After you complete prerequisites for upgrading and download the update, you install updates for the Identity Appliance and for all instances of the vRealize-Appliance. You can also choose to upgrade from an Identity Appliance or vSphere SSO appliance to vCenter Platform Services Controller (PSC).

Your vRealize Automation upgrade does not affect vSphere appliances, however, you must reconfigure vRealize Automation settings when you upgrade to PSC from an earlier version of the vSphere SSO or when you replace an Identity Appliance with PSC. For more information, see Upgrading to vCenter Platform Services Controller.