HP XP Array Manager Software - Manual (Page 41)

Description Item
The list displays statistics about disk access performance (for example, I/O rate, transfer
rate, read hit ratio, write hit ratio, and average response time). For details on the list
contents, see “
Monitoring Hard Disk Drives ” on page 76.
If you select connected parity groups in the tree, the list displays statistics about disk
access performance for all the connected parity groups.
The list displays up to a maximum of 4,096 resources at a time. If the number of resources
exceeds 4,096, use Previous and Next to display the remaining resources.
When you select a folder icon such as Box 1 or Box 3, the concatenated parity group
icon is displayed in a list. The only parity group ID displayed will be that of the group
at the top of the concatenated parity groups. The icon used for concatenated parity
groups is the same as a regular parity group icon. There is no specific icon for
concatenated parity groups.
List
This area displays the page numbers in N/M format, where N indicates the number of
the current page and M indicates the total number of pages.
• Previous: Click to display the previous 4,096 resources.
• Next: Click to display the next 4,096 resources.
Page
Click to display a line graph that illustrates changes in the I/O rate, the transfer rate,
and so on. The graph can display up to eight lines simultaneously.
Draw
Illustrates changes in the I/O rate, the transfer rate, etc. The vertical axis indicates the
usage rates (in percentage). The horizontal axis indicates dates and/or times.
If you select connected parity groups in the tree, the graph illustrates changes in disk
access performance (for example, the I/O rate and the transfer rate, see ) for all the
connected parity groups.
Before clicking Draw, use the list at the right corner of the list (just below the list for
specifying the type of statistics, see
Figure 10 ) to specify the type of information you
want displayed in the graph. The items that can be selected in the list changes depending
on the type of statistics you selected. Some items can be selected only when you select
I/O rate (IOPS) or the transfer rate (MB/s). The items you can select in the list and the
corresponding type of statistics are shown in
Table 3 .
When you draw a graph, use the Detail check box to illustrate the desired information
and the Chart Y Axis Rate list to arrange the graph as you like. Use the Chart Y Axis
Rate list to select the highest value of the Y-axis (the vertical axis) of the graph (see
Figure
11 ).
If you select Detail and then click Draw, the graph displays detailed statistics as explained
in
Table 4 . The information in the graph depends on the item selected in the list on the
right.
Line graph ( Figure
11 )
XP24000/XP20000 Performance Monitor User Guide 41