I have recently started to receive issue with our exchange 2010 DAG, one of the primary site DAG member server which is holding the active DB copy move the DB to another member server in the primary site.
DAG Member : Primary Site: Server01(DB01,DB02), Server02(DB03,DB04)
Secondary site: Server04 (DB01,DB02,DB03,DB04) passive copy
As part of the investigation, notice that Windows service 'ClusSvc' is stopped and the server which is moving the active DB copy is doing the v-motion during that time and causing the cluster service to fails and move the DB.
I have found that Vmware has article addressing the Microsoft Failover Cluster for Exchange best practices by adjusting Samesubnetdelay to two seconds and keeping the SameSubnetThreshold to 5, which gives a 10 seconds threshold heartbeat.
Could you please advise how can I investigate how many seconds the Exchange box lost the network connectivity during the Vmotion, does the Cluster log helps to identify? and adjusting Samesubnetdelay to two seconds and keeping the SameSubnetThreshold to 5, which gives a 10 seconds threshold heartbeat, will that help. Please advise.