Introduction to storage-based replication and host-based replication of OceanStor ReplicationDirector

To protect the mission-critical data of disaster recovery virtual machines, OceanStor ReplicationDirector provides two disaster recovery modes:
1. Storage-based replication: The remote replication feature of the underlying SAN storage replicates and protects data of disaster recovery virtual machines. Both Synchronous remote replication and asynchronous remote replication are supported.
2. Host-based replication: FusionCompute enables the real-time asynchronous replication feature to replicate and protect disaster recovery virtual machine data. The feature is supported by Hypervisor of virtual storage and FusionStorage.

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