Creating external volumes with data direct mapping enabled

Before you begin

The Storage Administrator (Provisioning) role is required to perform this task.

Procedure

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

  2. Click Logical Devices.

  3. In the LDEVs pane of the Logical Devices window, click Create LDEVs.

  4. In the Create LDEVs window, from the Provisioning Type list, select External as a provisioning type for the LDEV to be created.

  5. In Data Direct Mapping, select Enable.

  6. Click Select Free Spaces.

  7. In the Select Free Spaces window, in the Available Free Spaces table, select the free space to be assigned to the volumes. Do the following, if necessary:

    • To specify the conditions and show the free space, click Filter, specify the conditions, and then click Apply.
    • To specify the unit for capacity and the number of rows to view, click Options.

  8. Click View Physical Location.

  9. In the View Physical Location window, confirm where the selected free space is physically located, and then click Close.

  10. In the Select Free Spaces window, if the selected free spaces have no issues, click OK.

  11. In the Number of LDEVs per External Volume, confirm that 1 is displayed.

  12. In LDEV Name, specify a name for this LDEV.

    1. In Prefix, type the characters that will become the fixed characters for the beginning of the LDEV name. The characters are case-sensitive.

    2. In Initial Number, type the initial number that will follow the prefix name.

  13. In Format Type, select the format type for the LDEV from the list.

    For an external volume, if you create the LDEV whose emulation type is the open system, select Normal Format or No Format. If the external volume can be used as it is, select No Format. The created LDEV can be used without formatting. If the external volume needs to be formatted, select No Format and then format the volume with the external storage system, or select Normal Format.

  14. Click Options to show more options.

  15. In Initial LDEV ID, make sure that an LDEV ID is set. To confirm the used number and unavailable number, click View LDEV IDs to open the View LDEV IDs window.

    1. In Initial LDEV ID in the Create LDEVs window, click View LDEV IDs. In the View LDEV IDs window, the matrix vertical scale represents the second-to-last digit of the LDEV number, and the horizontal scale represents the last digit of the LDEV number. The LDEV IDs table shows the available, used, and disabled LDEV IDs. In the table, used LDEV numbers appear in blue, unavailable numbers appear in gray, and unused numbers appear in white. LDEV numbers that are unavailable may be already in use, or already assigned to another emulation group (group by 32 LDEV numbers).

    2. Click Close.

  16. In the Create LDEVs window, from the MP Unit ID list, select a MP unit to be used by the LDEVs.

    • If you assign a specific MP unit, select the ID of the MP unit.
    • If you can assign any MP unit, click Auto.

  17. Click Add.

    The created LDEVs are added to the Selected LDEVs table.

    If these required items are not registered, you cannot click Add.

  18. If necessary, change the following LDEV settings:

    1. Click Change LDEV Settings to open the Change LDEV Settings window.

  19. If necessary, delete an LDEV from the Selected LDEVs table. Select an LDEV to delete, and then click Remove.

  20. Click Finish. The Confirm window appears.

    To continue the operation for setting the LU path and defining a logical unit, click Next.

  21. In the Task Name text box, type a unique name for the task or accept the default.

    You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.

  22. Click Apply.

    If the Go to tasks window for status check box is selected, the Tasks window appears.
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