We're replacing a DC which is also our File and Print server aka dc01. The DC has the following roles:
Domain Controller w/DNS and DHCP management roles
All FISMO roles Except Infrastructure Master Role see below
Global Catalog Server
Backup Exec Server
File and print services
During our original upgrade to Windows 2003, we configured a workstation as our original DC (DC0), migrated user accounts from NT, than rebuilt the original server as a DC(this happens to be the server we're retiring aka DC01). All FISMO roles were on our workstation (DC0) but were eventually moved to dc01-all but IMR.
I was warned that the infrastructure master role should not be assigned to a DC hosting the global catalog. If the infrastructure master and global catalog are on the same domain controller, the infrastructure master will never find data that is out of date, so it will never replicate changes. I’m not sure if it needs to replicate changes while acting in a solo DC configuration but that leads to another discussion. Because the Infrastructure Master Role resides on the workstation server, I've been unable (nervous is more like it) to remove the workstation from AD.
I have several questions based on our scenario.
1. Can I migrate all FISMO Roles to a server that is also the Global Catalog Server allowing me to retire both dc0 and dc01?
2.Once I configure our new server (FS01) as a DC, how do I migrate DNS and DHCP management roles to FS01? In other words, if I run DCPROMO, configure FS01 as a DC change the DNS IP address to point to FS01, what happens when both dc01 & fs01 DNS servers are online-how do I properly migrate those roles to the new server?
3. Since the GPO's are configured for specific OU's, what will happen to the GPO's? Should I be concerned with GPO's at all?
Thanks to all. If you have any additional things to look out for, please let me know. I just started a new position and I'm trying to plan this project as accurately as possible.