Office Communications Server 2007 R2 is available in Standard Edition and Enterprise Edition. There are two different options for setting up Enterprise Edition. The recommended option is a Consolidated configuration. The second option is Expanded configuration. Here is a summary of the different editions and options.
Standard Edition Setup. All components of Office
Communications Server 2007 R2 are installed on one physical
Enterprise Edition Consolidated Configuration.A dedicated
computer with a Microsoft SQL Server database server as the
back-end server. One computer or multiple load-balanced computers
serve as Front End Servers. These servers contain all other
components with the exception of Monitoring Server, Archiving
Server, and Mediation Server roles, none of which can be co-located
with a Front End Server.
Enterprise Edition Expanded Configuration. A dedicated
computer with a SQL Server database server as the back-end server.
A dedicated computer exists for each of the following: Application
Sharing Server, Web Conferencing Server and Web Components Server,
and A/V Conferencing Server. Front End Server contains all other
components of Office Communications Server 2007 R2. Like the
Consolidated configuration, there are also dedicated servers for
Monitoring Server, Archiving Server, and Mediation Server roles.
As was mentioned at the beginning of this guide, all of these editions and configurations can be set up from the command line. However, an Expanded configuration setup is possible only from the command line. Therefore, this section describes the commands that can be used to install Office Communications Server 2007 R2 from the command line in an Expanded configuration.