Creating V-VOLs

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

1. Perform one of following to display the Create LDEVs window.

For Hitachi Command Suite:

• On the Resource tab, expand the Storage Systems tree. Right click Volumes of the target storage system, then select System GUI. On the LDEVs tab, select Create LDEVs.

For the General Tasks pane in Storage Navigator:

• On the General Tasks pane, select Create LDEVs.

For the Logical Devices window in Storage Navigator:

• Expand the Storage Systems tree and select Logical Devices. On the LDEVs tab, click Create LDEVs.

• Expand the Storage Systems tree and select Logical Devices. Click Actions > Logical Device > Create LDEVs to open the window.

For the Pools window in Storage Navigator:

• Expand the Storage Systems tree and select Pools. On the Virtual Volumes tab, click Create LDEVs.

• Expand the Storage Systems tree and select Logical Devices. Click Actions > Logical Device > Create LDEVs to open the window.

2. From the Provisioning Type list, confirm Dynamic Provisioning is selected.

If not, select Dynamic Provisioning from the list.

3. From the Multi-Tier Pool field, select Enable when you create the V-VOL for Dynamic Tiering, and select Disable when you do not create one.

If no pool is set to Enable in Dynamic Tiering, Disable is fixed.

4. Select the pool according to the following steps.

1. From the Drive Type/RPM list in Pool Selection, select the data drive type and RPM.

2. From the RAID level list, select the RAID level.

3. Click Select Pool.

The Select Pool window appears.

4. In the Available Pools table, select a pool.

 You can specify a pool when creating DP-VOLs if the pool has a status of one of the following:

• Normal status

• Exceeded Threshold status

• In progress of pool capacity shrinking

You can select only one pool. When Enable is selected in step 6, the Dynamic Tiering-pools appear, and when Disable is selected, only the non-Dynamic Tiering-pools appear.

Perform the following if necessary:

• Click Filter to open the menu, specify the filtering, then Apply.

• Click Options to specify the units of pools or the number of rows to be displayed.

5. Click OK.

The Select Pool window closes. The selected pool name appears in Selected Pool Name (ID), and the total capacity of the selected pool appears in Selected Pool Capacity.

5. If you want to offset the specified LDEV capacity by boundary, change the default Offset Boundary from OFF to ON.

6. In the LDEV Capacity text box, enter the DP-VOL capacity to be created.

You can enter the capacity within the range of figures displayed below the text box. You can enter the number with 2 digits after decimal point. You can change the capacity unit from the list.

7. In the Number of LDEVs text box, enter the number of LDEVs to be created.

You can enter the number of LDEVs within a range of the figures displayed below the text box.

8. In the LDEV Name text box, enter the DP-VOL name.

In the Prefix text box, enter the alphanumeric characters, which are fixed characters of the head of the DP-VOL name. The characters are case-sensitive.

In the Initial Number text box, type the initial number following the prefix name, which takes up to 9 digits.

You can enter up to the 32 characters including the initial number.

9. Click Option.

10. In the Initial LDEV ID field, make sure that LDEV ID is set.

To confirm the used number and unavailable number, click View LDEV IDs to display the View LDEV IDs window.

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).

11. From the Cache Partition list, select CLPR.

12. From the MP Unit list, select an MP unit.

Select an 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.

13. From the Tiering Policy field, select the tiering policy to be used by the LDEVs. If you assign a specific tiering policy, select any policy. All(0) is selected by default. You can change a level from Level1(1) to Level5(5) or from Level6(6) to Level31(31). You can specify the function when the Multi-Tier Pool is enabled.

14. From the New Page Assignment Tier list, select a new page assignment tier. You can select from levels High, Middle, and Low.

You can specify the function when the Multi-Tier Pool is enabled.

15. In the Relocation Priority option, select a priority.

To relocate the LDEV preferentially, set Prioritize. You can select Default or Prioritize. You can specify this function when the Multi-Tier Pool is enabled.

16. If necessary, change the settings of the V-VOLs.

You can change the following settings:

• Changing the LDEV settings

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

17. If necessary, delete a row from the Selected LDEVs table.

Select a row to be deleted, then click Remove.

18. Click Add.

The created V-VOLs are added to the right Selected LDEVs table. If invalid values are set, an error message appears.

The Provisioning Type, Pool Selection, Drive Type/RPM, RAID Level, LDEV Capacity, and Number of LDEVs field must be set. If these required items are not registered, you cannot click Add.

19. Click Finish.

The Confirm window appears.

To continue the operation for setting the LU path and define LUN, click Next.

20. In the Task Name in the text box, enter the task name.

You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. "yymmdd-window name" is entered as a default.

21. Click Apply.

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

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