I am new to AD. We have a total of three domain controllers that are also DNS servers. Can I decommission the DC running Windows Server 2003 standard. Will the global catalog be replicated safely?
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4Before doing anything, verify that you've selected at least one other server (preferrably more) to be a GC, then examine AD event logs to verify that replication completed successfully.– EEAADec 23, 2014 at 17:35
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support.microsoft.com/kb/313994 article on creating a global catalog server, for anyone who needs some guidance.– sfsdf3444Dec 29, 2014 at 9:45
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1 Answer
- Run dcdiag and check replication to ensure that your AD is healthy
- Safely migrate all FSMO roles to other servers
- Ensure that at least one other DC is also a GC
- Run dcdiag and check replication to ensure that your AD is healthy again
Assuming you don't have any other applications on the DC, particularly non-AD-integrated DNS, you should be good to dcpromo that down.