Our DNS Failover service can work two different ways. The first option is to
monitor your primary server. If it goes offline, the DNS Failover will
automatically switch the A record to point to your backup server(s). You can
have as many backup servers as you want. It will monitor them all to know which
are available and will always publish the first working server.
The second method is the round robin distributed solution. Our system will
create A records for all of the servers that are available. Should it detect
that one of them goes offline, it will simply delete the A record for that
server and continue directing traffic to the remaining servers.
DID YOU KNOW? We also offer a Cloud Load Balancing solution that does failover much better, and without the TTL issues. Contact firstname.lastname@example.org or call 800-619-8801 for more information!