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DNS Coach Explains Secondary DNS

Dear DNS Coach,

What is Secondary DNS and why should I care?

In the business world redundancies hold a negative connotation. Why would anyone do the same thing twice unless they were overcompensating for something? However, in the world of DNS, redundancies are what define a provider’s success.

In a nutshell,

  1. Secondary DNS creates a clone of the original zone information
  2. This is found at the primary DNS provider
  3. And then duplicates the original zone info on the DNS Made Easy IP Anycast+ network.

Should a user’s primary DNS operator suffer an outage, serving the domain’s record information on multiple DNS services provides users with an extra level of redundancy.

  • For more information check out our help site.

 

But DNS Coach, why does this matter?

Well, if the user’s primary name servers were to go down as a result of a DDoS attack or for even an internal system failure: the DNS lookup done by the resolving name servers would have the opportunity to retry the DNS lookup at the secondary DNS service.

  • Secondary DNS services are always running and require no startup time or downtime.
  • This is all a seamless process that provides a barely noticeable effect to the end user and provides record-holding uptime histories like DNS Made Easy.

 

If you want your question answered next week, Tweet @DNSMadeEasy

Sincerely,

 

DNS Coach

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