WSFC - Event ID 1135/1177/1564 FailoverClustering

There was an issue relating to the cluster failing over every night during the VM level backups. This was caused by the VM snapshots that are taken and there being a brief interruption to the network during this process. The following errors were logged in the event logs:

To resolve this the cluster network thresholds have been customised to allow for a brief drop out before failing over the cluster (20 seconds).