Comments posted on behalf of Lars Reuther, a senior developer on the live migration team:
"You are using the "Manage Virtual Machine" option to modify the settings of the VM. This is actually not the recommended way, instead users should directly invoke the settings dialog of the VM through the "Settings..." option on the VM resource.
The benefit of this way is that the cluster manager automatically invokes the "Refresh virtual machine configuration" operation (which is not invoked if you go through the "Manage virtual machine" option), which updates the information about the VM configuration that is cached by the cluster resources. This information includes the dependencies to the storage volumes (e.g., to the CSV volumes), so without the refresh operation the cluster resources would not pick up if an additional disk dependency is created e.g. by adding a new disk on a different CSV volume to the VM. This can affect the functionality, as the cluster service uses these dependencies for instance to make sure VMs are properly shut down before a CSV volume is taken offline.
The video describes how networks can be configured for the use by the cluster service. We provide additional functionality that allows a similar configuration for the network used by Live Migration.
This allows a more fine-grained control over the networks used for the migration, e.g. to dedicate a high-speed network for live migration or to separate the live migration traffic from other cluster traffic (such as traffic generated by CSV). It also allows excluding networks from the use for a migration, i.e. to prevent the migration traffic to use a public network for security reasons (we will not listen for network connections on networks that are not enabled)."
