Introduction to the OceanStor ReplicationDirector host and host group

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In OceanStor ReplicationDirector, a host refers to an application server deployed at the production site or disaster recovery site. A host protected at the production site is called a production host, and a host used for testing or disaster recovery at the disaster recovery site is called a disaster recovery host. A host group is a collection of one or more hosts of the same type.

Other related questions:
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.

Introduction to protected groups of the OceanStor ReplicationDirector
Protected groups are service objects that are protected by the disaster recovery management system. Protected groups consist of protected objects and protection policies. You can create protected groups for various protected objects such as databases, local host file systems, LUNs, NAS file systems, and VMs. Select different protection policies to implement disaster recovery based on RPO/RTO requirements.

Number of hosts and host groups that a LUN is mapped to in OceanStor T Series unified storage systems
One LUN in OceanStor T Series unified storage can be mapped to a maximum of eight hosts or host groups.

Disaster recovery host types supported by an OceanStor ReplicationDirector agent
An OceanStor ReplicationDirector agent supports the following disaster recovery host types: Windows, Linux, AIX, and HP-UX.

Method used to map LUNs in OceanStor T Series unified storage
You can map LUNs in OceanStor T Series unified storage as follows: 1. The storage system provides two mapping modes: array port mapping type and initiator mapping type. Select a proper mapping mode based on the service requirements and networking. For more details, go to the Setting a Mapping Mode page. 2. If the connection is an iSCSI connection, the mapping can be added through the initiator. For more details, go to the Initiator Mapping Mode (for Fibre Channel Connections and iSCSI connections) page. 3. If the connection is a Fibre Channel connection, the mapping can be added through the initiator or array port. For more details, go to the Initiator Mapping Mode (for Fibre Channel Connections and iSCSI connections) page or the Array port Mapping Mode (for Fibre Channle Connections) page.

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