Hi @shankar1285,
he blog article titled "Step-by-Step Guide: Active Directory Migration from Windows Server 2008 R2 to Windows Server 2022" by Dishan Francis provides a detailed guide on migrating Active Directory from Windows Server 2008 R2 to Windows Server 2022. Here's a summary of the key steps and information provided in the article:
Background:
- The article highlights the importance of migrating from end-of-life operating systems, such as Windows Server 2008 R2, due to compliance, security, and support reasons.
New Features in Active Directory:
- It mentions that Windows Server 2022 doesn't introduce new forest or domain functional levels beyond Windows Server 2016.
Active Directory Migration Checklist:
- Evaluate business requirements.
- Audit the existing Active Directory infrastructure.
- Create an implementation plan.
- Prepare the new domain controller.
- Install Windows Server 2022 and patch it.
- Assign a dedicated IP address to the new domain controller.
- Install the AD DS role.
- Migrate applications and server roles from existing domain controllers.
- Migrate the FSMO roles to the new domain controller.
- Add new domain controllers to monitoring and DR solutions.
- Decommission old domain controllers.
- Raise domain and forest functional levels.
- Perform ongoing maintenance.
Common Questions About Active Directory Migrations:
- Answers common questions about IP address changes, downgrading functional levels, DNS role migration, SYSVOL replication, and the need to decommission old domain controllers.
Design Topology:
- Illustrates the domain controller setup before and after migration, emphasizing the introduction of a Windows Server 2022 domain controller.
Preparing the New Windows Server 2022 Domain Controller:
- Guides the process of preparing the new server, including joining it to the existing domain and verifying SYSVOL replication.
Adding the New Windows Server 2022 Domain Controller:
- Explains how to add the new server as an additional domain controller using PowerShell, ensuring DNS integration.
FSMO Role Migration:
- Details the migration of FSMO roles from the old Windows Server 2008 R2 domain controller to the new Windows Server 2022 domain controller using PowerShell commands.
Decommissioning the Old Domain Controller:
- Outlines the steps to decommission the old Windows Server 2008 R2 domain controller using the dcpromo wizard.
Raising Domain and Forest Functional Levels:
- Provides PowerShell commands to raise the domain and forest functional levels to Windows Server 2016 or later after decommissioning the old domain controller.
Verification:
- Suggests commands to verify the success of the migration, including checking domain and forest functional levels, FSMO roles, and the list of domain controllers.
The article concludes by emphasizing that the same steps can be applied when migrating from Windows Server 2012, 2012 R2, 2016, or 2019 to Windows Server 2022.
How to migrate Active Directory from Windows Server 2008 R2 to Windows Server 2022 (microsoft.com)
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Kindest regards,
Leon Pavesic
(LinkedIn)
