Migration of Windows 2003 domain controller to Windows 2008 R2

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• Friday, February 08, 2013 12:48 AM

   

   
  

  0

  Review the following wiki article and let us know if you have any questions:

  http://social.technet.microsoft.com/wiki/contents/articles/2903.active-directory-active-directory-upgrade-high-level-steps.aspx

  ---

  Santhosh Sivarajan | Houston, TX
  
  Windows 2012 Book - Migrating from 2008 to Windows Server 2012
  
  http://www.sivarajan.com/
  
  This post is provided ASIS with no warran

  • Proposed As Answer by i.biswajith Sunday, February 10, 2013 2:34 PM
  • Marked As Answer by K_evin ZhuMicrosoft Contingent Staff, Moderator Thursday, February 28, 2013 2:29 AM
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• Sunday, February 10, 2013 2:40 PM

   

   
  

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  In addition,

   >   Using the copied folder on each DC run the following commands in the order specified in the following table.  Use adprep32 since the OS on the DC is assumed to be 32bit.

  Command	Permission	Domain Controller	Runtime
  adprep /forestprep	Schema and Enterprise Admin	Schema Master	3-5 mins
  adprep /rodcprep	Schema and Enterprise Admin	Domain Naming Master	Seconds
  adprep /domainprep /gpprep	Domain Admin	Infrastructure Master	Seconds

  >       Check the following log file on each DC to verify there were no errors.

  %SystemRoot%\Debug\adprep\logs\yyyymmddhhmmss\adprep.log

  >      If you run adprep multiple times on a DC then a new log is created for      each run.

  in details http://networkadminkb.com/KB/a15/transitioning-a-windows-2003-domain-to-windows-2008-r2.aspx

  Configuring the Windows Time Service for Windows Server

  http://msmvps.com/blogs/acefekay/archive/2009/09/18/configuring-the-windows-time-service-for-windows-server.aspx

  ---

  Regards
  Biswajit Biswas
  My Blogs|MCC |TNWiki Ninja

  Best regards Biswajit Biswas Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. MCP 2003,MCSA 2003, MCSA:M 2003, CCNA, MCTS, Enterprise Admin

  
  
  

  • Edited by i.biswajith Sunday, February 10, 2013 2:41 PM
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• Wednesday, February 20, 2013 11:22 PM

   

   
  

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  Hello Biswajit,

  the OP already has a Windows server 2008 R2 DC "two domain controllers one is running on win 2003 and other on win server 2008 R2".

  So adprep commands are not required anymore.

  Hello Imtiyaz,

  in your case just add the new server to the domain, run dcpromo on it, assure to check GC and DNS during promotion and after replication has occurred start demoting the old OS DC.

  Demoting the old DC

  - transfer the FSMO roles from the old DC to another one, either all on one or divided, doesn't really matter

  - reconfigure your clients/servers that they not longer point to the old
  DC/DNS server on the NIC

  - to be sure that everything runs fine, disconnect the old DC from the
  network and check with clients and servers the connectivity, logon and also with
  one client a restart to see that everything is ok

  - then run dcpromo to demote the old DC, if it works fine the machine will
  move from the DC's OU to the computers container, where you can delete it by
  hand. Can be that you got an error during demoting at the beginning, then
  uncheck the Global catalog on that DC and try again

  - check the DNS management console, that all entries from the machine are
  disappeared or delete them by hand if the machine is off the network for ever

  - also you have to start AD sites and services and delete the old servername
  under the site, this will not be done during demotion

  ---

  Best regards

  Meinolf Weber
  MVP, MCP, MCTS
  Microsoft MVP - Directory Services
  My Blog: http://msmvps.com/blogs/mweber/

  Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.

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