Creating Dynamic Provisioning pools by selecting pool-VOLs automatically

Use this procedure to create a Dynamic Provisioning pool by selecting pool-VOLs automatically.

Before you begin

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

Procedure

  1. Click Storage Systems, expand the Storage Systems tree, and click Pools.

  2. Click Create Pools.

  3. In the Create Pools window, select Dynamic Provisioning for the Pool Type.

  4. For Multi-Tier Pool, select Disable.

  5. For Pool Volume Selection, select Auto.

    NoteIf you are creating a pool that will contain LDEVs in a parity group with accelerated compression enabled, you must select Manual.

  6. Select pool-VOLs as follows:

    1. For Resource Group, select the resource group name of the pool-VOL.

    2. For Performance, select the performance of the pool.

    3. In Total Capacity, specify the capacity of the pool.

      Values are displayed in Total Pool Volumes and Total Capacity. These values are greater than the specified value of the pool capacity.

    4. If you want to change the pool configuration that is automatically selected, click Change Pool Configuration to open the Change Pool Configuration Pattern window.

      In the Pool Configuration Patterns table, select the desired pool configuration, click Select, and then click OK.
      Note
      • You can select the pool configuration on a parity group basis.
      • The priority of the pool configuration is determined by these conditions:

        Priority 1: There is no free space in the parity group and one LDEV exists in the group.

        Priority 2: There is no free space in the parity group and multiple LDEVs exist in the group.

        Priority 3: There is free space in the parity group and multiple LDEVs exist in the group.

      • The following items are not displayed in the Pool Configuration Patterns table:

        Parity groups with LDEVs that cannot be used as pool-VOLs.

        Pool configuration patterns that contain more than 1,024 LDEVs.

      The information in the Pool Configuration Patterns table is applied to Total Pool Volumes and Total Capacity in the Create Pools window.

  7. In Pool Name, enter the desired name for the pool.

  8. Click Options.

  9. In Initial Pool ID, type the number of the initial pool ID (from 0 to 127).

    If you specify a pool ID that is already used, the smallest available ID is displayed by default instead of the ID you specified. If a pool ID is unavailable, no number is displayed.

  10. In Subscription Limit, enter the desired subscription limit (%) for the pool (integer value from 0 to 65534). To set the subscription limit to unlimited, leave this field blank (do not enter a number).

    The subscription limit is the ratio (%) of the total DP-VOL capacity that has been configured to the total capacity of the pool. When the subscription limit is set, you cannot configure another DP-VOL if the new DP-VOL capacity would cause the subscription limit to be exceeded.
    NoteThe subscription limit for a Thin Image pool is unlimited. Therefore, if the pool will contain Thin Image pairs and snapshot data, set unlimited (do not enter a number).

  11. In Warning Threshold, enter the desired Warning Threshold (%) for the pool (integer value from 1 to 100, default = 70%).

    If the pool used-capacity is equal to or greater than the Warning Threshold, a service information message (SIM) is issued by the storage system.

  12. In Depletion Threshold, enter the desired Depletion Threshold (%) for the pool (integer value from 1 to 100, default = 80%). Enter a value that is equal to or greater than the Warning Threshold.

    If the pool used-capacity is equal to or greater than the Depletion Threshold, a SIM is issued by the storage system.

  13. In Suspend TI pairs when depletion threshold is exceeded, select Yes or No.

    This option enables you to stop the Thin Image pair split process and prioritize the writing process to DP-VOLs when the free capacity of a Dynamic Provisioning pool that contains Thin Image pairs and snapshot data is depleted. If you select Yes, SIM code 62Exxx is output when the pool used capacity exceeds the depletion threshold. After this SIM code is output, if you attempt to split a Thin Image pair, the operation fails and the pair is suspended by error (PSUE).

  14. In Protect V-VOLs when I/O fails to Blocked Pool VOL, select Yes or No. If Yes is selected, when the pool-VOL is blocked, DP-VOL is protected from reading and writing requests. At the same instant, the access attribute of the DP-VOL is changed to the Protect attribute.

    This option applies only to DP-VOLs. It does not apply to V-VOLs used by Thin Image pairs.

  15. In Protect V-VOLs when I/O fails to Full Pool, select Yes or No. If Yes is selected, when the pool usage reaches the full size, DP-VOL is protected from reading and writing requests. At the same instant, the access attribute of the DP-VOL is changed to the Protect attribute.

    This option applies only to DP-VOLs. It does not apply to V-VOLs used by Thin Image pairs.

  16. Click Add.

    The specified pool is added to the Selected Pools table. If invalid values are set, an error message appears.

    If an item that must be set is not entered or selected, you cannot click Add.

    The Pool Type, Pool Volume Selection, and Pool Name must be set. If these required items are not entered or selected, you cannot click Add.

    To view the detailed properties of a pool in the Selected Pools table, select the pool and click Detail.

    To remove a pool from the Selected Pools table, select the pool, click Remove, and then click OK.

  17. If you want to create DP-VOLs in the new pool at this time, click Next to go to the Create LDEVs window. If the Subscription Limit of the specified pool is set to 0%, an error message is displayed and the Create LDEVs window does not open.

    If you do not want to create DP-VOLs in the new pool at this time, click Finish to go to the Confirmation window.

  18. Check the settings in the Confirmation window, and then enter the task name in Task Name.

    To view the detailed properties of a pool, select the pool and then click Details.

  19. Click Apply.

    The create pools task is registered. If the Go to tasks window for status check box is selected, the Tasks window appears.
Parent Topic
  • Creating pools

    When you create a pool, you select the pool volumes (pool-VOLs) for the pool (manually or automatically) and set options such as the subscription limit and the warning and depletion thresholds for the pool. You can also enable options such as V-VOL protection and data deduplication.