Installation guide

Upgrading the BlackBerry

Enterprise Server software in

phases

If you use the phased upgrade process, you can maintain previous versions of the BlackBerry Enterprise Server software,

install additional BlackBerry Enterprise Server instances over time, and move user accounts to the latest BlackBerry

Enterprise Server versions.

When you use the phased upgrade process, all BlackBerry devices receive new IT policies. Devices that are running

BlackBerry Device Software version 4.0 or later receive new service books and wireless data synchronization occurs.

The BlackBerry Configuration Database and all BlackBerry Administration Service instances in the BlackBerry Enterprise

Server

domain must be the same version. Before you upgrade the BlackBerry Configuration Database, you must stop the

BlackBerry Administration Service services that run on all other computers in the BlackBerry Enterprise Server domain

until you upgrade the computers.

Advantages of the phased upgrade process include:

• You can move user accounts to the new BlackBerry Enterprise Server instances gradually to limit the number of service

books and IT policies that the BlackBerry Policy Service sends to devices at the same time.

• You can monitor system performance while you add user accounts.

• You can change your organization's environment during the upgrade process by changing which user accounts you

associate with each BlackBerry Enterprise Server instance.

Disadvantages of this upgrade process include:

• You require extra computers.

• You require additional SRP credentials.

• If you move user accounts from one BlackBerry Configuration Database to another, you lose the device options that you

backed up in the BlackBerry Configuration Database.

• You cannot use some new features (for example, one-to-many relationships between a BlackBerry MDS Connection

Service

or BlackBerry Collaboration Service and multiple BlackBerry Enterprise Server instances) in the BlackBerry

Enterprise Server until all BlackBerry Enterprise Server components are the same version.

Upgrade Guide Upgrading the BlackBerry Enterprise Server software in phases