BlackBerry protection requirements

In addition to the general application requirements, you must also meet the following requirements to protect BlackBerry.

BlackBerry versions—Double-Take Availability can protect BlackBerry Enterprise Server 4.1.4 through 4.1.6 for Microsoft Exchange.
Server and network configuration—The following requirements and limitations apply to your BlackBerry server and network configuration.

Only the Windows 2003 operating systems listed in the general source and target server requirements can be used to protect BlackBerry.
Each source and target must have Microsoft Exchange 2003 or 2007.
The version of Exchange on the source and target must be identical.
Each source and target must have SQL Server 2000 with Service Pack 4, 2005, or 2008 installed.
Double-Take Availability does not support database only mode. Only the instance of SQL where BlackBerry is installed will be protected.
You should use the same version, service pack, and architecture (32-bit or 64-bit) of SQL Server on both the source and target servers. The only exceptions is in database only protection mode you. In this case, you can use a newer version of SQL Server on the target server, or you may have a 32-bit source and a 64-bit target. For example, you may want migrate from SQL Server 2000 on the source to SQL Server 2005 on the target, or migrate data from a 32-bit source to a 64-bit target. However, you cannot failback using different versions of SQL Server on the source and target.
The name of the BlackBerry server on the source and target must be unique.