Viewing Usage Statistics On Data Recovery And Reconstruction Processors - Hitachi MK-96RD617-08 User Manual

Viewing Usage Statistics on Data Recovery and Reconstruction
Processors
Performance Monitor tracks data recovery and reconstruction processors
(DRRs) and lets you view the average and the maximum usage rate in a
specified period. Performance Manager also displays a graph illustrating
changes in DRR usage within that period.
To view usage statistics about DRRs:
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 the storing period of statistics from
longrange and shortrange for display.
For details on the types of storing period of statistics, see Understanding
Statistical Storage Ranges.
When you view usage statistics about DRRs, the items displayed in the list
by selecting longrange and shortrange are the same.
4. In the tree, double-click the ACP folder.
5. Click DRR from below the ACP folder.
The list on the right displays usage statistics about DRRs. The displayed
statistics are the average and the maximum usage rates for the period
specified in the From and To boxes.
Note: 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).
6. If you want to display a graph illustrating changes in usage rate for DRRs,
select the desired DRRs 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 5-9
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Example of DRR Usage Rates Displayed in the List
Performance Monitor Operations 5-21