DNS failover / redundancy

Simple question. I have my domain's dns zone on a server (original shared hosting server) but it points to my new dedicated server (used for CPU resources). So the dns zone uses ns1/ns2 (again on shared server pointing to #2 server).

How do I set up the domain so that if server #1 (shared) goes down, my site stays up? I was thinking adding ns/ns0 to the nameservers of that domain (ns/ns0 is located on server #2 of course). So if I apply the ns/ns0 IP's and add ns/ns0 to nameserver summary would that be considered at least a workable method for dns failover for that domain?

 

 

 

 

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