Moving primary DC/DNS server

Windows 2008R2 AD:
DC1/DNS - in location A – IP1, and DC2/DNS - in location B - IP2.
In locations E…Z we have some pc’s on DHCP (supplied by the “big brother” that handles the networking inside the campus perimeter) and some - on static IP’s. All workstations are Windows 7, and have the primary/secondary DNS IP settings as our DC’s.
Primary DC1 has to be relocated to location C with a new IP3 address.
What’s the easy/safe way to replace the primary IP on all pc’s: GPO, script, etc?
Looking for step by step instructions.
Thank you.
cohhelpAsked:
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gheistCommented:
You need to change SOA IP and wait 2X TTL (or check logs of old server)
If DNS is configured to workstations change them via GPO or DHCP
cohhelpAuthor Commented:
???
footechCommented:
For machines that get their information from DHCP, you will need to change the DHCP scope options so that the new IP is used.
For machines that are configured statically, one option is to use PowerShell to change what is configured.  An example of this is in Q_28639110.
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DLeaverCommented:
- Open ADSS and create a new Ad site, create a new AD IP object and associate it with the new site
- Adjust the scope options as recommended above and set the current secondary DC as the primary DNS
- Shutdown the DC1 and move to the new site
- Bring DC1 online and set the new IP and restart
- Move DC1 in ADSS to the new site
- Check the DC health (event logs, use the replmon command and use DCdiag)
- Once all is well then adjust the DHCP scope to include the DC1's IP

*If the DC is going to be off for longer than a few hours it may be worth considering transferring the FSMO roles - http://www.nogeekleftbehind.com/2013/05/28/powershell-move-ad-fsmo-roles-in-server-2012/
**GPO's will still apply as long as they have connection to another DC

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cohhelpAuthor Commented:
Thank U!
footechCommented:
Can't say I agree with how this was closed.  Dleaver's post describes how to move a DC to another site (except for the one point about changing the DHCP scope which I had mentioned before), not how to get all your machines to use the new IP for DNS.
cohhelpAuthor Commented:
"Looking for step by step instructions." - was the MAIN (timesaving) point.
The new Web appl doesn't allow me to decide how many point I'd assigned (like it was in the past).
Hope a personal THANK YOU VERY MUCH!!! will help to solve the "closing mis..."
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