Modifying a gauge
Perform this task to modify gauge
definitions for a performance data-collection task.
Prerequisites
Before you can modify a performance gauge definition, you must create and
run a performance data-collection task for a storage device.
Steps
Perform the following steps to modify gauge definitions
for a performance data-collection task:
- From the IBM Director Tasks pane, click Multiple
Device Manager.
- Click Manage Performance.
- Drag the Gauges icon from the Director task pane and drop it
on a storage device in the Group Contents pane. The Gauge panel opens.
- On the Gauge panel, select the gauge to be modified in the Gauges table.
- Click Properties. The Gauge properties panel for
the selected gauge opens.
- Modify the definition for the selected gauge by changing the appropriate
fields in the Gauge properties panel:
- The Device field displays the storage device that
you selected when you defined the gauge.
 | Note: You cannot change
the Device field. |
- The Type field displays the gauge type (performance
or exception) that you selected when you defined the gauge.
 | Note: You cannot change the Type field. |
- The Component table contains the component ID and other information about
the component in the component selection tree.
 | Note: The table is disabled for exception
gauges. |
-
Select one component level if you are changing 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: The component-level selection tree is disabled for exception gauges. |
- Select the metrics that you want to change. 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: The metrics table
is disabled for exception gauges. |
- If you want to create a new gauge definition
from the existing definition, change the name of the gauge in the Name field only.
 | 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. |
- If you entered a new gauge name in the Name field,
change the description of the gauge in the Description field
to describe the new gauge.
- 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: This
option is disabled for exception gauges. |
- Past performance data
- When you select this option, the Date and Time fields are activated. For exception gauges only the Date field is activated.
- In the Date field, select the start and end dates
of the data collection period for which you want to view performance data.
- 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.
 | Note: This field is inactive for both performance
and exception gauges. |
- In the Samples field, select the number of sample
intervals that you want to be displayed on the gauge displays.
- 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.
- Click OK to save your changes to the gauge definition.
The Create Gauge panel closes, and you are returned to the Gauge panel.
Alternatively, click Cancel to cancel the gauge definitions.
Result
The Gauge table is updated to include the the changes to the selected gauge.
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