Active-active clustering is a data protection and disaster recovery mechanism provided by ACOS, offering fault-domain-level fault tolerance capabilities with a zero RPO (Recovery Point Objective) and minute-level RTO (Recovery Time Objective). When deploying an ACOS active-active cluster, you can use the AVE or VMware ESXi for virtualization.
The active-active cluster consists of the primary availability zone, secondary availability zone, and witness node. When managing an active-active cluster, in addition to the hardware, virtual machines (using AVE virtualization), networking, and alerts of the cluster, you also need to pay special attention to the operational status of the primary availability zone and second availability zone, as well as the topology status.
