Applies to SnapCenter Plug-in for Exchange (SCE) 4.5 and higher Issue During the upgrade of an Exchange DAG Cluster, there was a short downtime of the Exchange databases. In the event log of the all n...Applies to SnapCenter Plug-in for Exchange (SCE) 4.5 and higher Issue During the upgrade of an Exchange DAG Cluster, there was a short downtime of the Exchange databases. In the event log of the all nodes in the the Upgrade, it can be seen that the Exchange Information Store Service was restarted.