We have an existing 2003 Server Environment and Exchange server 2003 coexistence with Exchange server 2010 with DAG setup. We have recently decided to move to a windows server 2012 standard Environment. How do I promote the new windows Server 2012 std to DC and remove the 2003 Server from the Environment. My users are currently using the old 2003 DC to logon.

in brief

We have windows 2003 enterprise + sp2 Domain controller (holding DNS as well) and Exchange server 2003 Entp + Exchange server 2010 running in Coexistence with DAG.

We have decided to remove the 2003 Server from the Environment and go with Windows 2012 Standard OS. I would know to know the what will be the impact on Exchange server environment if any ?

please suggest right path with less downtime.Mailing service should not be affe

Simply migrate the remaining mailboxes to your Exchange Server 2010 and then you can decommission your Exchange Server 2003. More if you ask them here: https://social.technet.microsoft.com/Forums/exchange/en-US/home?forum=exchangesvrgenerallegacy

Once done, you can upgrade to ADDS 2012 and introduce your first DC running Windows Server 2012. Please note that your Exchange Servers should be SP2 or later to support your new DC. More details here: http://blogs.technet.com/b/rmilne/archive/2013/09/17/exchange-support-for-windows-server-2012-r2.aspx

Hi,

I just want to confirm what is the current situation.

Did the suggestions from Ahmed MALEK work?

Please feel free to let us know if you need further assistance.

Regards.

I have not worked on Ahmed's suggestions.

This is production environment and wish to get more details on Exchange Server part.

it is not possible to move all users to new Environment. there is 32bit OS dependency as well..

I would prefer any standard guideline document

Hi,

For the AD part,  you could do the upgrade:

http://blogs.msmvps.com/mweber/2012/07/30/upgrading-an-active-directory-domain-from-windows-server-2003-or-windows-server-2003-r2-to-windows-server-2012/

For the exchange part, i think you may ask in exchange forums:

https://social.technet.microsoft.com/Forums/office/en-US/home?category=exchangeserver

Please note, the test lab or backup is needed before you do the upgrade process.

Regards.

Hi,

Any update about the issue?

Regards.

for sure I'll update the progress , I am about to migrate my legacy users