Administrator Guide
Viewing real-time graphical performance monitor data
You can view real-time graphical performance as a single graph or as a dashboard that shows six graphs on one screen.
A real-time performance monitor graph plots a single performance metric over time for up to five objects. The x-axis of the graph
represents time. The y-axis of the graph represents the metric value. When the metric value exceeds 99,999, it displays in thousands (K),
beginning with 100K until the number reaches 9999K, at which time it displays in millions (M). For amounts greater than 9999K but less
than 100M, the value displays in tenths (for example, 12.3M).
1. To view the dashboard, in the Array Management Window (AMW), click the Performance tab.
The Performance tab opens showing six graphs.
2. To view a single performance graph, in the Array Management Window (AMW), select Monitor > Health > Monitor Performance >
Real-time performance monitor > View graphical.
The View Real-time Graphical Performance Monitor dialog opens.
3. In the Select metric drop-down list, select the performance data that you want to view.
You can select only one metric.
4. In the Select an object(s) list, select the objects for which you want to view performance data. You can select up to five objects to
monitor on one graph.
Use Ctrl-Click and Shift-Click to select multiple objects. Each object is plotted as a separate line on the graph.
NOTE: If you do not see a line that you defined on the graph, it might be overlapping another line.
5. When you are done viewing the performance graph, click Close.
Customizing the performance monitor dashboard
The dashboard on the Performance tab initially contains five predefined portlets and one undefined portlet. You can customize all of the
portlets to display the performance data that is most meaningful to you.
1. In the Array Management Window (AMW), select the Performance tab.
2. Do one of the following actions:
• Double-click the portlet that you want to change.
• Or, click the Maximize icon on the portlet that you want to change.
• In Portlet 6, select the Create new real-time performance graph link. This option is only available if Portlet 6 is undefined.
The View Real-time Graphical Performance Monitor dialog is displayed.
3. In the Select metric drop-down list, select the performance data that you want to view.
You can select only one metric at a time. If you opened the dialog from an existing graph, the current metric and object are
preselected.
4. In the Select an object(s) list, select the objects for which you want to view performance data.
You can select up to five objects to monitor on one graph. Use Ctrl-Click and Shift-Click to select multiple objects. Each object is
plotted on a separate line on the graph.
NOTE: If you do not see a line that you defined on the graph, it might be overlapping another line.
5. To save the changed portlet to the dashboard, click Save to Dashboard, and then click OK.
The Save to Dashboard option is not available if you did not make any changes, if both a metric and an object are not selected, or if
the dialog was not invoked from a portlet on the dashboard.
The dashboard on the Performance tab updates with the new portlet.
6. To close the dialog, click Cancel.
Specifying performance metrics
You can collect the following performance data:
• Total I/Os – Total I/Os performed by this object since the beginning of the polling session.
• I/Os per second – The number of I/O requests serviced per second during the current polling interval—also called an I/O request
rate.
• MBs per second – The transfer rate during the current polling interval. The transfer rate is the amount of data in megabytes that can
be moved through the I/O data connection in a second—also called throughput.
About your MD Series storage array
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