Blackberry SWD-20120924140022907 manual Changing the promotion threshold and failover threshold

Administration Guide Configuring BlackBerry Enterprise Server high availability

Configuring failover to occur when the standby BlackBerry Enterprise Server is in a healther state than the active BlackBerry Enterprise Server

If you move the failover threshold and promotion threshold so that the promotion threshold is lower than the failover threshold, failover occurs only if the standby BlackBerry Enterprise Server is healthier than the primary BlackBerry Enterprise Server that is sufficiently healthy to run. You can move the promotion threshold so that it is lower than the failover threshold if your organization wants to limit failover occurrences and requires that failover occurs only if the standby BlackBerry Enterprise Server meets all of your organization’s requirements.

In this scenario, you configure the standby BlackBerry Enterprise Server to promote itself when it can provide most or all of the BlackBerry services that your organization requires. The primary BlackBerry Enterprise Server does not demote itself as long as it can provide at least the BlackBerry services that your organization considers essential.

For example, you configure the failover threshold so that the primary BlackBerry Enterprise Server must be able to connect to the BlackBerry Infrastructure and messaging server and browse the Internet. You configure the promotion threshold so that the standby BlackBerry Enterprise Server must be able to connect to the BlackBerry Infrastructure and messaging server, browse the Internet, and process attachments. If the primary BlackBerry Enterprise Server cannot connect to the messaging server and the standby BlackBerry Enterprise Server cannot process attachments, the standby BlackBerry Enterprise Server cannot promote itself because it does not meet all of its requirements.

Changing the promotion threshold and failover threshold

Each primary and standby BlackBerry Enterprise Server instance has a failover threshold and a promotion threshold. The BlackBerry Enterprise Server uses the failover threshold when it is an primary instance to determine when it needs to demote itself, and it uses the promotion threshold when it is a standby instance to determine whether it can promote itself to become the primary instance.

You can configure the thresholds for each BlackBerry Enterprise Server pair.

Change the promotion threshold and failover threshold and the order of the health parameters

You can change the promotion threshold and failover threshold and the order of the health parameters to meet the requirements of your organization.

1.In the BlackBerry Administration Service, on the Servers and components menu, expand High availability > Highly available BlackBerry Enterprise Servers.

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