Configuration of 2016 AD for failover

IT Support 1 Reputation point
2021-05-12T22:16:55.873+00:00

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

Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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  1. Dave Patrick 426K Reputation points MVP
    2021-05-12T22:54:57.367+00:00

    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.

    --please don't forget to Accept as answer if the reply is helpful--

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  2. IT Support 1 Reputation point
    2021-05-12T23:03:16.147+00:00

    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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  3. Dave Patrick 426K Reputation points MVP
    2021-05-12T23:10:53.27+00:00

    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://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/best-practices-for-dns-client-settings#windows-2000-server-and-windows-server-2003-member-servers

    --please don't forget to Accept as answer if the reply is helpful--

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  4. IT Support 1 Reputation point
    2021-05-12T23:22:17.787+00:00

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

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  5. Dave Patrick 426K Reputation points MVP
    2021-05-12T23:32:47.67+00:00

    He's not buying it

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

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

    --please don't forget to Accept as answer if the reply is helpful--

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