Setting I/O control limits

Ops Center Analyzer User Guide
Version
11.0.x
Audience
anonymous
Part Number
MK-99ANA002-06

Set I/O control limits on volumes associated with a consumer. Use this procedure to set new or modify current I/O tasks.

  • You must be logged on as a user with StorageOps permissions.
  • The Server Priority Manager function must be enabled in the storage system.
  • The connection between Ops Center Analyzer and Ops Center Automator is set with SSL communication.
  • Check for existing Server Priority Manager settings in the I/O operations tab after you search for target volumes. You can see in the resulting list of volumes existing Server Priority Manager upper limit settings. If another administrator has set upper limits through Server Priority Manager at the volume level, running I/O control tasks in Ops Center Analyzer will overwrite the Server Priority Manager settings on the target volumes. However, if an upper limit has been set in Server Priority Manager at the port or WWN level, the I/O control task submitted on Ops Center Analyzer will not overwrite the previous Server Priority Manager upper limit setting.
  • Review the list of upper limit tasks in the Operations > History > History tab, to verify whether any active tasks are in progress for the same target volumes for which you want to set I/O controls. If there are any tasks with the status (In Progress), wait for the task to complete (Complete) before you set new I/O control settings.
  • The maximum number of WWNs associated with a target volume is 32. You cannot set upper limits on volumes that exceed this number.
  1. From the Operations tab, search for and select the volumes, and click Set IO Control. Alternatively, if you are troubleshooting a performance bottleneck in the Analyze Shared Resources window, select the target volumes, and click Set IO Control.
    Note: If you are modifying the Target Volumes list, click Remove Volumes. A window opens where you can add or remove volumes from the Set IO Control task.
  2. In the Set IO Control window, make the following selections:
    1. In Upper Limit Setting, select ON.
    2. In Collective Settings, select the metric and enter the limit in Upper limit for each volume.
    3. Enter a task name and description, and then click Next.
      A default task name based on the date and time is automatically assigned: yyyymmdd_hhmm_IOControlSettings.
  3. In Confirm the settings, review the information and click Submit. Confirm the status of the task in the History tab by selecting View task status.
    Tip: Ops Center Analyzer does not automatically show the progress of the I/O control task. If the I/O control task does not appear on the History tab, click Update Status.


    In Progress
    The I/O control task is submitted, but the upper limit setting is not in effect.
    Completed
    The I/O control tasks is complete, and the upper limit setting is in effect.
    Note: If you submit the I/O control task through a script, the status is Executed instead of Completed.
    Not Completed
    The I/O control task is cancelled. The upper limit is not set.
    Note: When you delete the volume of a storage system, the volume does not display in the I/O control task details.