Migrate users from Existing Windows 2003 Domain to new 2008 Domain

Discussion in 'Active Directory' started by Tom, Jul 8, 2009.

  1. Tom

    Tom Guest

    We have users on an existing Windows 2003 Domain, the company would like to
    move users to a new 2008 Domain (new AD as they want to change the domain
    name) What is the best way to go about this?
    Tom, Jul 8, 2009
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  2. ADMT is the solution. If Exchange is involved, it's a bit more complicated.

    For 2008 (run ADMT 3.1 on the 2008 side):

    ADMT v3.1 Guide: Migrating and Restructuring Active Directory Domains

    Active Directory Migration Tool version 3.1

    Password Export Server version 3.1 (x86)

    Password Export Server version 3.1 (x64)

    Domain Migration Cookbook - Index and Cover:

    ADMT requires a two way trust between the forests - Create a trust between the two forests

    If Exchange is involved:

    If Exchange 2003 is involved, you can use the Exmerge tool.

    If Exchange 2007 is involved, you would need to use the MoveMailbox method from the source org to the target org after migrating user accounts.

    This is a weak overview of the mailbox move:

    How to Move a Mailbox Across Forests

    AD and Exchange Consolidation

    Inter-Forest Migration/Consolidation

    Deciding to Consolidate Exchange Messaging Systems

    Server Consolidation Recommendations

    If using the Quest tools (recommended), read this for an idea of what to expect, time per GB, etc
    Thread: QMM throughput question


    This posting is provided "AS-IS" with no warranties or guarantees and confers no rights.

    Please reply back to the newsgroup/forum to benefit from collaboration among responding engineers, as well as to help others benefit from your resolution.

    Ace Fekay, MCT, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSA Messaging
    Microsoft Certified Trainer


    For urgent issues, you may want to contact Microsoft PSS directly. Please check http://support.microsoft.com for regional support phone numbers.
    Ace Fekay [Microsoft Certified Trainer], Jul 8, 2009
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  3. Howdie!
    I second Ace's suggestions. ADMT is the way to go. If there's project
    bugdet left, you might also want to look into the Quest Migration tools
    - they're somewhat easier to use. Nonetheless, ADMT is free and works fine.

    Florian Frommherz [MVP], Jul 9, 2009
  4. Hello tom,

    ADMT as already mentioned will do it. So if you use Exchange please post
    the version you have. For the new domain name i would not choose the same
    name as for external, if you have one.

    Best regards

    Meinolf Weber
    Meinolf Weber [MVP-DS], Jul 9, 2009
  5. I agree with the others on ADMT just make sure to use the latest release
    ADMT v 3.1. Previous versions do not support Windows 2008.

    Paul Bergson
    MVP - Directory Services
    MCTS, MCT, MCSE, MCSA, Security+, BS CSci
    2008, 2003, 2000 (Early Achiever), NT4
    Microsoft's Thrive IT Pro of the Month - June 2009


    Please no e-mails, any questions should be posted in the NewsGroup This
    posting is provided "AS IS" with no warranties, and confers no rights.
    Paul Bergson [MVP-DS], Jul 9, 2009
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