Gauges Creating a gauge Creating a performance database purge task

Multiple Device Manager (MDM) gauges are graphical and tabular presentations of performance data and performance exceptions that you define. You can create, modify, and delete gauges, and you can display information about a specific gauge.

Gauge types

Gauges are saved in the Performance Manager database and retrieved upon request. When you request data pertaining to a defined gauge from Performance Manager, Performance Manager builds a query to the database, retrieves and formats the data, and returns it to you. Performance Manager supports two 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. The maximum and minimum values of the sampling frequency depend on the device type.
Exception
The exception-type gauges present a count of warning and critical thresholds exceeded for each of the thresholds that are enabled. An exception occurs when a measurement from a collection of 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. The types of exceptions that are reported depend on the device type. With an expanded view, you can see information about each exception occurrence such as the time, subcomponent identification, and the actual value of the metric when the exception occurred.
Related topics Creating a gauge Creating a performance database purge task

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