BlackBerry blackberry enterprise server for microsoft exchange Manual De Usuario

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Component
High availability type
Description
assigns the active connection to another BlackBerry 
Collaboration Service instance.
BlackBerry Configuration 
Database
database mirroring
If you install the BlackBerry Configuration Database on 
Microsoft SQL Server 2005 SP2 or later, you can configure 
database mirroring. If the principal BlackBerry 
Configuration Database stops responding, the BlackBerry 
Enterprise Server fails over to the mirror BlackBerry 
Configuration Database.
BlackBerry MDS Connection 
Service
failover with an active 
connection to one instance 
and standby connections to 
other instances
When you install two or more BlackBerry MDS Connection 
Service instances, you can create a BlackBerry MDS 
Connection Service pool for each BlackBerry Enterprise 
Server instance. Each BlackBerry Enterprise Server assigns 
one of the connections to the BlackBerry MDS Connection 
Service instances as the active connection, and the other 
connections as standby connections. If the BlackBerry MDS 
Connection Service that the active connection is assigned 
to stops responding, the BlackBerry Enterprise Server 
assigns the active connection to another BlackBerry MDS 
Connection Service instance.
BlackBerry Router
failover
When you install two or more BlackBerry Router instances, 
you can create a BlackBerry Router pool for each 
BlackBerry Enterprise Server or BlackBerry Enterprise 
Server pair. If a BlackBerry Router stops responding, the 
BlackBerry Enterprise Server selects another instance 
using information that is stored in the BlackBerry 
Configuration Database.
Feature and Technical Overview
BlackBerry Enterprise Server high availability
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