Additional domain controller


  • Hi, i am having domain controller win 2008 r2 std sp1 and can we add additional domain controller which has operating system win 2008 std sp2.

    Please guide.

    Thursday, December 22, 2016 10:21 AM

All replies

  • Hi,

    the only boundary for domain controller OS is domain functional level.
    Functional levels determine the available Active Directory Domain Services (AD DS) domain or forest capabilities. They also determine which Windows Server operating systems you can run on domain controllers in the domain or forest.  
    You can check supported OS version for your domain functional level here:
    Understanding Active Directory Domain Services (AD DS) Functional Levels

    You can check domain level with following pshell commands:
    import-module activedirectory
    Get-ADDomain -Server YOURDOMAINNAME | select domainmode

    Thursday, December 22, 2016 10:39 AM
  • Hi,

    To install domain controller Under Windows 2008 SP2, the forest and domain functionel level must be lower than 2008.

    If the domain and forest functioinel level is 2008R2 or higher:

    • If the recycle bin is enabled , you can't install a domain controller Under Windows 2008 SP2
    • If the recycle bin is disabled, you have to downgrade the functionnel level usining powershell command: to be able to install DC Under Windows 2008 SP2

    Set-ADForestMode -Identity "forsetname" -ForestMode Windows 2008Forest 
    Set-ADDomainMode -Identity "domainname" -domainMode Windows 2008domain 

    Thursday, December 22, 2016 12:24 PM