Q. What are the defaults for Windows Server 2016 Failover Clusters related to latency?
A. In Windows Server 2012 R2 some of the latency related settings of a cluster such as SameSubnetThreshold and CrossSubnetThreshold were modified once Hyper-V VMs were present. In Windows Server 2016 the cluster defaults have changed as follows (to essentially match the values previously used only when Hyper-V was present):
| Property | Win2016 Default | Description |
| SameSubnetDelay | 1 | Frequency heartbeats (HB) sent |
| SameSubnetThreshold | 10 | Missed HB before interface considered down |
| CrossSubnetDelay | 1 | Frequency HB sent to nodes on dissimilar subnets |
| CrossSubnetThreshold | 20 | Missed HB before interface considered down to nodes on dissimilar subnets |
| CrossSiteDelay | 1 | Frequency HB sent to nodes on dissimilar sites |
| CrossSiteThreshold | 20 | Missed HB before interface considered down to nodes on dissimilar sites |
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