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Prerequisites for AD Migration from Windows 2003 to 2012 R2

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Prerequisites for AD Migration from Windows 2003 to 2012 R2

Postby blin » Tue Jun 14, 2016 5:24 pm

Active Directory Migration from Windows Server 2003 to Windows Server 2012 R2
Prerequisites
1. Check to ensure the Domain Functional Level is currently setup to at least Windows 2003 mode. This is the lowest required Domain Functional Level that would allow a Windows Server 2012 Domain Controller installation. Windows NT / 2000 Domain Controllers are not supported via this process.

Check the domain and forest functional levels in Active Directory Domains and Trusts. Select Raise Domain Functional Level and review the Current domain functional level reported if it is Windows Server 2000.

Note: The Domain Functional Level does not need to be raised if the Current domain functional level is reporting Windows Server 2003.
2. Before we do anything we first want to make sure your domain is healthy. You can easily do this by running the utility dcdiag which can perform a full diagnostic and report any issues it finds.
3. Prepare your Domain for your new Server 2012 R2 Domain Controllers. You will want to run adprep so your domain schema can handle your new Server 2012 R2 Domain Controllers. The command adprep is located on your Server 2012 disk under the \support\adprep directory. You will want to run the command adprep /forestprep from one of your Server 2003 Domain Controllers.
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blin
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