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HyperClone 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. This document describes the implementation principles and application scenarios of the clone feature. Also, it explains how to configure and manage clones.
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Overview

Overview

This section describes the background, definition, and benefits of the LUN clone feature.

Background

In some applications, users need to obtain a copy of production data for independent data testing and analysis. Such needs give rise to data protection technology called clone. To meet user requirements, Huawei has developed the HyperClone feature that is classified into LUN clone and file system clone functions. This document describes how LUN clone meets the requirement of data backup.

Definition

LUN clone, a type of snapshot technology, obtains fully populated point-in-time copies of source data. LUN clone is a backup approach that allows incremental synchronization.

  • "Fully populated" indicates that the source data is completely duplicated to generate a data copy.
  • "Incremental synchronization" indicates that data changes made to the source data are dynamically synchronized to the data copy.

In the LUN clone feature provided by OceanStor storage systems, a LUN where source data resides is called a primary LUN, and a LUN that stores a copy of the source data is called a secondary LUN.

Benefits

LUN clone provides the following benefits:

  • Complete data backup

    Data is fully backed up. Data restoration is independent of source data, providing highly reliable data protection.

  • Continuous data protection

    Data copies can be synchronized with source data in real time, providing continuous data protection to achieve zero data loss.

  • Reliable service continuity

    Data can be backed up and restored non-disruptively, achieving zero backup window.

  • Effective performance guarantee

    Multiple copies of the same source data can be generated and then independently used for application testing and data analysis. The primary LUN and its secondary LUNs do not affect each other's performance. In this way, when multiple services are running concurrently, performance of each service is guaranteed.

  • Stable data consistency

    Copies of different source data sets can be generated simultaneously to maintain point-in-time consistency across those data copies. This approach protects the correlation among copies of different source data sets in applications such as a database.

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Updated: 2019-07-11

Document ID: EDOC1000181501

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