DNS caching windows server 2016

will phinney 21 Reputation points
2020-10-26T15:55:57.983+00:00

This is an odd question, kind of a n00b, but does anybody know if there is a way to cache DNS on my windows 2016 server so that it doesn't check for new dns entires for an extended period of time? For example, I want it to keep all records for a minimum of 8 hours. This would be in the event that a major DNS carrier were to go down I would have all the cached for a minimum time.

Thanks

Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
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  1. Dave Patrick 426.1K Reputation points MVP
    2020-10-26T16:12:59.45+00:00

    If the public DNS you're using has become unreliable I'd either REPLACE it with another or you can also ADD multiples to forwarders. As to caching by default the client DNS cache holds for 24 hours.

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

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  2. Dave Patrick 426.1K Reputation points MVP
    2020-10-26T15:59:47.19+00:00

    Not sure what is meant. One option would be to turn off or adjust the scavenging
    https://techcommunity.microsoft.com/t5/azure-active-directory-identity/dns-scavenging-and-ad/ba-p/243140

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

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  3. will phinney 21 Reputation points
    2020-10-26T16:04:29.873+00:00

    We had an issue where a DNS provider went down, so we were not longer able to access those public records. I'm not sure how to tune this, but was wondering if the DNS provider were to go down, but we had caching enabled, would some how circumvent the outage. I know this isn't the best idea, but was wondering if anybody had done that.

    Thanks

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  4. Dave Patrick 426.1K Reputation points MVP
    2020-10-26T16:05:41.303+00:00

    Are you asking about domain DNS or public DNS?

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