Installation guide

• For more information, see the BlackBerry Enterprise Server Installation Guide.
Change applications to support BlackBerry MDS Connection Service failover
In earlier versions of the BlackBerry® Enterprise Server, an organization's push applications connected to only one instance of
the BlackBerry MDS Connection Service central push server. You must make sure that your organization's applications can access
all central push servers.
1. Change the applications to access central push servers only, and not BlackBerry MDS Connection Service instances that
administrators have not configured to also act as central push servers.
2. To change your organization's applications to support central push server failover, perform one of the following actions:
• Configure an HTTP or HTTPS proxy server that applications send requests through. Use this option if the applications
are located on the Internet. Optionally, you can place the proxy server in the DMZ.
• Configure the application servers to use a list of IP addresses to find an available central push server. If a central push
server does not respond to a request, the application can try to connect to another central push server.
• Configure a hardware load balancer such as the BIG-IP® load balancer. The load balancer accepts all requests from the
application servers, and distributes the traffic to the various central push servers. If a central push server does not respond,
the load balancer redistributes the requests to the remaining central push servers.
• Configure the application to use the new HTTP response header x-rim-push-gateways.
Configuring support for new attachments
Configure an upgraded BlackBerry Enterprise Server to support new attachment extensions
When you upgrade a BlackBerry® Enterprise Server instance, the upgrade process does not automatically add the new attachment
extensions that the latest BlackBerry Enterprise Server version supports. You must add the new attachment extensions after the
upgrade process completes so that the BlackBerry Enterprise Server can recognize the new attachments and send them to a
BlackBerry Attachment Service instance for processing. The following list of supported file formats were added to versions later
than BlackBerry Enterprise Server version 4.1 SP3: .amr*, .wmf, .wma, .pptx, .docx, .xlsx, .odt and .ott files.
1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology
> BlackBerry Domain > Component view > Attachment > Connector.
2. Click the BlackBerry Attachment Connector instance for the BlackBerry Enterprise Server.
3. Click Edit instance.
4. Click Supported Attachment Server instances.
5. For the BlackBerry Attachment Service instance that you want the BlackBerry Enterprise Server to send new attachments
to, click the Edit icon.
6. Add the new attachments to the attachments extensions list.
7. Click the Save icon.
Upgrade Guide
Change applications to support BlackBerry MDS Connection Service failover
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