Make a 2012 server a domain conmtroller in 2003 domain
I want to make a 2012 member server a domain controller.
Current set up is two Server 2003 domain controllers. One of them is having issues so I want to demote it and promote a 2012 member server to a domain controller. Can this be done if the FSMO domain controller is running Server 2003?
Thanks,
cja
Current set up is two Server 2003 domain controllers. One of them is having issues so I want to demote it and promote a 2012 member server to a domain controller. Can this be done if the FSMO domain controller is running Server 2003?
Thanks,
cja
SOLUTION
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ASKER CERTIFIED SOLUTION
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J0rtIT
Tom the step 1 is incorrect, you don't need the server 2012 to be part of the domain since that's what you're doing when you promote it to a domain controller.
Yes, this can be done
ASKER
The domain and forest levels are currently version 2000. Should I raise the domain and forest functional levels to native 2003 before I promo the 2012 server to a domain controller?
When I move the FSMO roles to the 2012 domain controller will the 2003 domain controller become a back up domain controller?
I don't want to have just one DC and I'm not sure the old DC's, which are Dell PE 2950's can run Server 2012, so I may have to keep one of them running Server 2003 until we purchase a new server to replace them.
Thanks,
cja
When I move the FSMO roles to the 2012 domain controller will the 2003 domain controller become a back up domain controller?
I don't want to have just one DC and I'm not sure the old DC's, which are Dell PE 2950's can run Server 2012, so I may have to keep one of them running Server 2003 until we purchase a new server to replace them.
Thanks,
cja
SOLUTION
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ASKER
Will I be able to make the 2012 server a domain controller if domain functionality level is set to version 2000?
No, you must first rise functionality level to 2003
https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/upgrade-domain-controllers-to-windows-server-2012-r2-and-windows-server-2012#BKMK_UpgradeWorkflow
Install or use domain controllers that run Windows Server 2003 or later (Windows 2000DC is not supported and must be demoted prior installation).
Raise the forest functional level to Windows Server 2003 or higher.
Install domain controllers that run Windows Server 2012.
Remove or upgrade domain controllers that run earlier versions of Windows Server.
When you will promote W2012 as DC wizard will ask you automatically to rise Domain functional Level
Windows Server 2003
Supported Domain Controller Operating System:
Windows Server 2012 R2
Windows Server 2012
Windows Server 2008 R2
Windows Server 2008
Windows Server 2003
The Windows Server 2003 domain functional level is deprecated. When you create a new domain on a server that runs Windows Server 2012 R2, the domain functional level must be Windows Server 2008 or newer. For more details about supported domain functional levels in Windows Server 2012 R2, see Understanding Active Directory Domain Services (AD DS) Functional Levels and Upgrade Domain Controllers to Windows Server 2012 R2 and Windows Server 2012.
https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/upgrade-domain-controllers-to-windows-server-2012-r2-and-windows-server-2012#BKMK_UpgradeWorkflow
Install or use domain controllers that run Windows Server 2003 or later (Windows 2000DC is not supported and must be demoted prior installation).
Raise the forest functional level to Windows Server 2003 or higher.
Install domain controllers that run Windows Server 2012.
Remove or upgrade domain controllers that run earlier versions of Windows Server.
When you will promote W2012 as DC wizard will ask you automatically to rise Domain functional Level
Windows Server 2003
Supported Domain Controller Operating System:
Windows Server 2012 R2
Windows Server 2012
Windows Server 2008 R2
Windows Server 2008
Windows Server 2003
The Windows Server 2003 domain functional level is deprecated. When you create a new domain on a server that runs Windows Server 2012 R2, the domain functional level must be Windows Server 2008 or newer. For more details about supported domain functional levels in Windows Server 2012 R2, see Understanding Active Directory Domain Services (AD DS) Functional Levels and Upgrade Domain Controllers to Windows Server 2012 R2 and Windows Server 2012.
Nope must be 2003 as my answer says
ASKER
Thanks