Windows Server 8 Hyper-V Virtual Machine Replication
One of the biggest new features in Windows Server 8 Hyper-V is Hyper-V Replica. Hyper-V Replica allows you to replicate Virtual Machines over the network to another Hyper-V Hosts. This is great if you replicate the VM to another datacenter or if you don’t want to create a Hyper-V Cluster and still have the requirement to start the Virtual Machine in 30 minutes on another host.
With the Hyper-V VM Move feature you can even push this and live migrate a Virtual Machine to another host even if you don’t have a cluster. This can be useful if you have a maintenance window on your Hyper-V hosts.