Active-active clustering is a data protection and disaster recovery mechanism provided by ACOS, offering site 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. For the requirements on environment, software, hardware, and networking, as well as the detailed procedure for deploying an active-active cluster, refer to Deploying an ACOS active-active cluster of the corresponding version.
The network topology of an active-active cluster consists of three parts: the primary availability zone, the secondary availability zone, and the witness node. When managing an active-active cluster, in addition to the hardware, virtual machines (using AVE), 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 cluster's topology status.
