Microsoft Live Communications Server 2005 SP1 to Microsoft Lync Server 2010 Migration Strategy White Paper


The Microsoft Live Communications Server 2005 SP1 to Microsoft Lync Server 2010 Migration Strategy white paper is now available from the Microsoft Download Center. This white paper outlines a migration strategy for migrating from Live Communications Server 2005 Service Pack 1 (SP1) to Lync Server 2010. As part of this strategy, this white paper introduces a newly supported scenario for interim coexistence of clients running Office Communicator 2005 and Lync 2010. Given that there is no supported migration path directly from Live Communications Server 2005 SP1 to Lync Server 2010, the proposed migration strategy requires you to perform several interim steps to move users to Lync Server 2010.

Author: Sekou Page

Publication date: Sep 2011

Product version: Lync 2010, Lync Server 2010, Live Communications Server 2005 SP1

Summary

This white paper outlines a migration strategy for migrating from Live Communications Server 2005 Service Pack 1 (SP1) to Lync Server 2010. As part of this strategy, this white paper introduces a newly supported scenario for interim coexistence of clients running Office Communicator 2005 and Lync 2010. Given that there is no supported migration path directly from Live Communications Server 2005 SP1 to Lync Server 2010, the proposed migration strategy requires you to perform several interim steps to move users to Lync Server 2010. At a high level, the migration strategy takes the following phased migration approach:

  1. Validate the existing environment as an updated and stable Live Communications Server 2005 SP1 environment where the latest updates are installed and all clients are running Office Communicator 2005.
  2. Migrate the Live Communications Server environment to an interim Office Communications Server 2007 R2 environment, leaving all clients running Office Communicator 2005.
  3. Decommission all Live Communications Server 2005 SP1 server infrastructure.
  4. Upgrade clients to Lync 2010.
  5. Move users from the interim Office Communications Server 2007 R2 environment to a Lync Server 2010 environment, with all users upgraded to clients running Lync 2010.
  6. Decommission the Office Communications Server 2007 R2 environment.

It is important to note that the final move of clients to Lync Server 2010 requires that you update all user accounts to support enhanced presence. After users have been moved to Lync Server 2010, clients running Office Communicator 2005 cannot sign in.

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Keywords: migration, upgrade, legacy clients, legacy servers, supported solutions

Comments (3)
  1. kapil says:

    How about if LCS users only use IM and that too internally (no remote access).

    We simple disable LCS user and enable him for LYNC .

    => Question is can we do this for 7000 users over a weekend and push LYNC clients ?

    1)  Plan is to setup LYNC environment and test with new users, test remote access too.

    2)  Then simply delete users in LCS and enable them for LYNC.

    Looking suggestions ?

    Thanks

    kapil

  2. Sekou Page says:

    Kapil,

    If you were to delete your users and then enable them for Lync you would lose contact data which may not be the best experience for your users.  The strategy in this document ensures you don't lose any data during the migration.  As for completing 7,000 users in a weekend I would think that depends primarily on your ability to push out software in a reliable manner in a short window of time.  Running the necessary scripts to enable hundreds or thousands of users at a time can be done in a relatively short amount of time.  Typically it is software distribution capabilities that will be the limiting factor.  I hope this helps.

    Sekou

  3. kapil says:

    Thanks Sekou for your reply.

    I need confirmation on this urgently . Else all my planning will go for a toss.

    Does Moc 2005 version latest 1.0.559.232 works with Lync. I have also allowed Client policy to allow all versions in lync

    SCENARIO

    • LCS user will be migrated to OCS .

    • When homes on OCS R2 this users has no issues login in moc2005

    • When moving this user to lync I have to enable this user for enhanced presence and move. This step is successful.

    • Though this user is enabled for enhanced presence , but has still not used moc 2007R2 or Lync client. So ideally he should be able to login in using MOC 2005 or 2007R1.

    I my case with user with version Moc2005  1.0.559.232 is not able to login.

    However he can login using moc 2007R1 2.0.6362.0  successfully.

    I am referring thetable in the  Whitepaper table :Known and Support Server and Client Coexistence Scenarios.

    Its suggests MOC 2005 .232 version should work with Lync.

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