BlackBerry blackberry enterprise server for microsoft exchange 用户手册
• informs the standby BlackBerry Enterprise Server that it self-demoted
Scenario: What happens after a primary
BlackBerry Enterprise Server stops
responding
If a primary BlackBerry Enterprise Server stops responding, the standby BlackBerry Enterprise Server performs one of two
actions depending on whether its health score is above or below the promotion threshold.
The standby BlackBerry Enterprise Server can perform the following actions if the messaging server, BlackBerry
The standby BlackBerry Enterprise Server can perform the following actions if the messaging server, BlackBerry
Infrastructure, and BlackBerry Configuration Database are available.
Action that the standby BlackBerry Enterprise Server performs when its
health score is above the promotion threshold
1. The standby BlackBerry Enterprise Server determines that the primary BlackBerry Enterprise Server stopped
responding.
2. The standby BlackBerry Enterprise Server checks its own health score and determines that the health score is above
the promotion threshold.
3. The standby BlackBerry Enterprise Server opens active connections to the BlackBerry Configuration Database and
messaging server.
4. If your organization's environment includes the BlackBerry Enterprise Server for Novell GroupWise, the standby
BlackBerry Enterprise Server starts the GroupWise SOAP connector.
5. The standby BlackBerry Enterprise Server tries to open an SRP connection to the BlackBerry Infrastructure.
6. When the connection to the BlackBerry Infrastructure is stable, the standby BlackBerry Enterprise Server writes its
6. 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.
Action that the standby BlackBerry Enterprise Server performs when its
health score is below the promotion threshold
1. The standby BlackBerry Enterprise Server determines that the primary BlackBerry Enterprise Server stopped
responding.
2. The standby BlackBerry Enterprise Server checks its own 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
standby BlackBerry Enterprise Server can recover.
The standby BlackBerry Enterprise Server cannot become the primary instance. You must resolve any issues before the
standby BlackBerry Enterprise Server can recover.
Feature and Technical Overview
BlackBerry Enterprise Server high availability
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