If the external PSC fails, or if you want to distribute the load of an external PSC, you can configure the vCenter Server instance to point to a different PSC in the same domain and site.

The steps are as follows:

1. SSH the vCenter Server instance using the root credentials and enable the shell.
2. To repoint vCenter Server, run the following command:

 cmsso-util repoint --repoint-psc psc_fqdn  

Here, psc_fqdn is the FQDN (the value is case-sensitive) or the static IP address of the external PSC.

3. Using the vSphere Client, log in to the vCenter Server instance to verify that the instance is running and that you can manage it. The vCenter Server instance is now registered with the new PSC.