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Multible DNS Only Servers

Discussion in 'Bind / DNS / Nameserver Issues' started by vlee, May 17, 2013.

  1. vlee

    vlee Well-Known Member

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    I would like to know would it be better to have at least 3 DNS servers instead of 2 DNS servers.

    I am toying with the thought of making some changes to my hosting network make it better for redundancy and just want to other cPanel Root Administrators and cPanel's Staff on this matter.

    I see this a lot below in DNS scan sites.

    You have 2 nameservers.

    You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7.

    I was I thinking of these 3 options below

    Option 1

    Leave my current setup alone where my NS1 and NS2 is on the same server in the same network and just and add new Server DNS Only server at different location and different network and add NS3 to that one.

    Option 2

    Just move the NS2 to a new Server DNS Only server at different location and different network. Then still have 2 Name Servers.

    Option 3
    NS1 to a new Server DNS Only server at different location and different network
    NS2 to a new Server DNS Only server at different location and different network
    NS3 to a new Server DNS Only server at different location and different network

    What do you cPanel Root Administrators and cPanel's Staff think on this matter?
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    It's really a matter of personal preference on how much redundancy you would like to have. If you want the most redundancy, then "Option 3" that you mentioned would be your best choice.

    Thank you.
     
  3. storminternet

    storminternet Well-Known Member

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    It's always better to have dns redundancy for avoid downtime in case of dns. However keep the dns records same at all three dns servers and apply the dns changes at all three dns servers in case if you want to make any changes.
     
  4. vlee

    vlee Well-Known Member

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    Thank you Michael. Agree with you "If you want the most redundancy" I was just making sure that having 3 DNS Servers was is a good idea. With chances of backbone provider that may have issues such as routing and/or other problems at least the other DNS Servers will pick up the slack until the issues are fixed.

    It will not be cheap to too do but it will better to do this for the long run.

    Option 3
    NS1 to a new Server DNS Only server at different location and different network (TW Network)
    NS2 to a new Server DNS Only server at different location and different network (Level 3 Network)
    NS3 to a new Server DNS Only server at different location and different network (Verizon Network)
     
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