Hyper-V Replica is a Server 2012 & 2012 R2 feature that allows you to create a replica of a virtual machine running on Hyper-V on either of the platforms. If the primary VM fails, you can failover to the replica VM. Thus Hyper-V Replica can provide fault tolerance for a VM even if the entire host site should go offline.
A few months ago, I had a telephone interview for a senior networking position. The interview lasted for approximately forty-five minutes, three of us were on the call, me, the company’s technical director and an existing network engineer at the company.