In this configuration, the cluster system can be operated on multiple Availability Zones.
By applying PRIMECLUSTER to the instance, in the event of an error, an application can be switched from the operational instance to the standby instance in a short time to provide a highly reliable instance environment.
Also when a network failure occurs in the entire Availability Zone or when Availability Zones become abnormal due to a large-scale disaster, business can be quickly restored by failing over to the standby system with fewer operations.
Figure 19.1 Cluster system in multiple Availability Zones (Multi-AZ)
