Global Update Manager is a feature that was introduced in Windows Server 2012 R2 for fail-over clustering, which enables configuration of how the cluster database is updated.  The three configuration for a fail-over cluster are as follows:     By default, value 1 is automatically set for a Hyper-V fail-over cluster, which means that the cluster is operating in an asynchronous mode.  A write only needs to be committed to a.. Read More