Changing Primary and Secondary AD Server

Posted on 2011-05-06
Last Modified: 2012-05-11
I currently have one server 2008 machine running Active Directory as my PDC and DNS. I just installed a second server that i would like to make into my new PDC and change the one that it is currently on to my secondary. What is the proper way of doing this so that all information is replicated including DNS.

Question by:jkpc21
    LVL 35

    Accepted Solution

    To do this you will want to install DNS on the new server and then run DCpromo. If you are running active directory integrated DNS then those settings should be replicated automatically to the new server. After the DCpromo has been completed you can then follow the steps to transfer the FSMO roles to your new server.

    After all of the FSMO roles are transferred you can decide wether to have both servers be global catalogs or just one.
    LVL 59

    Expert Comment

    by:Darius Ghassem
    Before transferring roles make sure you run dcdiag to check the health of the DC and domain this will make sure you will not have issues. Is the new Windows 2008 Server R2? Is the hold one R2 or just 2008 Server?

    You might have to update schema depending on if the server is the same version as your current.
    LVL 95

    Assisted Solution

    by:Lee W, MVP
    It's impossible to do.  There is no such thing as a PDC, Primary, or Secondary server in Active Directory.  All the DCs are writable and replicate with each other.  There's a PDC emulator role, but that's just one of 5 roles that could be split amongst multiple servers... so then which would be your "PDC" - NONE!

    If you want the new server to hold all the FSMO roles, you can.  Follow the link xxdcmast posted.  Otherwise, sites should have, in my opinion (unless you're a HUGE company in which case, you'd have people on staff handling this and knowing what to do), two DCs per site, with both DCs being Global Catalogs and DNS servers.  Done.
    LVL 9

    Expert Comment

    pdc and bdc  is for NT4.  from windows 2000 onward there is no more PDC/BDC.

    if you click a additional DC, the AD will be sync automatically. if you want to configure the replication setting, you need to run  active directory site and service on the start menu :
    LVL 3

    Author Closing Comment

    Thanks for the help. Everything is installed and working as it should.

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