4-22 Using the Performance Manager GUI
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
• When Monitoring Switch is Enable, Performance Monitor is monitoring the storage system (a Disable setting indicates that the system is not
being monitored).
• Gathering Interval indicates that the statistics are collected at the
interval displayed here. If the number of the CUs to be monitored is 64 or
less, the value between 1 and 15 appears as a gathering interval by
minutes. For example, if 1 min. is displayed, the information obtained
every one minute is displayed in the list and the graph. In case 65 or more
CUs are monitored, the statistics are displayed every 5, 10 or 15 minutes.
• The list on the right of Monitoring Data indicates storing period of
statistics (monitoring data). The statistics displayed in the WWN tab are
stored only in short range, therefore, shortrange is displayed in this list
and you cannot change it. The range of monitoring data that can be
displayed in the window is between 8 hours and 15 days depending on the
gathering interval.
For details on the types of storing period of statistics, see Understanding
Statistical Storage Ranges.
For details on the relationship between collection interval and the storing
period of the statistics, see Monitoring Options Window.
• Monitoring Term let you narrow the range of statistics that should be
displayed in the window.
The starting and ending time for collecting statistics are displayed on both
sides of the slide bar. Performance Monitor stores the monitoring data
between these times, and you can specify the desired term within this
range. Statistics for the specified term will be displayed in list and graph
formats.
For example, if you want to view statistics within the range of 10:30 July 1
2007 to 10:30 July 2 2007, you set 2007/07/01 10:30 to the From box, set
2007/07/02 10:30 to the To box, and then click Apply.
To set a date and time in From and To, do either of the following:
– Move the slider to the left or to the right.
– In the text box, select the number that you want to change. Next, click
the upward or downward arrow button.
When you specify dates and time in From and To, Performance Monitor
calculates the length (in minutes) of the specified period and displays the
calculated length. When calculating the length in minutes, Performance
Monitor rounds up the fraction.
Note: From and To are unavailable if the monitoring data (that is,
obtained statistics) is not stored in the storage system.
• The Real Time option lets you view statistics in real-time mode, where
statistics are updated at a gathering interval you specify between 1 and 15
minutes.