Scenario: What happens after a primary BlackBerry Enterprise Server stops responding
If a primary BlackBerry® Enterprise Server stops responding, the response of the standby BlackBerry Enterprise Server depends on whether its health score is above or below the promotion threshold.
The following responses assume that the messaging server, BlackBerry® Infrastructure, and BlackBerry Configuration Database are available.
Response of the standby BlackBerry Enterprise Server when its health score is above the promotion threshold
- The standby BlackBerry Enterprise Server determines that the primary BlackBerry Enterprise Server stopped responding.
- The standby BlackBerry Enterprise Server checks its health score and determines that the health score is above the promotion threshold.
- The standby BlackBerry Enterprise Server opens active connections to the BlackBerry Configuration Database and messaging server.
- The standby BlackBerry Enterprise Server tries to open an SRP connection to the BlackBerry Infrastructure.
- When the connection to the BlackBerry Infrastructure is stable, the standby BlackBerry Enterprise Server writes its identity as the primary BlackBerry Enterprise Server to the BlackBerry Configuration Database.
Response of the standby BlackBerry Enterprise Server when its health score is below the promotion threshold
- The standby BlackBerry Enterprise Server determines that the primary BlackBerry Enterprise Server stopped responding.
- The standby BlackBerry Enterprise Server checks its health score and determines that the health score is below the promotion threshold.
The standby BlackBerry Enterprise Server cannot become the primary instance. You must resolve any issues before the BlackBerry Enterprise Server can recover.
Parent topic: BlackBerry Enterprise Server high availability