After you add an ESXi host to a VMware vSphere ® cluster that vCloud Director uses, you must prepare the host before a provider virtual datacenter can use its resources. Unpreparing a host makes it unavailable for use by vCloud Director.

You cannot prepare a host that is in lockdown mode. After you prepare a host, you can enable lockdown mode.


  1. Redeploy all VMs on the host to other hosts. See Move Virtual Machines from one ESXi Host to Another.
  2. Disable the host.


  1. Click the Manage & Monitor tab and click Hosts in the left pane.
  2. Right-click the host name and select Prepare Host or Unprepare Host.
    If you are preparing a host, supply the username and password of a host administrator, then click OK.