Dear Sir,
It has a Windows 2008 R2 Server environment with Root domain in Site 1 and Child domain in Site 2:
Existing Topology:
1. Site1 Location: AD forest with 2 x DC Windows 2008R R2 Active directory - Root domain
2. Site2 Location: Same AD forest with 2 x DC Windows 2008R2 Active directory - Child domain
I am planning:
Step1. Install new Windows 2019 AD server x4 with
- 2 servers will join into existing Site 1 root domain.,
- 2 Servers will join into existing Site 2 child domain.
Step2: DCPromotion of Site 1 & Site 2 Windows 2019 servers x4 to domain controller, then transfer operation master
Step3: Demotion of Site 1 Windows 2008R2 domain controller
Step4: Demotion of Site 2 Windows 2008R2 domain controller
Step5: Upgrade functional and forest level of AD to Windows 2016 / 2019 active directory
I try to search this migration procedures but no official information to support whether it is a possible solution design.
Anyone comment on the step and design whether it is workable?
Regards,
Joe Tam