To achieve ensure efficient device failover to the backup/secondary Application Serverapplication server, the
uses the Address Reachability Service (ARS) to determine if
a the target server is reachable, providing the ability to "blacklist" a server IP address if it is found to be unreachable, as well as the ability to remove the server from the blacklisted state. ARS profiles can be created to configure blacklisting and recovery algorithm variants.
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