I am upgrading my servers from Windows Server 2008 R2 to 2012 R2. Based on all of the information that I had read, the best way to do this was to: Remove Node 1 from cluster. Uninstall Failover feature on node 1. Upgrade Server OS from 2008 R2 to 2012 R2 on node 1. Install Failover feature on node 1...