NEC Storage Performance Monitor/Optimizer User Manual page 45

Chapter 3 Operations of Performance Monitoring Function
The threshold line is displayed on the graph. The line is displayed for time zone from the time the threshold is
set to the time it is unset. When past information is displayed, a threshold line is displayed in the time zone for
which thresholds have been set. When a value exceeded the threshold line, a time line is displayed in a dark
color that shows the time from when a value exceeded the threshold to the time when the Release Threshold
Excess function was executed.
Immediately after display of Time-series Graphs has started, only the latest values of the monitored items are
displayed, and then, the latest values of the monitored items will be plotted at specified time intervals. When
line graphs come to the end of the screen width, they scroll so that the oldest values are out of the screen.
Operating the scroll bar will allow you to see the past information. The past information that can be displayed
varies depending on the setting for Display Refresh Rate. For example, setting 1 for Display Refresh Rate
allows you to see the past information of 24 hours. Setting 6 for Display Refresh Rate allows you to see the past
information of 3 hours.
If viewing many time-series graphs of monitoring items displayed on a screen is difficult, whether to display/hide
time-series graph and displaying order of graphs can be specified for each monitoring item. To specify
display/hide time-series graphs for each monitoring item, select [View] [Customize Time-series Graph] on
menu, and specify whether to display or hide desired monitoring items on the check boxes of the Customize
Time-series Graph dialog. To specify displaying order of graphs, select a desired item on the Customize
Time-series Graph dialog, and move the item by clicking the [Up] or [Down] button. Figure 3-7 shows the
Customize of Graph dialog.
Figure 3-7 Customize Time-series Graph Dialog
If viewing the lines is difficult behind many overlapping time-series graphs of registered items, double-clicking
on the legend for the graph line moves the lines onto the front. Selecting a legend and pressing the Enter key
also moves the lines to the front.
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