When you add an ESX/ESXi host to a vSphere cluster that vCloud Director uses, you must prepare the host before a provider virtual datacenter can use its resources. You can unprepare a host to make it unavailable for use in the vCloud Director environment.
For information about moving virtual machines from one host to another, see Move Virtual Machines from one ESX/ESXi Host to Another.
You cannot prepare a host that is in lockdown mode. After you prepare a host, you can enable lockdown mode.
Disable the host and ensure that no virtual machines are running on the host.
- Click the Manage & Monitor tab and click Hosts in the left pane.
- Right-click the host name and select Prepare Host or Unprepare Host.
- If you are preparing a host, type a user name and password and click OK.