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How to Introduce Server 2008 R2 into a Server 2003 forest

    Question

  • Our company is in the process of upgrading our servers to 2008 R2, however we are unsure of how to go about introducing a 2008 dc into a 2003 parent server.

    How much down time will this cause?

    Once I introduce the 2008 server into the 2003 parent forest, how do I promote the child dc to become the parent?

    Thank you for your help in advance.

     

    Friday, February 25, 2011 8:11 PM

Answers

All replies

  • Hello,

    for starting see:

    http://msmvps.com/blogs/mweber/archive/2010/02/10/upgrading-an-active-directory-domain-from-windows-server-2003-to-windows-server-2008-or-windows-server-2008-r2.aspx

    Your questions:

    Normally no downtime is required, after promoting the new server it will reboot once and that's it. As your clients are already using the existing server they will not realize this. Do not forget to reconfigure the DHCP scopes for the enw DNS server and also the fixed ip addresses used on other machines.

    You are mixing the terms a bit for my understanding of your setup. If i understand you correct you have DOMAIN.COM with actually one domain controller running. Here you will just install an additional DC into an EXISTING domain. If you follow my blog you see how to transfer the FSMO roles, which is the main part to remove the previous DC from the domain with dcpromo. Also the new DC MUST become DNS/GC to fully work.

    Or do you have DOMAIN.COM and also CHILD.DOMAIN.COM with a DC each?


    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
    Friday, February 25, 2011 9:25 PM
  • Meinolf, to answer some of your questions and to give you some more info, We have two domain controllers. One is a parent and the second is a child. I believe that answers your last question above. Really my question is 1) How do we go about introducing 2008 server to the parent and child, which doesn't seem to be difficult. 2) After we have successfully introduced 2008 server how do we promote from child to parent and then delete the former child domain controller.
    Tuesday, March 01, 2011 8:37 PM
  • Hi,

    1) How do we go about introducing 2008 server to the parent and child, which doesn't seem to be difficult.

    For this question, I think you can install an additional DC to each domain (Parent domain and Child domain), accroding to Meinolf's blog above. It's not difficult.

    2) After we have successfully introduced 2008 server how do we promote from child to parent and then delete the former child domain controller.

    You cannot promote a domain controller from child domain to parent domain. I can fully understand if you promote a domain controller from additional domain controller to primary domain controller in the domain. 

    If I take your meaning right, you'd like to migrate objects from child domain to parent domain and demote domain controller which is located in the child domain. If so, you don't have to install an additional domain controller that is running Windows server 2008 to child domain. You can perform a migration from child domain to parent domain instead by using ADMT, after that demote domain controller that is running Windows 2003 server in the child domain.

    ADMT 3.2 released
    http://blogs.technet.com/b/askds/archive/2010/06/19/admt-3-2-released.aspx

    Brent
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Wednesday, March 02, 2011 4:13 AM
  • Meinolf, to answer some of your questions and to give you some more info, We have two domain controllers. One is a parent and the second is a child. I believe that answers your last question above. Really my question is 1) How do we go about introducing 2008 server to the parent and child, which doesn't seem to be difficult. 2) After we have successfully introduced 2008 server how do we promote from child to parent and then delete the former child domain controller.


    Hello,

    so you have 2 DCs in one domain, then use just DC and second DC for example, not ADC what often is used as wrong term also?

    You still didn't answer the part about the used domain model.

    "Or do you have DOMAIN.COM and also CHILD.DOMAIN.COM with a DC each?"


    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
    Wednesday, March 02, 2011 6:08 AM
  • In general, you can use the following procedure to introduce a Windows 2008 server.  Also, please answer Meinolf’s questions to better understand your requirements. 

    1. Upgrade the schema using correct version of OS – Adprep

    a.      http://technet.microsoft.com/en-us/library/dd464018(WS.10).aspx

    b.      http://portal.sivarajan.com/2010/03/windows-2008-r2-adprep.html

    2.      Verify the schema version

    a.      http://portal.sivarajan.com/2010/03/active-directory-schema-version.html

    3.      Install a new Windows 2008 server and join it to the domain.  Perform DC promo and select “additional DC for an existing DC option”

    a.      http://msdn.microsoft.com/en-us/library/ee797379(CS.10).aspx


    Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+ Houston, TX

    Blogs - http://blogs.sivarajan.com/
    Articles - http://www.sivarajan.com/publications.html
    Twitter: @santhosh_sivara - http://twitter.com/santhosh_sivara

    This posting is provided AS IS with no warranties, and confers no rights.
    Thursday, March 03, 2011 11:26 PM
  • Hi,

    I'm wondering if the information is helpful. If there is anything unclear, please feel free to let me know.

    Brent

    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Monday, March 07, 2011 1:54 AM
  • Thanks for your help, all of you. From what you have said and posted it seems straight forward. I just wanted to answer that last question for you.

    "Or do you have DOMAIN.COM and also CHILD.DOMAIN.COM with a DC each?"

    We have one Domain that has a parent and child server. There I believe that answer to your question is we only have a Domain.com and no child.domain.com.

    Tuesday, March 08, 2011 9:47 PM
  • Hi,

    If this is the case, you could refer to Meinolf and Santhosh's suggestions to introduce a Windows server 2008 to existing Windows 2003 server domain.

    Brent
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    Wednesday, March 09, 2011 1:25 AM