Last week I was assigned to a Windows AD fix & fine tune project. Basically this project is divided into 2 phases, where after I fix their current AD environment(WIndows Server 2000), I will implement 2 new domain controllers which is running Windows Server 2003 R2.
On the first day of the project,I found out that it has a total of 5 DCs in their current environment where 2 are production DCs, the rest are all failed DCs that did not decommissioned properly.
Immediately I know this is the root cause of the problem. Since the 3 failed DCs were shut down for quite some time, I proceed to remove and decommission them by using NTDSUTIL command.
Once the 3 failed DCs has been removed, the result shows that there is no more problem by running REPADMIN /SHOWREPL ,DCDIAG and NETDIAG.
Upon completion of phase 1, I proceed to implement 2 new DCs, transfer FSMO roles to the 2 new DCs as well as configured them as Global Catalog server.
Lastly I demote the 2 Windiws 2000 DCs by running DCPROMO, and the servers are demoted with gracefully without any problems.
System Engineer,Gadget Lover,Microsoft Technologies Enthusiast.
