2003 SP2 Make sure the server upgrading is the Master
    go to AD User and Computers
       Raise Domain Function to 2003
    go to AD Domains and Trusts
       RAISE Forest Level


Windows 2012 R2 (Make sure has Static Address xxx.xxx.xxx.xxx Point DNS to other DC's only
    Server Manager / Manage
    Add Roles and Features
    Add DNS and Active Directory Services
    Install
    Go to Server Manager Flag and Promote to Domain Controller
        Select add a domain controller to existing / Select Domain / Set Credentials
        Ignore could not find domain and Enter DSRM Password for Default-First-Site
            Make sure GC is selected too!
    Replicate from any domain controller
    Copy script? and next everything
    It will start upgrade forest and domain once completed it will need to reboot.

On the 2003 server(s) Change ALternate DNS Server to new 2012 server
    Go to Sites and services refresh and should see the new domain controller. (NTDS Setting empty)

On 2012 login as domain Admin
    Add windows 2003 server IP to alternate DNS (CURRENT MASTER DC)
    Change Prefered DNS to current 2012 IP
    Go to DNS Manager and add Reverse Lookup zone. New Primary/Domain (defaults)
    Powershell = netdom [ENTER]  netdom query fsmo Should show the current Domain masters
    Go to AD Sites and Services - go to 2003DC/NTDS select "replicate TO and then FROM selected DC"
    RESTART 2012 server
    Login as domain admin - type at RUN regsvr32 schmmgmt.dll
    Verify on 2003 AD Sites and services that 2003 server has connection to 2012 NTDS
    Open AD Users and Computers on 2012 RC on domain Operation Master / change all to 2012
    Check: Powershell = netdom [ENTER]  netdom query fsmo Should show the current Domain masters
    Go to AD Domains and Trusts RC on root select operation master (change to 2012 server)
    RUN mmc add Directory Schema - rc on AD Schema and select Change AD Domain Controller
        Select 2012 server Change from 2003 to 2012
        Replicate on Schema.
    Check: Powershell = netdom [ENTER]  netdom query fsmo Should show the current Domain masters
        netdom query DC to check domain controllers.

2003 DCPROMO to demote 2003 servers
*DELETE from AD Sites and Services when complete.
Rmove old AD Server from DNS. Uninstall DNS from old server. Set up new DHCP on New Server.
CHANGE DNS on DHCP

Article ID: 128, Created On: 5/31/2017, Modified: 5/31/2017

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