Changing the pool subscription limit

Use this procedure to change the subscription limit of a pool.

NoteIf the pool contains Thin Image pairs and snapshot data, you should set the pool subscription limit to unlimited because the setting of the Subscription Limit for a Thin Image pool is unlimited.

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 Pools.

  3. From the Pools table, select the pool with the threshold you want to change.

  4. Click More Actions, and then select Edit Pools.

  5. In the Edit Pools window, check Subscription Limit, and then type the subscription limit percentage.

    If the subscription limit is blank, then it is disabled, and any number of DP-VOLs can be created regardless of the pool free capacity.

  6. Click Finish.

    The Confirm window appears.
    Caution

    If you are using a pool comprised of pool volumes assigned by 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.

    The pool subscription limit 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)

  7. 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.

  8. Click Apply.

    If the Go to tasks window for status check box is selected, the Tasks window appears.
Parent Topic
  • Thresholds for monitoring pools

    Dynamic Provisioning monitors pool capacity using thresholds. A threshold is the proportion (%) of the used capacity of the pool to the total capacity of the pool, or the proportion (%) of the physical used capacity of the pool to the total capacity reserved for writing of the pool.