Redundancy IP address for website

[suhail]

We are hosting one website  with one public IP address and Customer added that Public address on the Domain  server from go- daddy . Now customer wants another public IP address from different ISP and he can’t add two Public IP address to his Go-daddy domain .   Please advise any other possibilities to add two Public IP address from different ISP mapped to one Private IP address and Linked to  website on the outside domain . is there like any Virtual IP address concept will work in this situation ? if yes please advise me how.   Many thanks

[Nils]

You're able to have two VIP with two different external IPs mapped to the same private IP.

But then you'll need to have these two external IPs specified in the DNS for the domain.