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OceanStor 18500, 18800, and 18800F Storage System V100R001C30 Remote Replication Feature Guide 09

This document describes the remote replication feature, in terms of the implementation principle, application scenario, configuration process, and reference information.
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Preparation of Configuration

Preparation of Configuration

To successfully configure the remote replication feature, you must make preparations in advance, for example, obtaining the remote replication license and selecting host ports for data transmission.

Obtaining the Remote Replication License

Before configuring remote replication, import the remote replication license file into the storage systems to activate the remote replication function. If you have not purchased the remote replication license, contact Huawei technical support engineers and purchase it. If you have purchased the remote replication license, apply for a license file and import it as instructed in theOceanStor 18500&18800&18800F Storage System V100R001C30 Installation Guide.

Selecting Host Ports

Remote replication supports data transmission by using Fibre Channel host ports or iSCSI host ports.

  • Fibre Channel host ports

    Fibre Channel host ports feature high transmission rate and low transmission latency. However, Fibre Channel host ports use multi-mode optical fibers as transmission media. Multi-mode optical fibers support only a short transmission distance. Therefore, remote replication that uses Fibre Channel host ports is suitable for short-distance backup and disaster recovery.

  • iSCSI host ports

    Typically, iSCSI host ports are inferior to Fibre Channel host ports in terms of transmission rate and latency. However, iSCSI host ports carry data by using the IP protocol. Therefore, data can be backed up to secondary LUNs through the Internet or dedicated cables, implementing remote backup and disaster recovery across cities, provinces, and even countries.

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Updated: 2019-01-28

Document ID: EDOC1000077758

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