Global views are always present in the vSphere Client, regardless of which linked instance of vCenter Server you connect to. A plug-in instance selector enables you to choose between plug-in servers. For example, if you connect to VC3 you can choose between the global views of plug-in A instances registered with VC1 and VC2.

The visibility of an object-specific plug-in view depends on which vCenter Server instance manages the object. When you select an object managed by a given vCenter Server instance, you have access to object-specific views served by the plug-ins registered with that vCenter Server instance. For example, if you connect to VC3 and select an object managed by VC1, the vSphere Client displays the object-specific view served by plug-in A. However, if you connect to VC1 and select an object managed by VC3, the vSphere Client does not display the object-specific view because VC3 has no instance of plug-in A registered.

Plug-in visibility can also be limited by version differences between the plug-in and your vSphere Client. For example, suppose you connect to VC3 and select an object managed by VC2, but the instance of plug-in A registered with VC2 uses a new method not recognized by the older version of the JavaScript API served by VC3. Your version of the vSphere Client is unable to display the view served by plug-in A.