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HyperReplication Feature Guide for Block

OceanStor V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5110F V5, 5300 V5, 5300F V5, 5500 V5, 5500F V5, 5600 V5, 5600F V5, 5800 V5, 5800F V5, 6800 V5, 6800F V5, 18500 V5, 18500F V5, 18800 V5, and 18800F V5. It describes the working principle and application scenarios of the HyperReplication feature (for block). Also, it explains how to configure and manage the feature.
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Overview

Overview

This section describes the background, definition, and benefits of the remote replication feature.

Background

As the digitalization drive advances in various industries, data has become critical to the operation of enterprises, and customers impose increasingly demanding requirements on the stability of storage systems. Although some storage devices offer extremely high stability, they fail to prevent irrecoverable damage to production systems upon natural disasters. To ensure continuity, recoverability, and high availability of service data, remote DR solutions emerge. The remote replication technology is one of the key technologies used in remote DR solutions.

Definition

When a storage system runs block services, remote replication supports the following two modes:

  • Synchronous remote replication

    In this mode, data is synchronized in real time to achieve full protection for data consistency, minimizing data loss in the event of a disaster.

  • Asynchronous remote replication

    In this mode, data is synchronized periodically to minimize service performance deterioration caused by the latency of long-distance data transmission.

Benefits

Table 1-1 lists the benefits of the remote replication feature.

Table 1-1 Benefits of the remote replication feature

Function

Purpose

Benefit

Remote backup and recovery

To recover service data using backup data in the remote storage system after the service data becomes unusable.

This function prevents damage caused by data loss in the case that data at the primary site becomes unusable.

Continuous support for services

To quickly switch service data from the primary site to the secondary site, protecting service continuity.

This function prevents damage caused by a service interruption upon a failure at the primary site.

Disaster recovery

To recover data at the primary site using backup data at the secondary site in the event of a disaster.

This function prevents the damage caused by service data loss or a long recovery duration upon a disaster.

Note 1: A primary site is a production center that includes the primary storage system, application servers, and links.

Note 2: A secondary site is a backup center that includes the secondary storage system, application servers, and links.

Note 3: Unless otherwise specified, hosts mentioned in this document refer to application servers.

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Updated: 2019-07-11

Document ID: EDOC1000181492

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