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Administrator Guide 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

Routine maintenance activities are the most common activities for the storage device, including powering on or off the storage device, managing users, modifying basic parameters of the storage device, and managing hardware components. This document applies to the system administrators who are responsible for carrying out routine maintenance activities, monitoring the storage device, and rectifying common device faults.
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Managing LUNs

Managing LUNs

This section describes common operations to manage LUNs including creation, modification and deletion, and precautions for performing the operations.

Table B-9 lists common operations to manage LUNs.
Table B-9  Common operations to manage LUNs

Operation

Scenario

Description

Create

The storage space of a newly created storage pool cannot be identified by a host. The host can use the storage space only after the storage space of the storage pool is divided into multiple LUNs and the LUNs are mapped to the host.

Only administrators and super administrators are allowed to create LUNs.

Query

Query basic information about LUNs, owning LUN group information, or SmartCache information.

-

Modify

Modify LUNs' general information, SmartTier, SmartQoS, and SmartPartition information, as well as SmartDedupe and SmartCompression policies based on actual conditions.

For modifying information about a value-added feature, ensure that its license file has been loaded and activated.

Delete

If a LUN is not longer used by current host services, delete the LUN and release storage space.

  • Services on a LUN have been stopped and the LUN has not been configured with any value-added services.
  • The LUN is not added to a LUN group.

Expand

Expand the LUN capacity if the current LUN capacity is insufficient for services.

  • A LUN used by the snapshot, remote replication, clone, LUN copy, SmartMigration, or HyperMirror cannot be expanded.
  • Rescan for LUNs on hosts after expansion.

Destroy

If a LUN is no longer used, you can destroy data on the LUN. After the operation is performed, deleted data cannot be restored, ensuring data security.

  • The LUN to be destroyed must be a thick LUN. A thin LUN cannot be fully destroyed because of capacity-on-write and space release.
  • The SmartErase function cannot be performed for an abnormal LUN.
  • The SmartErase function cannot be performed for the LUN that is added to a LUN group.
  • The SmartErase function cannot be performed for the LUN configured with value-added services.
  • The SmartErase function cannot be performed for the LUN whose migration property is not set to No relocation.
  • If the SmartErase function is performed on a LUN and you need to continue to use this LUN, to ensure normal running of services, format the LUN and then configure services.
NOTE:
For details about how to perform the management operations above, see the Help.
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Updated: 2019-08-14

Document ID: EDOC1000084191

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