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Remote Replication Feature Guide for File 04

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R002

"This document describes the file system remote replication feature, in terms of the implementation principle,application scenario, and explains how to configure and manage this feature."
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Preparing for the Configuration

Preparing for the Configuration

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

Activating the License

Before configuring file system remote replication, import and activate its license file to enable the remote replication function to take effect.
  • If you do not have its license, contact technical support engineer to purchase the license.
  • If you have purchased its license, follow instructions in Managing License File of the Online Help to import the license file to the primary storage system and secondary storage system respectively and activate them.

Selecting Front-End Ports

Remote replication supports data transmission based on FC front-end ports or iSCSI front-end ports.
  • Fibre Channel port

    Fibre Channel ports feature high transmission rate and low transmission latency. However, Fibre Channel 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 ports is suitable for short-distance backup and DR.

  • iSCSI front-end port

    Typically, iSCSI front-end ports are inferior to Fibre Channel ports in terms of transmission rate and latency. However, iSCSI front-end ports carry data by using the IP protocol. Therefore, data can be backed up to the secondary storage system through the Internet or dedicated cables, achieving remote backup and DR across cities, provinces, and even countries.

Understanding the advantages and disadvantages of data transmission based on Fibre Channel ports and those of data transmission based on iSCSI front-end ports helps you select front-end ports that best meet service needs. After you select a front-end port type, the corresponding link type is also selected by default. In an actual networking scenario, you must also consider factors such as the bandwidth, latency, network quality, and security to ensure link efficiency and stability.

Updated: 2019-01-02

Document ID: EDOC1000069276

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