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Samuel_Caunt's avatar
Samuel_Caunt
Copper Contributor
Oct 22, 2021
Solved

Upgrading 2012 R2 to 2019 Domain Controller / DFRS / DNS / DHCP

Hi All, Looking for some advice been a while since I have had to do an upgrade of the domain controllers but I just want to get people advice on the plan I have put in place to do this:   Current s...
Active Directory
DHCP
DNS
Upgrade Process
  • Dave Patrick's avatar
    Dave Patrick
    Oct 25, 2021

    DNS is integrated within active directory. DHCP is a separate role. You could accept this one as best response and start a new thread about DHCP server installation / migration.

     

     

Dave Patrick's avatar
Dave Patrick
MVP
Oct 23, 2021

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 move on to next one.

 

 

 

 

 

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