The presentation helps you to create fault-tolerant virtual machine storage pool by using minimalistic 2-node Hyper-V cluster. Watch the video now and see how easily the risk of failure can be eliminated.
you are not demonstrating fault tolerance when you 'restart' the node in the cluster. that is not representative of a hardware fault, where you node will fail in an ungraceful manner. live migration will not occur if you pull the plug on the node, representing a power outage. this is demonstrating high availability.