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LUN Copy Feature Guide 06

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

"This document describes the principles and application scenarios of LUN copy, and how to configure and manage LUN copy."
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Requirement Analysis

Requirement Analysis

This section analyzes the requirement of an enterprise on using LUN copy to migrate data and draws a conclusion from the analysis.

Requirement Source

  • Enterprise service introduction

    An enterprise's data management service runs on an application server on weekdays only. A set of storage system (device A) provides storage space for the service, and a maintenance terminal is used to manage the storage system. The application server is connected to two Fibre Channel switches. Figure 2-1 shows the network diagram.

    Figure 2-1  Live network

    Table 2-1 describes the device A configuration.
    Table 2-1  Configuration information

    LUN

    Capacity

    LUN_01

    500 GB

  • Service Requirements

    The enterprise is developing rapidly, along which the service data amount also increases notably. The device A falls short to meet the performance requirement. Therefore, the customer wants to buy a new storage system (device B) of the same version as device A, and migrates the existing data from the device A to the device B. Specific requirements are as follows:
    • Data will be migrated from the device A to the device B.
    • After the migration is completed, the device B replaces the device A as the storage system.

Requirement Analysis and Conclusion

  • Feature selection analysis

    According to the requirements, what the customer needs is a data replication solution. Huawei storage systems can provide three value-added data replication features: clone, remote replication, and LUN copy. Table 2-2 describes the replication method and application scenarios of each feature.
    Table 2-2  Feature selection analysis

    Consideration

    Clone

    Remote Replication

    LUN Copy

    Storage system support

    Within a storage system

    Between storage systems

    Within a storage system or between storage systems

    Typical application scenarios

    Data backup and testing

    Data backup and disaster recovery

    Data backup and migration

    Conclusion 1: As the customer needs to migrate data between the device A and device B, it can be concluded from the previous table that LUN copy is a feasible solution.

    Because the customer requires replacing the device A with the device B, the live network can be retained.

    Conclusion 2: To use the device B to take over the host service, deploy the device B without changing the live network, complete the data migration, and map the target LUN from the device B to the host through the LUN group.

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Updated: 2019-01-28

Document ID: EDOC1000059442

Views: 6891

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