Moving from windows Server 2012 Standard R2 to windows Server 2019 Standard

Seema Kanwal Gurmani 321 Reputation points
2021-02-07T03:06:05.007+00:00

Dear Community,

We have five sites:

  1. Site HO
  2. Site NRA
  3. Site JRN
  4. Site CHL

and one Data Center Sites i.e.

  1. Site DC

Our main application like ERP and other applications are all accessed through Site DC from four sites(HO,NRA,JRN & CHL).
Now we want to upgrade our DC from windows Server 2012 to 2019.
What is the recommneded solution?
Should I move all sites to window Server 2019 or just DC.
Also I have fww vms being replicated from site DC to HO. I have hyper-v role installed. What about the domain controller of oher sitres do I have to only move them to 2019 so that my sites can smoothly keep running or should I move the whole sites?
What is the best recommnded method?

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 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
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Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single 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 426.1K Reputation points MVP
    2021-02-07T03:40:30.687+00:00

    Might as well do all the domain controllers. The two prerequisites to introducing the first 2019 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
    https://techcommunity.microsoft.com/t5/Storage-at-Microsoft/Streamlined-Migration-of-FRS-to-DFSR-SYSVOL/ba-p/425405

    I'd use dcdiag / repadmin tools to verify health correcting all errors found before starting any operations. Then stand up the new 2019, 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 Accept as answer if the reply is helpful--

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  1. Mico Mi 1,921 Reputation points
    2021-02-08T07:49:55.84+00:00

    Hi,
    Please check the following doc:
    How to Migrate Active Directory from Windows Server 2012 R2 to 2019

    Thanks for your time!
    Best Regards,
    Mico Mi

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