Creating a gauge Gauges Modifying a gauge

Perform this task to create gauge definitions for a performance data-collection task. The gauges present selected performance data and performance exceptions as graphical and tabular records.

Prerequisites

Before you can create a performance gauge definition, you must create and run a performance data-collection task for a storage device.

Context

You can create a gauge definition either by completing the Create Gauge panel or by modifying an existing gauge definition, giving it a new name, and saving it as a new definition.

Steps

Perform the following steps to create a gauge for a performance data-collection task:

  1. From the IBM Director Tasks pane, click Multiple Device Manager.
  2. Click Manage Performance.
  3. Drag the Gauges icon from the Director task pane and drop it on a storage device in the Group Contents pane. The Gauges panel opens.
  4. On the Gauge panel, click Create. The Create Gauge panel opens.
  5. On the Create Gauge panel, select the storage device for which you are defining a gauge from the Device list.

    This list displays all devices that are part of a performance data-collection task and that have performance data available.

  6. Click Type. Select one of the following gauge types:
    Performance
    The performance-type gauges present sample-level performance data. The frequency at which performance data is sampled on a device depends on the sampling frequency that you specify when you define the performance collection task.
    Exception
    An exception occurs when a measurement, derived during collection from values sent by a storage device, exceeds a preset value. For each day in a time span that you select, Performance Manager reports the total number of warning- and critical-exceptions for the selected device.
  7. Select a component level if you are defining a gauge for a component (for example, a volume or a managed disk) of the selected device. The component levels are displayed in the selection tree on the left side of the panel.
    Note:Note: The component-level selection tree is disabled for exception gauges.
  8. Select one or more metrics to include in the gauge definition. Only the available metrics for the selected component level are displayed in the Metrics field. Select only metrics that share the same y-axis values (on the display).

    The Unit column in the metrics table helps you identify which of the metrics share y-axis units. If you select metrics with different units, you will see an error message stating that a gauge can contain multiple metrics only when the metrics have the same units.

    Note:Note: The metrics table is disabled for exception gauges.
  9. Select a device in the Components table. The device should be the device that you selected in the Device field (step 5).

    The Component table contains the ID and other information about the component that you selected in step 7.

  10. Type the name of the gauge you are creating in the Name field.
    Note:Note: The gauge name must not contain white space, special characters, or exceed 100 characters in length. To avoid invalid characters assign an alpha-numeric name.
  11. Type a description of the gauge you are creating in the Description field.
  12. Select one of the following options:
    Current performance data
    When you select this option, the current performance data is displayed in the gauge and the Date, Time, and Sample fields are activated.
    Note:Note: This option is disabled for exception gauges.
    Past performance data
    When you select this option, the Date and Time fields are activated.
    Note:Note: For exception gauges, only the Date field is activated.
  13. In the Date field, select the start and end dates of the period for which you want to view performance data. Data will be collected on each day in this range for the data collection window you specify using the Time field.
  14. In the Time field, select the start and end times for each day during the data collection period for which you want to view performance data. Data is collected for this time period on each day within the range you specified in the Date field.
    Note:Note: This field is inactive for both performance and exception gauges.
  15. In the Samples field, select the number of sample intervals that you want to be displayed on the gauge displays.
  16. The Display gauge check box is checked by default. The display gauge is displayed when you click OK. To disable the display, clear the Display gaugecheck box.
  17. Click OK to save your selections. The Create Gauge panel closes, and you are returned to the Gauge Definition panel.

    Alternatively, click Cancel to cancel the gauge definitions.

Result

The Gauge table is updated to include the newly defined gauge.

Related topics Gauges Modifying a gauge

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