Disabling data encryption on a parity group that contains pool volumes

Use this procedure to disable encryption on a parity group that contains pool volumes. If you want to disable encryption on a parity group that contains a pool volume associated with a pool for which capacity saving is enabled, you must disable the capacity saving setting on the pool before encryption can be disabled.

Before you begin

  • You must have the Storage Administrator (Provisioning) role to disable capacity saving and format volumes.
  • You must have the Security Administrator (View & Modify) role to disable encryption.

Procedure

  1. In the Explorer pane, expand the Storage Systems tree, expand Pools, and click the pool to which the target parity group belongs.

  2. Select the Virtual Volumes tab, and check the settings in the Capacity Saving Status column:

    • If the Capacity Saving Status of all volumes is Disabled, go to the next step.
    • If the Capacity Saving Status of all volumes is not Disabled, perform the following actions for each volume whose capacity saving status is not disabled:
      1. Block the volume.
      2. Format the volume.
      3. Disable the capacity saving setting on the volume.
      4. Verify that Capacity Saving Status of the volume shows Disabled.

  3. When the Capacity Saving Status for all volumes in the pool shows Disabled, check the deduplication setting for the pool (in the Deduplication row):

    • If Not Available or a hyphen is displayed, go to the next step.
    • If Available is displayed, open the Edit Pools window, and select No for Assign Deduplication System Data Volume.

  4. On the Virtual Volumes tab, check the LDEV status in the Status column of the table:

    • If the status of all LDEVs is Blocked, or if there are no LDEVs, go to the next step.
    • If the status of all LDEVs is not Blocked, block the LDEVs.

  5. Disable data encryption for the parity group as follows:

    1. In the Explorer pane, select Parity Groups.

    2. On the Parity Groups tab, confirm that all volumes in the target parity group are blocked (Blocked is displayed in the LDEV Status column).

      If the LDEV status of the parity group is not Blocked, block the volumes. You will not be able to disable encryption if the parity group contains unblocked volumes.

    3. On the Parity Groups tab, select the target parity group, and then click Edit Encryption.

    4. In the Edit Encryption window, select the parity group, select Disable for Encryption, and select the desired format type for Format Type.

      If the parity group contains a pool volume, select Normal Format. If you select Quick Format, an error will occur when you perform the task.

    5. Click Add.

      The parity group is added to the Selected Parity Groups list.

      If there are no volumes in the parity group, the format type in the Selected Parity Groups list is displayed as a hyphen (-).

    6. If you want to change the format type of a parity group in the Selected Parity Groups list, select the parity group, click Remove, and then add the parity group to the Selected Parity Groups list again with the desired format type.

    7. When you are finished adding parity groups to the Selected Parity Groups list, click Finish.

    8. In the Confirm window, confirm the settings, and enter your task name in Task Name.

      If you want the Task window to open after you click Apply, select Go to tasks window for status.

    9. Click Apply, and then click OK in the message that appears.

  6. Format the virtual volumes belonging to the pool you selected in step 1.

Next steps

If desired, you can now re-enable the capacity saving settings on the pool and virtual volumes.

  • To re-enable the deduplication function of the pool, select Yes for Assign Deduplication System Data Volume in the Edit Pools window.
  • To re-enable the capacity saving function of the volumes, set Capacity Saving to Compression or Deduplication and Compression in the Edit LDEVs window.

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