Removing DC, then re-adding with same name

Discussion in 'Active Directory' started by Whispering Leaf, Jul 1, 2007.

  1. I'm sure this has been covered a million times, but I just want the expert's
    opinion on removing a DC and then adding a NEW one with the SAME name.

    Our plan is as follows:

    Deleting old DC01
    Move the FSMOS (Schema Master and Domain Naming Master) to LONDC01
    Uninstall DNS.
    Uninstall IAS (making sure to copy the config file to a safe place for use
    when re-installing).
    Push replication to the other domain controllers
    Demote DC01 to a member server (using dcpromo)
    Remove the server from the domain.
    Push replication one more time.

    Installing new DC01
    Install Windows 2003, SP1
    Name the server DC01
    Promote the server to a domain controller, making it a Global Catalog.
    Install DNS
    Install IAS, and restore the configuration
    Move the FSMOS back to DC01 from LONDC01
    Push replication.
    Check the site links to be sure they are ok.
    Whispering Leaf, Jul 1, 2007
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  2. Whispering Leaf

    Myweb Guest

    Hello Whispering,

    In principal it sounds ok. You can also leave the roles on the LONDC01, no
    need for moving the roles back. Also think about SP2 instead of SP1. For
    replication status you can use "replmon" from the run line. Also check with
    dcdiag and netdiag after removing the old one and also after adding the new
    one that everything is without any error.

    Best regards

    Disclaimer: This posting is provided "AS IS" with no warranties, and confers
    no rights.
    Myweb, Jul 1, 2007
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  3. Whispering Leaf

    Ryan Hanisco Guest

    Wispering leaf,

    In addition to these things, I would suggest that you thoroughly test your
    domain for problems before you start this. Problems with replication would
    make the middle steps get all complicated on you. It'd be better to resolve
    any issues first.

    Also, you'll want to make sure that DNS replication is complete before you
    add the new domain controller.
    Ryan Hanisco
    MCSE, MCTS: SQL 2005, Project+
    Chicago, IL

    Remember: Marking helpful answers helps everyone find the info they need
    Ryan Hanisco, Jul 2, 2007
  4. Check out an article on my website on decommissioning a dc
    Select articles and click on "Decommission a DC"
    Paul Bergson [MVP-DS], Jul 2, 2007
  5. Thank you all!

    We're going ahead with it and our AD health looks ok etc.
    Whispering Leaf, Jul 2, 2007
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