DNS Failover

Automatic DNS Failover guarantees that as soon as your site goes down, all your traffic will be redirected to a secondary IP address, server or provider and enable your website or web-based applications to stay up and running.

What is DNS Failover?

DNS failover helps websites or network services remain accessible in the event of outage. The Domain Name System (DNS) is the protocol used to translate human readable hostnames into IP addresses. By providing two or more IP address in a DNS record, each IP representing an identical server, you can move traffic from a failing server to a live, redundant server.

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How Failover Works

Failover uses health checks to monitor the status of the IP address(es) in your records. Health checks run every 2-4 minutes from multiple monitoring locations.

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A failover event will only occur if two of our monitoring nodes report your primary IP address as down. In that case, we will run a quick health check for your first backup system. If it is available, we will update the record to point to your first backup IP address.

If that one goes down, we’ll check the second backup system and update the record. You can set up to four backup IP addresses in a failover record.

We will continue to monitor your primary endpoint, even after a failover event has occurred. When it comes back online, we will automatically “failback” traffic to your primary.

Ensure business continuity
Configure failover IPs to prevent customer attrition and impacts to internal workloads. Failover IPs are a strategic investment in the security and ongoing operations of your business. With failover IPs, you can quickly recover from disruption or failure of business-critical applications without impacting delivery of services to your customers or users.
Prevent interruption of service
The failover IP can be switched from one server to another in a few seconds. Therefore, a failover IP allows your hosting services to operate without interruption, helping you overcome hardware failure issues, system overruns, and all kinds of infrastructure problems. In order to take full advantage of the failover IP's power, your hosting services must be configured with the failover IP (as opposed to the server's static IP).
Maintain your configurations
If you switch the failover IP from one server to another, you keep the entire configuration linked to that failover IP. You are responsible for copying your configuration from one server to the other manually. Since the configurations are linked to the failover IP, and therefore the data and configurations remain the same, everything will keep working once you have switched the failover IP to the new server. You don't need to reconfigure anything with the static IP of your new server.
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