You can replace or change the witness host for a vSAN stretched cluster.
Change the ESXi host used as a witness host for your vSAN stretched cluster.
Verify that the witness host is not in use by another cluster, has a VMkernel configured for vSAN traffic, and has no vSAN partitions on its disks.
- Navigate to the vSAN cluster.
- Click the Configure tab.
- Under vSAN, click Fault Domains.
- Click the Change button. The Change Witness Host wizard opens.
- Select a new host to use as a witness host, and click Next.
- Claim disks on the new witness host, and click Next.
- On the Ready to complete page, review the configuration, and click Finish.