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Basic Storage Service Configuration Guide for Block

OceanStor V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5300 V5, 5500 V5, 5600 V5, 5800 V5, 6800 V5, 5300F V5, 5500F V5, 5600F V5, 5800F V5, 6800F V5, 18500 V5, 18800 V5, 18500F V5, and 18800F V5. It describes the basic storage services and explains how to configure and manage them.
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Creating a SmartErase Task

Creating a SmartErase Task

This operation enables you to create a SmartErase task to destruct data on a LUN. The destructed data cannot be recovered, ensuring data security.


The system provides the following two methods for data destruction:

  • DoD: The system overwrites a LUN in accordance with US Department of Defense (DoD) Standards to destruct source data.
  • Custom: The system overwrites a LUN according to the customized overwrite times.


  • SmartErase cannot be used to destruct data on the following LUNs:
    • LUNs created on SSDs
    • Thin LUNs

      Data in thin LUNs cannot be fully destructed because of capacity-on-write and space release. SmartErase is used to destruct data of thick LUNs created on HDDs.

    • LUNs that have been added to a SmartCache partition
    • Abnormal LUNs
    • LUNs in LUN groups
    • LUNs for which value-added services are configured
    • LUNs whose migration properties have not been set to No relocation.
  • Before using a LUN that has been destructed by SmartErase, format the LUN and then configure services.


  1. Log in to DeviceManager.
  2. Choose Provisioning > LUN.
  3. Select a LUN whose data you want to destruct and choose More > Create SmartErase Task.

    The Create SmartErase Task dialog box is displayed.

  4. Configure the parameters for LUN data destruction.

    Table 6-12 describes the parameters for LUN data destruction.
    Table 6-12 Parameters for LUN data destruction





    The system overwrites data according to the DoD standard.




    The system overwrites the selected LUN according to the customized overwrite times.


    If this parameter is selected, Overwrite Times is valid.



    Overwrite Times

    Customizes data overwrite times. More overwrite times indicate more thorough destruction.

    [Value range]

    3 to 99



  5. Confirm the LUN data destruction.


    If you want to stop the ongoing data destruction, right-click the LUN and choose Delete SmartErase Task.

    1. Click OK.

      The Warning dialog box is displayed.

    2. Confirm the information in the dialog box and select I have read and understand the consequences associated with performing this operation.
    3. Click OK.

      The Success dialog box is displayed, indicating that the operation succeeded.

    4. Click OK.

Updated: 2019-08-30

Document ID: EDOC1000181506

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