Promoting DC to Global Catalog Server

Prashant's Scribble!

When we are working with Active Directory sometimes we are told to promote  Domain Controller to Global Catalog (GC) server.

We all know how to promote DC to GC. Detailed procedure is given here.

If the Active directory database size is large then it will take many hours to replicate all the partitions to the newly designated Global Catalog server. For a database of around 13 GB it will take around 8-9 hrs to mark the server as Global Catalog Server. But big question is how do you know that replication is in progress and everything is running fine as per your plan? Short answer – Keep checking the size of NTDS.DIT file every 15 minutes or so which should keep increasing and finally completing the replication process.

Also you can keep checking Directory Service event log in event viewer. It will display couple of events with event ids…

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