[tweetmeme source=”stalehansen” only_single=false]OCS 2007 R2 is now supported on Server 2008 R2 as base OS and as domain functional level. There is some specific prerequisites that need to be installed for Server 2008 R2. I have created a new guide for Server 2008 R2 here: https://msunified.net/2010/04/09/installing-ocs-2007-r2-prerequisites-on-windows-server-2008-r2/

Commands to install the necessary prerequisites for OCS 2007 R2 on Windows Server 2008 SP2

Front End on Windows Server 2008
ServerManagerCmd -i web-windows-auth web-mgmt-compat web-mgmt-console web-http-logging msmq-server msmq-directory powershell was-process-model was-config-apis desktop-experience rsat-addc

Installs the following components:

• [Web-Windows-Auth] – Windows Authentication
• [Web-Mgmt-Compat] – IIS 6 Management Compatibility
• [MSMQ-Server] – Message Queuing Server
• [MSMQ-Directory] – Directory Service Integration
• [RSAT-ADDC] – Active Directory Domain Controller Tools
• [WAS-Process-Model] – Process Model
• [WAS-Config-APIs] – Configuration APIs
• [Web-Mgmt-Console] – IIS Management Console
• [Web-Http-Logging] – HTTP Logging
• [PowerShell] – Windows PowerShell
• [Desktop-Experience] – Desktop Experience                                   

The last 3 in the list are not required, but they are highly recommended. IIS 7.0 Management Console is IMHO much easier to use than the IIS 6.0 version. The logging tools often come in handy when troubleshooting OCS IIS issues and PowerShell makes working with OCS WMI values a piece of cake.

NOTE: If you are to run the create pool wizard from the Front End server, you also need the MS SQL Native Client: X64 Package (sqlncli.msi) – 7963 KB
Also check out this post of mine whether to run create pool on OCS  Front End or Back End SQL server: https://msunified.net/2009/08/11/create-pool-%e2%80%93-run-on-ocs-or-sql-server/

Office Communicator Phone Edition deployment on Windows Server 2008
ServerManagerCmd -i Web-Static-Content

Installs the following components in addition to Front End prerequisites:

• [Web-Static-Content] – Static Content

NOTE: It exists default MIME types for both the .xml and the .cat extensions that is used by the updater. There is however no default for the .nbt extension and you need to configure it manually. See this post on how to do it http://www.codesalot.com/2010/communicator-phone-edition-update-issues/

Monitoring Server on Windows Server 2008
ServerManagerCmd -i msmq-server msmq-directory

Installs the following components:

• [MSMQ-Server] – Message Queuing Server
• [MSMQ-Directory] – Directory Service Integration

CWA Server on Windows Server 2008
ServerManagerCmd -i web-windows-auth web-digest-auth web-basic-auth web-mgmt-compat web-mgmt-console web-common-http web-ISAPI-ext web-ISAPI-filter web-request-monitor web-http-redirect web-http-logging

Installs the following components:

• [Web-Windows-Auth] – Windows Authentication
• [Web-Digest-Auth] – Digest Authentication
• [Web-Basic-Auth] – Basic Authentication
• [Web-Mgmt-Compat] – IIS 6 Management Compatibility
• [Web-Mgmt-Console] – IIS Management Console
• [Web-Common-Http] – Common-http-features
• [Web-ISAPI-Ext] – ISAPI Extensions
• [Web-ISAPI-Filter] – ISAPI Filters
• [Web-Request-Monitor] – Request Monitor
• [Web-Http-Redirect] – HTTP Redirection
• [Web-Http-Logging] – HTTP Logging

Mediation Server on Windows Server 2008
ServerManagerCmd -i rsat-addc

Installs the following components:

• [RSAT-ADDC] – Active Directory Domain Controller Tools 

To view a full listing of ServerManagerCmd commands see this page: http://blogs.techrepublic.com.com/datacenter/?p=294

Post used as a reference for this post
http://waveformation.com/2009/06/02/installing-ocs-2007-r2-prerequisites-on-windows-server-2008/