AD services are running on Windows Server 2008 R2. AD services in all sites were migrated from Window Server 2003, so in all AD Servers, the actual name of the SYSVOL shared folder is SYSVOL_DFSR and Netlogon is shared on using the same folder. NTDS DB is present in NTDS folder. In the child domain that has 2 sites, one site is newly created
Domain controllers are incorrectly listed as offline in Apr 09, 2020 Designing the Site Topology | Microsoft® Docs A directory service site topology is a logical representation of your physical network. Designing a site topology for Active Directory Domain Services (AD DS) involves planning for domain controller placement and designing sites, subnets, site links, and site link bridges to ensure efficient routing of query and replication traffic. Demoted DCs Still in Sites and Services Solutions Sites and services still shows the demoted DC's. AD has had two days to replicate. After the demotion, I ran through DNS and cleaned out all the entries for old DC's. There were only a few. My thought is to delete the demoted/ghost site servers (only one is listed in each site) and replace them with 2008R2 servers from the main sites.
With Windows Server 2008, administrators have the ability to explicitly restart the Active Directory services. Rick Vanover showcases this functionality in this Windows Server tip.
Beyond the MCSE: Active Directory for the Security
Add the Active Directory Domain Services role. Adding the Active Directory Domain Services role installs the framework for Windows Server 2008 to become a DC and run AD DS. It does not promote the server to a DC or install AD DS. In the Server Manager window, select the Roles directory. In the Roles Summary section, click Add Roles.
Designing the Site Topology | Microsoft® Docs