vCenter Enhanced Linked Mode allows you to log in to any single instance of vCenter Server Appliance or vCenter Server and view and manage the inventories of all the vCenter Server systems in the group.
- For vCenter Server Appliance with embedded Platform Services Controller deployments, you can join up to 15 nodes in one vSphere Single Sign-On domain.
- For vCenter Server with external Platform Services Controller installations, you can join up to 10 external Platform Services Controller and 15 vCenter Server systems in a single vSphere Single Sign-On domain.
You can create a vCenter Enhanced Linked Mode group only during the deployment of vCenter Server Appliance or installation of vCenter Server. You cannot create a vCenter Enhanced Linked Mode group after you install vCenter Server or after you deploy the vCenter Server Appliance.