How to migrate 3x of windows 2012r2 AD vm to 3x windows 2019 AD vm

Vince ng 40 Reputation points
2023-07-21T22:14:09.61+00:00

May I know what are the prequiste and step by step to migrate my existing 3vm of window 2012r2 AD into 3vm of windows 2019AD? And the step of rollback if the upgrade failed?

thank you in advance

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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Windows Server Migration
Windows Server Migration
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Migration: The process of making existing applications and data work on a different computer or operating system.
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  1. Dave Patrick 426.4K Reputation points MVP
    2023-07-22T12:39:32.3466667+00:00

    The two prerequisites to introducing the first 2019 or 2022 domain controller are that domain functional level needs to be 2008 or higher and older sysvol FRS replication needs to have been migrated to DFSR

    I'd use dcdiag / repadmin tools to verify health correcting all errors found before starting any operations. Then stand up the new 2019 or 2022, patch it fully, license it, join existing domain, add active directory domain services, promote it also making it a GC (recommended), transfer FSMO roles over (optional), transfer pdc emulator role (optional), use dcdiag / repadmin tools to again verify health, when all is good you can decommission / demote old one.

    --please don't forget to upvote and Accept as answer if the reply is helpful--