In this configuration, the cluster system can be operated on multiple Availability Zones.
By applying PRIMECLUSTER to the virtual machine, in the event of an error, an application can be switched from the operational virtual machine to the standby virtual machine in a short time to provide a highly reliable virtual machine 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.
Note
In the cluster system of multiple Availability Zones, if an error of an Availability Zone occurs, automatic switch to the standby node is not performed, and the node becomes LEFTCLUSTER. To restore the operation, it is necessary to recover from the LEFTCLUSTER state.
For how to recover from the LEFTCLUSTER state, refer to "PRIMECLUSTER Cluster Foundation (CF) Configuration and Administration Guide."
Figure 25.1 Cluster system in multiple Availability Zones
