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Basic Storage Service Configuration Guide for Block

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado3000 V3, Dorado5000 V3, Dorado6000 V3, and Dorado18000 V3. It describes the basic storage services and explains how to configure and manage them.
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Deleting a Disk Domain (Applicable to V300R002C20 and Later)

Deleting a Disk Domain (Applicable to V300R002C20 and Later)

This operation enables you to delete a disk domain that is no longer needed.

Prerequisites

The storage pools in the disk domain have been deleted.

Procedure

  1. Choose Provisioning > Disk Domain.
  2. Delete a disk domain.

    1. Select the disk domain that you want to delete, and click Delete.

      The Delete Disk Domain dialog box is displayed.

    2. Optional: Select Erase Data.
      NOTE:
      • If Erase Data is selected, the system will first erase data from disks in the disk domain and then delete the disk domain. You are advised to select this option.
      • If Erase Data is not selected, the system will delete the disk domain but retain data that has been written to disks. This results in data leakage risks.
      1. Select I have read and understand the consequences associated with performing this operation, and click OK.

        The Erase Data dialog box is displayed.

      2. Set data erasure parameters.
        Table 5-5 describes the parameters.
        Table 5-5 Data erasure parameters

        Parameter

        Description

        Value

        Data Erasure Mechanism

        Indicates the disk data erasure method. The possible values of this parameter include:

        • block_erase: erases disk data by block.
        • cryptographic_erase: erases security keys. This value is available only for self-encrypting disks.
        • overwrite: overwrites disk data with specific pattern data.

        [Example]

        overwrite

        Data Erasure Standard

        Indicates the standard for overwriting disk data. The possible values include DoD 5220.22-M (E), DoD 5220.22-M (ECE), VSITR and Custom. This parameter is available only when Data Erasure Mechanism is set to overwrite.

        NOTE:

        When Data Erasure Standard is set to Custom, the system will overwrite disk data according to Pattern Value and Number of Overwrites specified by users.

        [Example]

        Custom

        Pattern Value

        Indicates the value used to overwrite disk data. A pattern value is one byte in length.

        NOTE:
        • This parameter is available only when Data Erasure Standard is set to Custom.
        • The value of this parameter can be r or a one-byte hexadecimal number starting with 0x. A maximum of three values can be entered.
        • Value r indicates a random number.

        [Example]

        0x00

        Number of Overwrites

        Indicates the number of times the disk data is overwritten using the pattern value.

        [Value range]

        1 to 15

        [Example]

        5

        Verify Data Erasure

        If Verify Data Erasure is set to Enable, the system verifies whether the disk data is erased completely.

        NOTE:

        This parameter is unavailable when Data Erasure Mechanism is set to crytographic_erase.

        [Default value]

        Disable

        Data to Be Verified (%)

        Indicates the percentage of the data to be verified to the total disk capacity.

        NOTE:

        This parameter is available only when Verify Data Erasure is set to Enable.

        [Value range]

        1 to 100

        [Default value]

        10

  3. Click OK.

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

    NOTE:

    When Verify Data Erasure is set to Enable, a Danger dialog box is displayed. Read the message in the dialog box carefully, select I have read and understand the consequences associated with performing this operation, and click OK.

  4. Click Close.
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Updated: 2019-07-17

Document ID: EDOC1100049139

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