renaming a new server to same as original - just by shuting down the original

Posted on 2011-04-19
Last Modified: 2012-08-14
What is this relationship between the hardware and the AD - why cant i just turn a server off and then give a new server the same ip and name - why do i need to remove the original from the domain when the new one has same ip and computer name.?? - how does the AD know this is not the original server then is my question??? - thanks
Question by:philb19
    LVL 7

    Accepted Solution

    Answer to all your queries is "SID". AD identifies account by security identifiers and not their names, names are for us to understand or recognize. You can rename an object but you cannot rename of change the SID of an object, The computer account of the server that you turn off will have a SID associated with it. If you rename new server while the old server account still exists then you will get a message that an account with same name already exists. As the new server will have a different SID you will have to first delete the old account and then rename the server.
    LVL 12

    Expert Comment

    because when a computer joins the domain, it has a computer object with sid, and security trust, that is not depend only on the name or ip, you can simply use netdom command line to manage computer objects in domain,

    my answer assumes that you are not talking about domain contollers servers, that you want AD to treate any server with the same name and IP as the old DC :)

    Expert Comment

    you can easily identify your "sid" details by using "ntdsutil" at the run ,, so identify any of the duplicate sids are there and just delete then i hope it may resolve your problem

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