Creating Dynamic Provisioning pools by selecting pool-VOLs manually

You can use Storage Navigator to create a Dynamic Provisioning pool with manually selected pool-VOLs.

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 select Pools.

  2. In the Pools window, click Create Pools.

  3. From the Pool Type list, select Dynamic Provisioning.

  4. For Multi-Tier Pool, select Disable.

  5. If you plan to add external volumes larger than 4 TB to this pool, select Enable for Data Direct Mapping.

  6. For Pool Volume Selection, select Manual.

  7. Select pool-VOLs as follows:

    1. From the Drive Type/RPM list, select the desired data drive type and RPM.

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

      If you selected External Storage for Drive Type/RPM, a hyphen (-) is displayed and you cannot select the RAID level.

    3. Click Select Pool VOLs.

      The Select Pool VOLs window opens.

    4. In the Available Pool Volumes table, select the pool-VOLs to be associated with the pool, and then click Add. You can add up to 1,024 volumes to a pool.

      To set another tier rank for an external volume, select the desired tier rank from External LDEV Tier Rank and click Add.
      Note
      • LDEVs that belong to a parity group with accelerated compression enabled can be assigned to only one pool.
      • We recommend that LDEVs that belong to parity groups with accelerated compression enabled and LDEVs that belong to parity groups with accelerated compression disabled do not coexist in the same pool.
      Tip
      • To apply filter conditions to the table, click Filter, specify the desired conditions, and then click Apply.
      • To select all pool-VOLs in the table, click Select All Pages. To cancel the selection, click Select All Pages again.
      • To change the capacity unit or the number of rows to view, click Options.

    5. In the Select Pool VOLs window, if the selected pool-VOLs have no issues, click OK.

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

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

  9. Click Options.

  10. 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.

  11. 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).
    Caution If you are creating a pool comprised of pool volumes that belong to accelerated compression-enabled parity groups, you can create a DP-VOL with a capacity larger than the pool capacity, and writing is assured even if the subscription limit is defined to 100% or less. In this case, the free area of the pool must be monitored.

    This is not a requirement for monitoring the free area of the pool, but if you want to specify the pool subscription limit, specify a value lower than the value calculated by the following formula: 

    100% * (Pool physical capacity / Pool capacity)

  12. 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.

  13. 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.

  14. 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 split a Thin Image pair in the depleted pool, the operation fails and the pair is suspended by error (PSUE).

  15. 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. And 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. 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. And 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.

  17. Click Add.

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

    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.

  18. 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.

  19. Click Finish.

  20. 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.

  21. Click Apply.

    The create pool task is registered. If Go to tasks window for status is selected, the Tasks window opens automatically.
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.