You can configure Control-M/EM in a cluster environment on UNIX and Window:
Control-M/EM Windows cluster configuration: The Control-M/EM Windows installation is cluster aware. All components defined as part of the installation are defined as cluster resource and are managed by the cluster manager.
Control-M/EM UNIX cluster configuration: The Control-M/EM UNIX installation is not cluster aware. You need to configure the components using BMC demo scripts.