Chapter 11 - Upgrading to Office Communications Server 2007

Abstract

This chapter discusses the step for migrating from LCS 2005 to OCS 2007. These steps comprise installing new OCS 2007 servers into the environment, integrating the new servers into the new environment, and then removing old LCS 2005 servers once the new OCS 2007 servers have successfully taken the place of the LCS 2005 system. When migrating, it is a best practice to start from the outermost servers and then proceed into the internal servers. In the side-by-side migration process, one should install new OCS 2007 edge servers in place of old LCS 2005 access proxy servers; replace old LCS 2005 director servers with new OCS 2007 director servers; and add new OCS 2007 front-end servers and move users from old LCS 2005 front-end servers to the new OCS 2007 servers. If a server or user fails to migrate to OCS 2007 one can still move the organization back to LCS 2005. With limited or no impact to users. Once the migration of the users from LCS 2005 to OCS 2007 is done, new features of OCS 2007 such as Web conferencing, VoIP telephony, and multipoint video conferencing can be added. The migration from LCS 2005 to OCS 2007 is one of the easier migrations among the Microsoft Windows server system migrations.