Double A-records for failovers

Hello,

Yes, you can add multiple A (or AAAA) records for the same hostname, but it's worth understanding what this actually does before relying on it for failover. This setup is called round-robin DNS: when a DNS resolver looks up your domain, it returns the list of IP addresses, and the client (browser, OS, etc.) picks one, often in rotating or random order. This spreads traffic across servers, but it does not check whether a server is actually online. If one server goes down, DNS will still happily hand out its IP address to some visitors, who will then experience timeouts or errors rather than being automatically redirected to the working server.