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How to change parent to child domain?

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  • How to change parent to child domain?

    Hey all,
    I started a new job and the IT in the place i got is kind of terrible.

    I have 5 domains which are all parent domains.
    I want one of them to be the Parent and all others to be child domains.
    What will be the impacts of this move? and how to do it?

    I am going to install a few domains on VM and see how this is going to transfer.
    What do you suggest to check before proceeding with this move?

    All servers has "Trust" to one domain.
    Example:

    Domain: p.com
    Trust: all domains

    Domain: a.com
    Trust: p.com

    Domain: e.com
    Trust: p.com

    and so on.

    on some of the servers there is exchange 2003 installed (should be upgraded to 2007 soon) I am saying it because maybe it effects something in the move.

    Thanks i advanced for your help

  • #2
    Re: How to change parent to child domain?

    Hi,

    You cannot change parent - parent to parent - child. You need to create a new child domain and then migrate from one parent to child and then decomission that parent domain.

    But why you want to change the design, what is the purpose behind it?
    Thanks & Regards
    v-2nas

    MCTS 2008, MCTIP, MCSE 2003, MCSA+Messaging E2K3, MCP, E2K7
    Sr. Wintel Eng. (Investment Bank)
    Independent IT Consultant and Architect
    Blog: http://www.exchadtech.blogspot.com

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    • #3
      Re: How to change parent to child domain?

      The main reason is centralize all
      right now we have 5 Domains, 5 Administrators, 5 Administrators Passwords, 4 Exchange Servers, and allot of mess in the AD's.

      All 5 Domains are 2003 and i want to upgrade to 2008
      2 exchange servers are 2003 and 2 are 2007 and i want to get 2010.
      All network is subneted in the most terrible way where one segment cant get to the other segment and there is no management segment so i am the administrator but have to be on one segment at a time.

      Do you recommend to stay in the existing topology of the servers?

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      • #4
        Re: How to change parent to child domain?

        Hi,

        Can you draw up your AD/DNS with Replication, also include if these are in different geographical locations and Exchange diagram? Then i can recommend how to manage all what you have.
        Thanks & Regards
        v-2nas

        MCTS 2008, MCTIP, MCSE 2003, MCSA+Messaging E2K3, MCP, E2K7
        Sr. Wintel Eng. (Investment Bank)
        Independent IT Consultant and Architect
        Blog: http://www.exchadtech.blogspot.com

        Show your appreciation for my help by giving reputation points

        Comment


        • #5
          Re: How to change parent to child domain?

          What's Replication? Got a link?
          ** Remember to give credit where credit is due and leave reputation points where appropriate **

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          • #6
            Re: How to change parent to child domain?

            Given the scope of your environment, and the complexity of the task, I would seriously consider a good consultant planning and implementing the change, rather than relying on the advice (however good it is) of unknown forum members.

            As you are planning an Exchange migration as well, you will have a lot of work, and a completely new AD may be an option for you.

            But if you want advice:
            Create new child domains
            Use ADMT to move objects
            Decommission old domains / DCs

            (Not knowing more about your infrastructure, cannot give details beyond that)
            Tom Jones
            MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
            PhD, MSc, FIAP, MIITT
            IT Trainer / Consultant
            Ossian Ltd
            Scotland

            ** Remember to give credit where credit is due and leave reputation points where appropriate **

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            • #7
              Re: How to change parent to child domain?

              Yes, I agree with Ossian, if you really really want to consolidate You need a consultant to plan it for you.
              Thanks & Regards
              v-2nas

              MCTS 2008, MCTIP, MCSE 2003, MCSA+Messaging E2K3, MCP, E2K7
              Sr. Wintel Eng. (Investment Bank)
              Independent IT Consultant and Architect
              Blog: http://www.exchadtech.blogspot.com

              Show your appreciation for my help by giving reputation points

              Comment

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