The HA configuration, sometimes called a cluster, provides data redundancy. A Cloud SQL instance configured for HA is also called a regional instance and is located in a primary and secondary zone within the configured region.

What is HA mode in firewall?

High Availability (HA) is a clustering technology that is used to maintain uninterrupted service in the event of power, hardware, or software failure. Sophos Firewall devices can be configured in Active-Active or Active-Passive HA modes.

What is HA in cloud?

According to [5] availability is calculated as the percentage of time an application and its services are available, given a specific time interval. One achieves high availability (HA) when the service in question is unavailable less than 5.25 minutes per year, meaning at least 99.999 % availability (“five nines”).