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ITSupport-5274 asked DSPatrick answered

Configuration of 2016 AD for failover

Hello-
We have 2 Windows Server 2016 servers/DCs as follows:

Server1: Physical 2016 server running AD, DHCP, and DNS.
Server 2: VM 2016 server running AD, DHCP, and DNS.

We are attempting to create a failover environment without using a failover cluster. We have setup DHCP failover from Server1 to Server2 in hot standby mode. DNS is out-of-the-box AD-integrated.

Question: is it a Microsoft best practice to hand out the IP address of server2 as a secondary DNS server in the DHCP scope options? Were server1 to fail, would this model allow for automatic failover?

Thanks

windows-active-directory
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DSPatrick avatar image
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DSPatrick answered

Yes, absolutely. the DHCP server can hand out two (or more) DNS servers to answer requests in the event one happens to be patching / rebooting, etc.

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ITSupport-5274 avatar image
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ITSupport-5274 answered

My colleague swears this is an absolute misconfiguration and against MS best practices. Can someone point me to some MS docs on this one?

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DSPatrick avatar image
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DSPatrick answered

I'm sure there are many others but one from a quick search. Configure the primary and secondary DNS client settings to point to local primary and secondary DNS servers (if local DNS servers are available) that host the DNS zone for the computer's Active Directory domain.
https://docs.microsoft.com/en-us/troubleshoot/windows-server/networking/best-practices-for-dns-client-settings#windows-2000-server-and-windows-server-2003-member-servers


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ITSupport-5274 avatar image
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ITSupport-5274 answered

He's not buying it :) Any more modern docs?

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DSPatrick avatar image
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DSPatrick answered DSPatrick edited

He's not buying it

Well, not much we can do about that, it has not changed. I'd suggest looking around here.
https://docs.microsoft.com/en-us/windows-server/

or another option is to start a case here with product support.
https://support.serviceshub.microsoft.com/supportforbusiness

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VickyWang-MFST answered

Hi,
Thank you for posting in our forum.
I agree with the MVP's point of view, but this question also involves knowledge of net or ha.
If it is not resolved from the perspective of AD alone, you can post on the forums of Net and HA.
Maybe they can give you a better solution
Hope this information can help you
Best wishes
Vicky

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VickyWang-MFST answered

Hi,
How are things going? Could you please send me an update so that we can continue to work on this problem and resolve it? Thanks for your help.
Best wishes
Vicky

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VickyWang-MFST answered

Hi,

Just checking in to see if the information provided was helpful.

Please let us know if you would like further assistance.

Best Regards,
Vicky

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DSPatrick avatar image
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DSPatrick answered

Just checking if there's any progress or updates?

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VickyWang-MFST avatar image
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VickyWang-MFST answered

Hi,
Welcome to share your current situation if there are any updates.
Please feel free to let us know if you need further assistance.
Best Regards,
Vicky

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