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Version: 3.3

Prerequisites for Synchronous Disaster Recovery

The prerequisites provided in this section ensure a stable foundation for data replication and failover when you enable synchronous disaster recovery between the source and destination clusters. Review them carefully to prevent configuration issues during deployment.

Make sure you meet the following prerequisites in addition to the System Requirements:

  • An active Portworx Enterprise Disaster Recovery (DR) license.

  • The network latency between the source and destination clusters must not exceed 10 ms.

  • Your environment must meet the following network requirements:

    • All worker nodes in the source and destination clusters must be able to access the Kubernetes API endpoints (for example, ports 6443 and 443).
    • The source and destination clusters must be able to access ports in the 9001–9020 range to enable communication between Portworx worker nodes.
    • The source and destination clusters must be able to access ports in the 17001–17020 range to reach Portworx API endpoints.

    For more information on the list of required ports for your environment, see Network Requirements.

  • An external etcd-based KVDB is installed outside of the deployed Kubernetes clusters.
    For more information, see External KVDB for Portworx on Kubernetes.

Important:

  • For certain Kubernetes applications, an ApplicationRegistration custom resource (CR) is created before initiating migration. For more information, see the ApplicationRegistrations.