Windows Server 2012 Features: Hyper-V Replicas and Live Migration
Hyper-V Replica provides asynchronous replication of virtual machines (VMs) from a Hyper-V host or cluster to a remote Hyper-V host or cluster to provide business continuity and fail-over recovery. This new, built-in feature tracks write operations on the source Host or cluster and replicates them to the destination host or cluster so that both VMs are in constant lockstep. If the local VM fails (or if an administrator manually fails-over) the remote replica assumes its place. All of this happens without having any specialized storage or networking hardware requirements.
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