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Domain functional level

Posted on 2007-12-06
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Last Modified: 2010-04-21
Hi,

After i have installe my new Domain with 2 Dc's.When i go to Raise Domain Functional Level.
It shows as Current Domain functional level as "Windows 2000 Mixed mode"
As both my Os is windows 2003.What should i select and why is it in this mode now.

Regards
sharath
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Question by:bsharath
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Expert Comment

by:KCTS
ID: 20418665
This is the default mode - if all your DCs (it does not matter about member servers) are 2003 then raise the domain to Window 2003 native. This will allow you to use nected groups, universal group membership caching and other advanced features not supported by the current mode.
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Expert Comment

by:KCTS
ID: 20418674
... while you are at it, once all domains are raised to the 2003 level its worth raising the forest level as well, see http://technet2.microsoft.com/windowsserver/en/library/83347346-54d4-4963-8a4a-370a127fb3751033.mspx?mfr=true
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Author Comment

by:bsharath
ID: 20419017
KCTS

Thanks for the info...
Can i know a little more on the benifits on changing from Windows mixed mode to windows 2003 mode please
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Accepted Solution

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KCTS earned 2000 total points
ID: 20419221
In summary:

Windows 2000 Mixed
Is the default which supports Windows NT, 2000, and 2003 domain controllers buts certain features such as group nesting, universal groups, and so on are not available.

Windows 2000 Native
Upgrading must only be done if there are no Windows NT domain controllers. By upgrading to Windows 2000 Native functional level, additional features become available including: group nesting, universal groups, SIDHistory, and the ability to convert security groups and distribution groups.

Windows Server 2003 Interim
Used when upgrading from Windows NT to Windows Server 2003. It rovides support for Windows NT and Windows Server 2003 domain controllers but does not provide new features.

Windows Server 2003 Native
Provides support for Windows Server 2003 domain controllers. If you want to take advantage of all the features included with Windows Server 2003 includiing universal group membership caching, more efficient replication and the ability to rename domains/domain controllers.

more detail if you need it at http://technet2.microsoft.com/windowsserver/en/library/da255f53-ae6c-4af8-80f1-9b3c046022311033.mspx?mfr=true

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Author Closing Comment

by:bsharath
ID: 31413107
Thanks a lot KCTS
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