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Notes:
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.
If you change the date and time in the From and To boxes and then click
Apply, Performance Monitor recalculates usage rates and updates
information in the list. To change the date and time in From and To
boxes, use the arrow buttons and the sliders (for details, see
Performance Management Window, Physical Tab).
5. To display a graph to find out how the I/O rate has been changed, take the
following steps:
a. In the list, select the parity group(s), the external volume groups, or
the volume(s) that you want.
b. Use the list at the right side of the list to select the type of information
that you want to view in the graph. For details on the information that
can be displayed, see Table 4-1.
c. Click Draw.
A graph appears below the list. The horizontal axis indicates the time.
Caution: If the graph does not display changes in the I/O rate (for
example, if the line in the graph runs vertically), it is recommended that
you change the value in the Chart Y Axis Rate list. For example, if the
largest value in the list is 200 and the value in Chart Y Axis Rate is
100, you should select a value larger than 200 from Chart Y Axis
Rate.
d. To view more detailed information in the graph, use the list to the right
of the list to select the type of information that you want. Next, select
the Detail check box at the lower right of the list and then click Draw.
The detailed graph contents change as described in Table 4-2.
Caution: If more than one parity group or volume is selected in the list,
you cannot select the Detail check box to view detailed information.
I/O rate for parity groups and external volume groups (When the
Subsystem folder is selected):
5-28
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Performance Monitor Operations
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