setup 4 dns servers for domain

I'd like to have my domain working on 2 servers, so when 1st one is down, visitor get redirected into 2nd server. Is it possible?
Let' say I have
dns1.server1.com 1.1.1.1
dns2.server1.com 1.1.1.2
dns3.server2.com 2.1.1.1
dns4.server2.com 2.1.1.2

How to setup a and maybe other records on both dns server? I have WHM.

 

 

 

 

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