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change the date and time in From and To boxes, use the arrow buttons and the sliders (for

details, see “Auto LUN Window, Physical Tab” on page 29).

6. To display a graph that illustrates changes in usage rate for external volumes, select the desired

external volumes in the list and then click the Draw button.

Note:

The range of monitoring and the gathering interval affects the time period represented by

a graduation on the horizontal axis.

Figure 23 An ExampleofExternalVolumeUsage RatesDisplayed

The list displays the following items:

•

: When the green checkmark icon is displayed on the left of a external volume, the graph

illustrates changes in usage rate for the external volume.

• ExLDEV: This column indicates external volumes. The number on the left of the ﬁrst colon from

the left is the LDKC number. The number on the left of the second colon from the left is the CU

image number. The number on the right of the second colon is the LDEV number. The symbol # at

the end of numbers indicates the volume is an external volume.

• Emulation: This column indicates device emulation types.

• Response Time: This column indicates the time for replying from an external volume when I/O

accesses are made from storage system to the external volume. The unit is milliseconds. The

averageresponsetimeinthe period speciﬁed at Monitoring Term is displayed.

• Trans.: This column indicates the sizes of data transferred between the storage system and the

external volume in one second.

• CLPR: This column indicates numbers and names of CLPRs corresponding to each external volume

group which the external volume belongs to, in the format CLPR-number:CLPR-name.For details

on CLPRs, see HP StorageWorks XP24000 Disk/Cache Partition User’s Guide.

Viewin

g Usage Statistics about Channel Processors (CHPs)

Perfor

mance Monitor monitors channel processors in each channel adapter and lets you view the average

and th

e maximum usage rate in a speciﬁed period. Performance Monitor also displays a graph that

illustrates changes in channel processor usage within that period.

To view usage statistics about channel processors:

1. Ensur

e that the Auto LUN window is displayed.

2. In the tree, click the Physical tab.

3. In the drop-down list above the tree, select the storing period of statistics from longrange and

shortrange for display.

For details on the types of storing period of statistics, see

“Und

erstanding Statistical Storage Ranges”onpage15.

When you view usage statistics about channel processors, the items displayed in the list by

selecting longrange and shortrange are the same.

4. In thetree, do oneofthe following:

•To v

iew usage statistics about all the channel processors in your storage system, select the

Cli

ent-Host Interface Processor (CHIP) folder.

• To view usage statistics about channel processors in a channel adapter, double-click the

Client-Host Interface Processor (CHIP) folder and then select the desired channel adapter.

The list on the right displays usage statistics about the channel processors (Figure 24 on page 56).

The displayed statistics are the average and the maximum usage rates for the period speciﬁed

the From and To boxes.

XP24000 Performance Monitor User's Guide

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