where is best physical location for DNS servers?

N

neorder

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since we are planning to separate our DNS servers, we are looking for some VPS servers to start as dedicated DNS servers.

my question is do i have to place these DNS servers near to my web servers? for eg. my servers are at US, is it ok i put DNS server at Euro? if not , would the response time be delayed?

how many DNS server do i need to setup? i have 3xDNS, so is it really necessary to setup 3 boxes for ns1, ns2,ns3?

what's the common practise for dedicated DNS server setup? any recommadation?

thanks in advance.
 
Try and figure out where your customer-base is.

A DNS request will be broadcasted to ALL DNS servers and the first one to answer provides the information the customer uses.

If you only have customers in the US then it would actually be pointless to put a DNS server in Europe when you have one in the US, unless your US DNS server goes down the Eoropean DNS will probably only be used in 1-2% of the cases (when the US server is too busy).
 
as you mentioned, i need only 2 DNS servers, it seems good enough already.

i have a couple of hundred domains now but expect to expanding to a couple of thousand.

may i know how busy is too busy? so 1 enough?
 
You need at least 2 according to the RFC and most domain registrars won't allow you to register domain names if you only have 1.

We host thousands of domains on 2 dedicated nameservers (1 in the US and 1 in Europe). More is not always better but if you have several websites that get thousands of hits per hour you should probably have 3 to be on the safe side (NOTE this is not scientific, just common sense). Any scaling of your DNS service can only be done when you provide information about your systems... are they dedicated DNS servers? what are the specs of the servers? what is the expected number of requests to the DNS servers?
 
resolveit said:
If you only have customers in the US then it would actually be pointless to put a DNS server in Europe when you have one in the US
Click to expand...
That's a bit oversimplified for several reasons.

It's not just your customers; it's your customers and the people who look at their websites.

And even if no one ever logs in from Europe a second nameserver in Europe is certainly better by all accounts than not having a second nameserver.

Jeff
 
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