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FSMO Role size RRS feed

  • Question

  • i want to rebuild my Domain Controller
    steps
    1. Transfer Role on ADC
    2. Format Dc and extend c partitions
    3. Make again Domain Controller and re-assign Roles

    My question is that it is necessary to size the role on ADC. (as i clearly mention Dc will format and rebuilt)

    Monday, July 6, 2009 8:46 AM

Answers

  • I'm honestly not sure what you mean by "size the role".  But what you describe as far as the process is pretty accurate:
    1. Move the roles to another (or other) DC(s). 
    2. Re-build the original machine
    3. dcpromo as a new DC in the existing domain
    4. Move the roles back.

    I "binged" on "move FSMO Roles" - http://www.bing.com/search?q=move+FSMO+Roles&mkt=en-us&FORM=IE8SRC

    That said - this is really not the forum you should use for these kinds of questions.  This forum is for IT Managers.  There is a Windows Server Directory Services forum that will help you with this kind of question.
    http://social.technet.microsoft.com/Forums/en-US/winserverDS/threads




    Kevin Remde US IT Evangelism - Microsoft Corporation http://blogs.technet.com/kevinremde
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Monday, July 6, 2009 1:46 PM
  • Hello,

    you can remove a DC according to:
    http://technet.microsoft.com/en-us/library/cc755937(WS.10).aspx

    Before decommisioning the DC check also replication with "repadmin /showrepl" from the command line.

    Make sure the other DC is also DNS server and your clients are configured to use it as preferred DNS before removing the old one.

    Seizing FSMO roles is not needed when demoting is succesful. Normally you seize FSMO roles when a DC with FSMO roles crashes and you can't transfer the roles to another DC. So in your case this is not needed.

    Also i suggest the next time you use this forum, which is especially for AD questions:
    http://social.technet.microsoft.com/Forums/en/winserverDS/threads?lc=1033&prof=required&page=1
    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Friday, July 10, 2009 8:32 AM
  • hi,

    not directly format the dc. you must use dcpromo command to decommisioning your root dc. and during this action all the fsmo roles will be transferred to your ADC.

    "size the role" that must mean seize, it is right? you dont need to seize fsmo roles.

    after decommisioning root dc then re install your OS and configure your server as a dc and then you can transfer roles to your new dc.

    regards,


    Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Sunday, July 12, 2009 4:25 AM
  • Ah.. yeah, if he means "seize" the role, then the question makes more sense. :)

    You only need to seize a role if your original role holder is no longer available.  The preferred method is to take the role while the original role-holder is still active.  But if that is not available, then seizing the role is required.

    See this KB article on how to use the NTDSUTIL.EXE to seize FSMO roles:  http://support.microsoft.com/default.aspx/kb/255504

    But in the scenario listed in the original question, that shouldn't be necessary.

    Kevin Remde US IT Evangelism - Microsoft Corporation http://blogs.technet.com/kevinremde
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Sunday, July 12, 2009 3:53 PM

All replies

  • I'm honestly not sure what you mean by "size the role".  But what you describe as far as the process is pretty accurate:
    1. Move the roles to another (or other) DC(s). 
    2. Re-build the original machine
    3. dcpromo as a new DC in the existing domain
    4. Move the roles back.

    I "binged" on "move FSMO Roles" - http://www.bing.com/search?q=move+FSMO+Roles&mkt=en-us&FORM=IE8SRC

    That said - this is really not the forum you should use for these kinds of questions.  This forum is for IT Managers.  There is a Windows Server Directory Services forum that will help you with this kind of question.
    http://social.technet.microsoft.com/Forums/en-US/winserverDS/threads




    Kevin Remde US IT Evangelism - Microsoft Corporation http://blogs.technet.com/kevinremde
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Monday, July 6, 2009 1:46 PM
  • I dont know that there is a way to size a role other than in a planning kind of state, but these arent related to FSMO roles, they pretty much handle themselves.

    Services like DNS might take more disk space than you might think, but if the DC is running the FSMO roles (all or some) now it should handle them after a rebuild.

    Can you elaborate more on what you mean by sizing the roles?

    Derek Schauland, MCSE | Microsoft MVP - File System Storage | Technology Addict
    Thursday, July 9, 2009 1:50 PM
  • Hello,

    you can remove a DC according to:
    http://technet.microsoft.com/en-us/library/cc755937(WS.10).aspx

    Before decommisioning the DC check also replication with "repadmin /showrepl" from the command line.

    Make sure the other DC is also DNS server and your clients are configured to use it as preferred DNS before removing the old one.

    Seizing FSMO roles is not needed when demoting is succesful. Normally you seize FSMO roles when a DC with FSMO roles crashes and you can't transfer the roles to another DC. So in your case this is not needed.

    Also i suggest the next time you use this forum, which is especially for AD questions:
    http://social.technet.microsoft.com/Forums/en/winserverDS/threads?lc=1033&prof=required&page=1
    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Friday, July 10, 2009 8:32 AM
  • hi,

    not directly format the dc. you must use dcpromo command to decommisioning your root dc. and during this action all the fsmo roles will be transferred to your ADC.

    "size the role" that must mean seize, it is right? you dont need to seize fsmo roles.

    after decommisioning root dc then re install your OS and configure your server as a dc and then you can transfer roles to your new dc.

    regards,


    Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Sunday, July 12, 2009 4:25 AM
  • Ah.. yeah, if he means "seize" the role, then the question makes more sense. :)

    You only need to seize a role if your original role holder is no longer available.  The preferred method is to take the role while the original role-holder is still active.  But if that is not available, then seizing the role is required.

    See this KB article on how to use the NTDSUTIL.EXE to seize FSMO roles:  http://support.microsoft.com/default.aspx/kb/255504

    But in the scenario listed in the original question, that shouldn't be necessary.

    Kevin Remde US IT Evangelism - Microsoft Corporation http://blogs.technet.com/kevinremde
    • Marked as answer by Kevin Remde Sunday, May 23, 2010 1:29 PM
    Sunday, July 12, 2009 3:53 PM