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Figure 12 T

he Port-LUN tab of the Auto LUN Window

When the Po

rt-LUN 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).

• Gatherin

gInterval indicates that the statistics are collected at the interval displayed here. If the

number of

the CUs to be monitored are 64 or less, the value between 1 and 15 appears as a

gathering interval by minutes. For example, if 1min. 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

statist

ics are displayed every 5, 10 or 15 minutes.

• Thedrop-down list on theright of Monitoring Data indicates storing period of statistics (monitoring

data). The statistics displayed in the Port-LUN tab are stored only in short range. The range of

monitoring data that can be displayed in the window is between 8 hours and 15 days depending

on the g

athering interval.

For det

ails on the types of storing period of statistics, see

“Understanding Statistical Storage Ranges”onpage15.

For details on the relationship between collection interval and the storing period of the statistics,

see “Monitoring Options Window” on page 42.

• Monit

oring Term let you narrow the range of statistics that should be displayed in the window.

The st

arting and ending time for collecting statistics are displayed on both sides of the slide bar.

Perfo

rmance Monitor stores the monitoring data between these times, and you can specify desired

term

within this range as the target of display in lists and graphs.

For e

xample, if you want to view statistics within the range of 10:30 July 1 2007 to 10:30 July

22007, youset 2007/07/01 10:30 to the From box, set 2007/07/02 10:30 to the To

box, and then click the Apply button.

To se

t a date and time to the From and To boxes, do either of the following:

• Movethe slider to theleftorto the right.

• In the text box, select the number that you want to change. Next, click the upward or

down

ward arrow button.

When you specify dates and time in From and To boxes, 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:

The From and To boxes are grayed out if the monitoring data (that is, obtained statistics)

is n

ot stored in the storage system.

XP24000 Performance Monitor User's Guide

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