Blackberry ENTERPRISE SOLUTION SECURITY - SECURITY FOR DEVICES WITH BLUETOOTH WIRELESS TECHNOLOGY - TECHNICAL Uživatelský manuál stáhnout pdf (Strana 61)

BlackBerry Enterprise Server high availability

High availability permits you to provide minimum downtime for BlackBerry® services if BlackBerry® Enterprise Server components

stop responding or if they require maintenance. BlackBerry Enterprise Server high availability consists of a minimum of two

BlackBerry Enterprise Server instances and the BlackBerry Configuration Database which is replicated across two database

servers. High availability is designed so that no single point of failure exists in the BlackBerry® Enterprise Solution that could

break the messaging and application data flow to and from BlackBerry devices.

When you configure the BlackBerry Enterprise Server for high availability, you install a primary BlackBerry Enterprise Server and

a standby BlackBerry Enterprise Server on different computers within the same network segment. These BlackBerry Enterprise

Server instances create a BlackBerry Enterprise Server pair. Both BlackBerry Enterprise Server instances use the same SRP

credentials and BlackBerry Configuration Database. You can configure the failover process to be automatic or manual.

The standby BlackBerry Enterprise Server connects to the primary BlackBerry Enterprise Server and checks periodically that the

primary BlackBerry Enterprise Server is healthy. The health of a BlackBerry Enterprise Server is determined by thresholds that

you can configure. If the health of the primary BlackBerry Enterprise Server falls below the failover threshold or if the primary

BlackBerry Enterprise Server stops responding, the standby BlackBerry Enterprise Server tries to promote itself. If the messaging

server and the BlackBerry Configuration Database remain available during the failover process, the message delays that users

might experience are similar to the delays that users experience when you start a BlackBerry Enterprise Server instance.

BlackBerry Enterprise Server high availability in a small-scale environment

The following diagram shows how you can configure a BlackBerry® Enterprise Server for high availability in a small-scale

environment. Each primary BlackBerry Enterprise Server instance requires its own standby BlackBerry Enterprise Server instance.

You install the primary BlackBerry Enterprise Server and standby BlackBerry Enterprise Server on different computers. You can

install all BlackBerry Enterprise Server components on both computers to minimize the number of computers that the BlackBerry

Enterprise Server environment requires.

Feature and Technical Overview

BlackBerry Enterprise Server high availability

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Blackberry ENTERPRISE SOLUTION SECURITY - SECURITY FOR DEVICES WITH BLUETOOTH WIRELESS TECHNOLOGY - TECHNICAL Uživatelský manuál Strana 61