
    1. Under vSAN, select General.
    2. Click the vSAN is turned ON Edit button.
    3. (Optional) If you want to enable deduplication and compression on the cluster, select the Deduplication and compression check box. vSAN will automatically upgrade the on-disk format, causing a rolling reformat of every disk group in the cluster.
    4. (Optional) If you want to enable encryption on the cluster, select the Encryption check box, and select a KMS server. vSAN will automatically upgrade the on-disk format, causing a rolling reformat of every disk group in the cluster.
  3. Click OK or Apply to confirm your selections.

What to do next

Claim the storage devices or create disk groups. See Administering VMware vSAN.