Before you can configure the vSAN Witness Host, you must register it with vCenter Server.


  1. Use the vSphere Client to log in to the vCenter Server containing the cluster that you want to stretch.
  2. In the vSphere Client, navigate to the data center.
  3. Right-click the data center and select Add Host.
    Important: You must add the vSAN Witness Host to the datacenter. Do not add it to a folder.
  4. On the Name and location page, enter the Fully Qualified Domain Name (FQDN) of the vSAN Witness Host and click Next.
    Note: Do not use the IP address.
  5. On the Connection settings page, enter administrator credentials and click Next.
  6. On the Host summary page, review the summary of the host details and click Next.
  7. On the Host lifecycle page, the check box Manage host with an image is selected by default.
    • If you want to manage the host with an image, leave the check box selected and click Next.
    • If you do not want to manage the host with an image, deselect the check box and click Next.
  8. If you manage the host with an image, on the Image page, set up the desired image and click Next.
  9. On the Assign license page, assign an existing license and click Next.
    Note: Do not create a new license.
  10. Review the summary and click Finish.