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Viewing Usage Statistics on External Volume Groups
Performance Monitor monitors external volume groups and lets you view the
usage statistics of external volume groups in a specified period. Performance
Monitor also displays a graph illustrating changes in the usage statistics of
external volume groups within that period.
You can view the usage statistics about external volume groups only when you
select shortrange for the storing period of statistics.
To view usage statistics about external volume groups:
1. Ensure that the Performance Management window is displayed.
2. In the tree, click the Physical tab.
3. In the list above the tree, select shortrange for the storing period of
statistics.
If you select longrange, no statistics appears in the list.
4. In the tree, select the External Group folder.
The list on the right displays usage statistics about external volume groups.
The displayed statistics are the usage statistics for the period specified in
the From and To boxes.
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 illustrating changes in usage statistics for external
volume groups, select the desired external volume groups in the list and
then click Draw.
Note: The range of monitoring and the gathering interval affects the time
period represented by a graduation on the horizontal axis.
Figure 5-5
5-14
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Example of Usage Statistics of an External Volume Group
Usages Displayed in the List
Performance Monitor Operations
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