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