Reconnecting external storage systems after powering off

After you run the Disconnect External Storage Volumes command, and then power off an external storage system, you cannot access external volumes from the local storage system even if you power on the external storage system again. To access the external storage system again, you must run the Reconnect External Storage Systems command. This process checks whether the defined configuration information of external volumes mapped as local storage volumes matches the status of the external volumes. If external volumes can be used as mapped volumes, I/O operations to the external volumes are accepted, and the volumes can be used again.

Before you begin

  • You must have the Storage Administrator (Provisioning) role to perform this task.
  • For details about the Block LDEVs window, see the Provisioning Guide for Open Systems.

Procedure

  1. Power on the external storage system.

  2. Reconnect the external system.

    For details, see Reconnecting external systems and volumes.

  3. If any external volumes were defined as DP-VOLs in the local storage system, use the steps listed in the following procedure to restore all blocked DP-VOLs.

    1. Open the Pools window.

      i. Click Storage Systems, and then expand the Storage Systems tree.

      ii. Click Pools.

    2. On the Pools tab, click the link for the pool you want to block.

    3. Select the Virtual Volumes tab.

    4. Click Select All Pages.

    5. On the menu bar, click Actions, Logical Device, and then Restore LDEVs.

    6. In the Restore LDEVs window, confirm the settings and enter the task name in the Task Name box.

    7. Click Apply in the Confirm window.

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