In Feburary 2016 03,
DNS servers, or name servers, are configured on the domain name registrar's website. The registrar is the company that the domain name is registered with. The exact steps to specify the server names will vary by registrar. There will usually be space to enter at least two different name server addresses. Redundancy and load balancing are automatically achieved by configuring multiple DNS servers.
Redundancy
Redundancy is achieved when at least two different DNS servers are specified for a domain name. This means that if one server is not available, the domain will still function because the other server(s) handle the DNS requests.
Load Balancing
Load balancing is useful for domain names that receive a large number of requests. It allows the requests to be spread over multiple DNS servers, so that a single server does not become overwhelmed. This type of load balancing is different than web server load balancing, which is a special type of DNS configuration that ensures a single web server does not become overloaded.
In Feburary 2016 03,
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