Migrate Active Directory 2008 R2 to Active Directory 2012 – Part1

In this post, i will start by describing the current Active Directory Domain services 2008 R2 SP1 environment.

The environment composed of :

– One single forest

-A root domain LAB.local

– A tree domain LABX.local

– A child domain of LAB.local named CHILDLAB.LAB.Local

– A two way trust between LAB.local and LABX.local is established

Image

The following picture describes the physical architecture of the lab platform

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So we have:

– 4 domain controllers

– One site

Forest and domain functional level are set to Windows Server 2008 R2

LAB.local

  • LAB-DC-01.lab.local :  (Schema master, Domain naming master, PDC, RID pool manager, Infrastructure master), DNS, Global Catalog
  • LAB-DC-02.lab.local:  Global Catalog, DNS

LABCHILD.local

  • LABCHILD-DC-01.Labchild.lab.local: (PDC, RID pool manager, Infrastructure master), DNS

LABX.local

  • LABX-DC-01.labx.local : (PDC, RID pool manager, Infrastructure master), DNS, GC

After describing the logical and physical architecture of the Windows 2008 R2 ADDS environment, let’s begin!

But before i begin, i need to explain the upgrade/migration process: SIDE BY SIDE UPGRADE

1- Checking the current environnemnt

2- Preparing the environment

3- Making a side by side coexistence of old and new domain controllers

4- Moving services from the old domain controller to the new one : FSMO roles, DNS

5- De-promoting old domain controllers

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2 thoughts on “Migrate Active Directory 2008 R2 to Active Directory 2012 – Part1

  1. Howdy! This post could not be written any better!
    Reading this post reminds me of my good old
    room mate! He always kept talking about this. I will
    forward this article to him. Pretty sure he will have
    a good read. Thanks for sharing!

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