We plan to replace our Win 2000 DC. When I say replace I refere to both, hardware and OS which will be Win 2003 R2 Standard Edition. The steps we want to follow are:
-run R2 ADPREP on the 2000 DC from the 2nd disc of the R2 CD (Cmpnentsr2adprep)
-DCPROMO new server as a domain controller.
-Wait for the AD stuff to replicate. Move the FSMO roles to the new w2003 box.
-Demote the old server.
The question is: “Is this going to have any impact on my 2003 Exchange Server(runs on different machine than DC and OS is w2003 R2)?”. Do I have to rerun the adprep /forestprep and adprep /domainprep on the new DC for the Exchange Server?.
Sounds like a good plan, but some points that need to be addressed:
1) Make the new DC a GC
2) Install DNS on the new DC
3) Make sure Exchange (and actually all the clients and member servers) is pointing to the new DC as it’s primary DNS
After you are done with all that, turn the old DC without demoting it – if there is something you missed you can always turn the old DC back and complete the missing steps. Demoting the old DC should be done only after you are 100% sure that your environment is working properly.