Redundant AppEngines during run time

In the run-time environment, the Active and Standby AppEngines first attempt to establish communication across the RMC. This occurs when an AppEngine belonging to a redundant pair first starts. Therefore, if one AppEngine is relocated later to a different WinPlatform, this communication between AppEngines can be reestablished.

During run time, the Active and Standby engines communicate with each other and monitor each other's status.

In the case of a hardware or software failure on the Active computer, the Standby AppEngine becomes the Active one. To move the new Standby AppEngine from its hosting computer, undeploy this AppEngine by selecting the On failure mark as undeployed option on the Undeploy dialog box. Reassign and redeploy it to a WinPlatform that is configured for redundancy on another computer.