I am int the process of moving a DHCP server running on Windows 2003 SP2 domain controller (FSMO-PDC) to a Windows 2008 R2 SP1 domain controller. I've read some documentation somewhere that DHCP on Windows 2008 R2 would need to be installed on a server with PDC role as well. Obviously, I simply couldn't remember where I had read that info, so I hope that someone will be able to shed some lights on this. In another words, does it really matter which 2008 R2 server FSMO role that DHCP runs on? Greatly appreciate your input. -Hieu

I am in the process of moving a DHCP server running on Windows 2003 SP2 domain controller (FSMO-PDC) to a Windows 2008 R2 SP1 domain controller. I've read some documentation somewhere that DHCP on Windows 2008 R2 would need to be installed on a server with PDC role as well. Obviously, I simply couldn't remember where I had read that info, so I hope that someone will be able to shed some lights on this. In another words, does it really matter which 2008 R2 server FSMO role that DHCP runs on? Greatly appreciate your input-Hieu

I have never heard of any dependency with regard to the scenario of when you choose to install DHCP on a DC, it must be holding the PDC emulator role. What if you wanted to deploy two DHCP servers on DCs to implement a 50/50 scope option? Maybe someone else can shed some light to this, but I again, I am unaware of any concerns here with regard to FSMO roles. EDIT:: Hieu, try to only post in one category... This is a duplicate post of: http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/a964a28b-b9e9-427e-85ae-7df6fc9e27cd Visit: anITKB.com, an IT Knowledge Base.

I have never heard of any dependency with regard to the scenario of when you choose to install DHCP on a DC, it must be holding the PDC emulator role. What if you wanted to deploy two DHCP servers on DCs to implement a 50/50 scope option? Maybe someone else can shed some light to this, but I again, I am unaware of any concerns here with regard to FSMO roles. Visit: anITKB.com, an IT Knowledge Base.

Never heard about that. To understand more about FSMO roles, refer to this article: http://oreilly.com/pub/a/windows/2004/06/15/fsmo.html For migration of DHCP, refer to this Microsoft article: http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx If you want to ensure high-availabiliy of DHCP service, you can proceed by: Using the 50 / 50 rule: Use two DHCP servers in the same subnet and divide the IP addresses pool on both servers Using the 80 / 20 rule (AKAIK it is a Microsoft one): Use a DHCP server in your subnet with 80% of IP addresses of your scope. In another subnet add another DHCP server with 20% of IP addresses of your scope and configure a DHCP relay agent to forward DHCP Discover packets to this DHCP server if the one in your subnet is down. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration

Thanks JM for your repsonse. Yes, I could have easily been hallucinating after reading so many win 2008 docs... :-) -Hieu

Thanks JM for your repsonse, and I'll post the question once next time. -Hieu

Thanks Mr. X for your response. It certainly cleared things up for me.-Hieu