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|Oracle Solaris Cluster Data Services Developer's Guide Oracle Solaris Cluster 4.0|
To a network client, a failover or switchover appears to be a crash of the logical host followed by a fast reboot. Ideally, the client application and the client-server protocol are structured to do some amount of retrying. If the application and protocol already handle the case of a single server crashing and rebooting, they can also handle the case of the resource group being taken over or switched over. Some applications might elect to retry endlessly. More sophisticated applications notify the user that a long retry is in progress and enable the user to choose whether to continue.