HP XP Array Manager Software - Manual (Page 35)

Figure 9 The LDEV Tab of the Auto LUN Window
When the LDEV tab is active, the Auto LUN window contains the following items:
• 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 displays a number between 1 and 15 to indicate how often data collection is
performed. If the number of the CUs to be monitored 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 are 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 drop-down list on the right of Monitoring Data indicates storing period of statistics (monitoring
data). The statistics displayed in the LDEV tab are stored only in short range, therefore, shortrange
is displayed in this drop-down 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 ” on page 15.
For details on the relationship between collection interval and the storing period of the statistics,
see “ Monitoring Options Window ” on page 42.
• Monitoring Term lets you narrow the range of statistics that should be displayed in the window.
Starting and ending times 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, as Statistics for the specified term will be displayed the target of
display in lists and graphs formats.
For example, if you want to view statistics within the range of 10:30 July 1 2006 to 10:30 July
2 2006, you set 2006/07/01 10:30 to the From box, set 2006/07/02 10:30 to the To
box, and then click the Apply button.
To set a date and time to the From and To boxes, 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.
XP24000 Performance Monitor User's Guide 35