I have a web server with about 20 websites and worry about what will happen if the server goes down. If the server fails and I need to restore an image to another server with a differnt IP address, how can I quickly reset the DNS "A" records to use the new IP address of the new server (I do have access to each domain registrar to change the DNS "A" record).
Can I enter multiple "A" records and it will failover to the second server (I do not want any traffic to the second server unless the first server is down)? Is there an intermediary DNS server that can help?
Can I enter multiple "A" records and it will failover to the second server (I do not want any traffic to the second server unless the first server is down)? Is there an intermediary DNS server that can help?