Microsoft clustering is supported and operates as defined in Microsoft documentation, with the following exceptions:
Clusters are always paired.
If you drag a node into or out of the console, both the active and passive nodes appear.
The passive node is always grayed out.

Servers belonging to a cluster are identified
by a special icon (
).
Hovering the mouse over a clustered node displays a tooltip containing information about the association of the server or node with the cluster.

Both nodes require a license; however, special pricing is available for active/passive node clusters.
If the active node fails, all schedules and policies will be seamlessly transferred to the passive node.
NOTE: Do not place a configuration server or the DigiStore service on any server that is part of an Exchange cluster.
NOTE: DigiVault does not support failover from an active node to another active node at this time.
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