Changing Exchange 2013 and Windows 2012R2 Domain controller's AD Site.

So I have an Exchange 2013 box and DC that I would like to change back to my default site. Is there anything I need to do before doing this? Right now I have an Exchange 2013 box with Mbx and CAS roles in the first site. I am moving the second Exchange back to the first default site so I can have some HA with my CAS boxes (as budget allows). There are no DAGs set up between the two yet. Please advise.


Thanks.
internetworksAsked:
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rgormanCommented:
There should be no issues at all.  Once the IP's are updated and DNS reflects those IP changes you should be able to verify replication of AD is working.  Exchange shouldn't have any issues as long as AD replication is working.
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internetworksAuthor Commented:
Which IP changes are you speaking of? When I add the subnet back into the First original site? I am not changing any IPs on the devices themselves.
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rgormanCommented:
I guess if you are keeping the same address range and just setting up internal routing at the one site between the two previously site separated subnets you shouldn't need to do much other than associate the subnet to the main site in AD sites and services and make sure that gets replicated around.
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Will SzymkowskiSenior Solution ArchitectCommented:
For this to happen correctly, all you need to do is this following...
- Stop all of the Exchange Services (to stop mail flow)
- Set all of the Microsoft Exchange services to disabled
- Change the IP address to the same scheme as the AD Site you want to move it to
- Power down the Exchange Server
- If you have to physically move the server do so
- Power on the Exchange server with the new IP (that matches the AD Site it is in)
- Login to the Exchange server
- Open the command prompt type set logonserver press enter
- This should show you which DC you are authenticating to (it should be the DC in the AD site you moved it to)
- Open Services.msc on the Exchange server, Set all of the Exchange services to Automatic
- Reboot the Exchange server and verify that services have started correctly
- Check your database/logs etc to ensure there are no errors

Those are the steps I would follow to ensure that nothing is missed.

Will.
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Justin YeungSenior Systems EngineerCommented:
all you have to do is the change the IP subnet bind to the target site.

confirm replication

restart Exchange AD topology service on the target exchange server.
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internetworksAuthor Commented:
Thanks for the great detail!
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