You can change the name of an existing fault domain in your vSAN cluster.
- Navigate to the vSAN cluster in the vSphere Web Client.
- Click the Configure tab.
- Under vSAN, click Fault Domains and Stretched Cluster.
- Select the fault domain that you want to rename and click the Rename selected fault domain icon ().
- Enter a new fault domain name.
- Click OK.
The new name appears in the list of fault domains.