VMM 2012 supports Dynamic Optimization and Power Optimization on Hyper-V host clusters and on managed VMware ESX and Citrix XenServer host clusters that support live migration.
Power Optimization, an optional feature of Dynamic Optimization, is enabled only if a host group is configured for live migration of VMs through Dynamic Optimization. For meeting resource requirements and saving energy, it shuts down hosts not needed by the cluster and turns them on only when they are needed.
There is a requirement that the servers must have a baseboard management controller (BMC) that supports out-of-band management.
In order to configure the host BMC, the installed BMC controller must support one of the following BMC protocols: ...