DNS failover is an HCP-specific method for automatically managing service by remote systems. With active/active replication, other options exist:
•In an environment in which load balancers are used to spread client requests among multiple HCP systems, if one of the systems fails, the load balancers can ensure that the requests go to other systems.
•In a cloud storage environment, the networking and DNS infrastructure can be configured to support multiple HCP systems that use the same domain names. In this configuration, client requests are normally handled by the local DNS, but if an HCP system fails, the request can be passed on to another DNS that’s local to another HCP system.
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