How to register an ESX Server host in a Virtual Center?
Sometimes you need to move an ESX Server host into another vCenter Management Server. To move an ESX host from one Virtual Center to another, you must remove the host from Virtual Center first , then add the host to a new VirtualCenter. It may appear like an overwhelming task but if you follow the instructions below, it should be as easy as setting up a mobile broadband connection on you laptop.
To remove the ESX host from VirtualCenter:
01.) If the managed host is in a cluster, right-click the cluster. Set the DRS mode to manual and disable VMware High Availability by de-selecting Configure HA. Click OK and wait for the reconfiguration to complete.
02.) Click the Inventory button in the navigation bar, expand the inventory as needed, and click the appropriate managed host.
03.) Right-click the managed host icon in the inventory panel and choose Remove. Click Yes to confirm
Then, to add the ESX host to a new VirtualCenter:
01.) Connect VMware Infrastructure Client to the new vCenter.
02.) Click Inventory in the navigation bar and Expand the inventory as needed, and click the appropriate datacenter or cluster.
03.) Choose File > New > Add Host.
04.) When the wizar appears, enter the name or IP address of the ESX host, then enter the username and password and click Next.