Migrating Domain Controllers From Server 2008 R2 to Server 2012 R2

This topic explains how to upgrading your infrastructure to the latest server 2012 R2 Active Directory Domain Services.

First of all to perform this procedure, you must use a domain account which is member of Domain Admins, Enterprise Admins Groups and  Schema Admins group in the domain. Like as Administrator below:

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We need follow steps below to upgrade your infrastructure to the latest server 2012 R2 Active Directory Domain Services:

  1. Check Forest and Domain Functional Level
  2. Preparing Active Directory Schema
  3. Install Windows Server 2012 R2 server
  4. Join Windows Server 2012 R2  to the Windows Server 2008 R2 Domain
  5. Install an Additional Active Directory Domain Controller With Windows Server 2012 R2
  6. Transferring the Flexible Single Master Operations (FSMO) Role to new installed Active Directory Domain Controller
  7. Configuring external time source on your Primary Domain Controller

 

1.  Check Forest and Domain Functional Level

The Forest Functional level and Domain Functional Level must be at least Windows Server 2003. To check that  Open Active Directory Domain and Trust :

1m2008r2to2012r2ss

Right click on the Active Directory Domains and Trusts and click on Raise Forest Functional Level…

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In our forest functional level is Windows server 2008 R2

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Right click on the Domain name and then click on Raise Domain Functional Level…

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In our Domain functional level is Windows server 2008 R2

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So that is means We can upgrade DC.

2.  Preparing Active Directory Schema You can use Our article :

How to Prepare(Schema Upgrade) the Active Directory Schema for Windows Server 2012 R2

3. Install Windows Server 2012 R2 server You can use Our article :

Install Windows Server 2012 R2 server

4. Join Windows Server 2012 R2 to the Windows Server 2008 R2 Domain You can use Our article :

How To Join Windows Server 2012 R2 to a Domain

5. Install an Additional Active Directory Domain Controller With Windows Server 2012 R2 You can use Our article :

Install an Additional Active Directory Domain Controller With Windows Server 2012 R2

6. Transferring the Flexible Single Master Operations (FSMO) Role to new installed Active Directory Domain Controller You can use Our article :

Transferring the Flexible Single Master Operations (FSMO) Role to new installed Active Directory Domain Controller

7. Configuring external time source on your Primary Domain Controller You can use Our article :

Configuring external time source on your Primary Domain Controller

 

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