D. Configuring the High Availability Option for Windows Clustering : Ingres High Availability Option
 
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Ingres High Availability Option
The Ingres High Availability Option for clusters runs application instances only on a single node. Depending on how the data service has been configured, when the fault monitor detects an error, it either attempts to restart the instance on the same node or to start the instance on another node for failover.
Note:  The Ingres High Availability Option is not scalable; that is, it does not provide active instances on multiple nodes.