Creating a SmartErase Task

Context

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.

Precautions

• 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.

Procedure

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 7-12 describes the parameters for LUN data destruction.

   Table 7-12 Parameters for LUN data destruction

   Parameter	Description	Setting
   DoD	The system overwrites data according to the DoD standard.	[Example] DoD
   Custom	The system overwrites the selected LUN according to the customized overwrite times. NOTE: If this parameter is selected, Overwrite Times is valid.	[Example] Custom
   Overwrite Times	Customizes data overwrite times. More overwrite times indicate more thorough destruction.	[Value range] 3 to 99 [Example] 3

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.