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LUN Copy Feature Guide 09

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, 6800 V3, and 6900 V3 Storage System V300R001

"This document describes the principles and application scenarios of LUN copy, and how to configure and manage LUN copy."
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Restrictions

Restrictions

This section describes the impacts of LUN copy on system performance and other features.

Impact on System Service Continuity

LUN copy requires host service suspension to ensure data availability. After the replication is complete, the host service can be resumed.

Impact on Other Features

Table 1-2 lists the relationship between the LUN copy feature and other features such as snapshot, clone, remote replication, SmartMigration and HyperMirror in terms of the LUN use.
Table 1-2  Relationship between value-added features in terms of the LUN use

LUN Used by Another Feature

Source LUN of LUN Copy

Target LUN of LUN Copy

Source LUN of LUN copy

a

Target LUN of LUN copy

×b

Snapshot source LUN

Snapshot LUN

Primary LUN of clone

Secondary LUN of clone

×

×

Primary LUN of remote replication

×

Secondary LUN of remote replication

×

Source LUN of SmartMigration

×

×

Target LUN of SmartMigration

×

×

Mirror LUN of HyperMirror

Mirror Copies of HyperMirror

×

×

eDevLUN of SmartVirtualization

×

×

NOTICE:
If you select an existing LUN to be the secondary LUN or target LUN of a value-added feature, data on the existing LUN may be overwritten. Therefore, perform this operation with caution.
  • a: indicates that the two LUNs are not mutually exclusive.
  • b: × indicates that the two LUNs are mutually exclusive.

Specifications Restriction

The maximum quantities of supported LUN copy pairs and target LUNs differ depending on product model. For details, refer to Software Specifications in OceanStor 5300 V3&5500 V3&5600 V3&5800 V3&6800 V3&6900 V3 Storage System V300R001 Product Description.

Application Restriction

LUN copy can be implemented within OceanStor storage systems or between OceanStor storage systems and Huawei-certified third-party storage systems. Table 1-3 describes the storage systems supported by LUN copy.
Table 1-3  Storage systems supported by LUN copy

Storage System Where a Source LUN Resides

OceanStor Storage System Where a Target LUN Resides

Huawei-Certified Third-Party Storage System Where a Target LUN Resides

OceanStor storage system

a

Huawei-certified third-party storage system

×b

  • a: indicates LUN copy can be implemented between the two storage systems.
  • b: × indicates LUN copy cannot be implemented between the two storage systems.
NOTE:

For details about the OceanStor series storage system models and mainstream third-party storage system models that the LUN copy is compatible with, log in to the HUAWEI enterprise website http://enterprise.huawei.com, search Storage Interoperability Matrix, select the category Collateral. View the models in the Huawei OceanStor V3 Converged Storage Interoperability Matrix Huawei OceanStor 18000 Series Storage Interoperability Matrix.

Storage systems that are not listed in the interoperability matrix are incompatible third-party storage systems. You are advised not to connect incompatible third-party storage systems to a local storage system for hosting because the local storage system is incompatible with those third-party storage systems. When you want to connect an incompatible third-party storage system to a local storage system to meet service requirements, contact Huawei technical support.

Table 1-4  Connection methods between a local storage system and a compatible heterogeneous storage system

Heterogeneous Storage System

Connection Method

OceanStor S2200T/S2600T/S5500T/S5600T/S5800T/S6800T storage system

Fibre Channel or iSCSI connection

OceanStor S2900/S3900/S5900/S6900 storage system

OceanStor S2600 storage system

OceanStor S5300/S5500/S5600 storage system

OceanStor S6800E storage system

OceanStor S3100/S3200/S6800 storage system

Fibre Channel

Storage devices from mainstream vendors (for example, IBM DS4700 and EMC CX4-240)

Fibre Channel

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Updated: 2019-01-28

Document ID: EDOC1000045750

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