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The Busy Ratios of RANKs and logical disks are displayed on the screen. The displayed values are average values
during the specified period. This period is called an analysis period.
The time zone in which the disk array is used depends on the business system. The following is the examples.
The time zone in which the disk array is used is limited to a specific time zone for a day.
The business peak comes on weekends which increase the load on the disk array.
The business peak comes at the end of the month which makes the load on the disk array highest.
When the use of the disk array is limited to a specific time zone or period, or when the period during which it is
expected that there will be a high load on the disk array, an analysis period must be adjusted according to such a time
zone or period.
This adjustment allows displaying appropriate Busy Ratios and appropriate analysis for the business
system operations.
This section describes the dialog for specifying an analysis period and the specifying procedures.
(1) Displaying Analysis Property dialog ([Analysis Period] tab)
Select [Setting] [Analysis Property] menu on the main screen of the performance optimization function. On
the displayed Analysis Property dialog box, select [Analysis Period] tab that displays an area for specifying an
analysis period. A period within the time including past 1 month can be specified for an analysis period. The
following shows the default values for an analysis period.
Initial values for the analysis period
Period to Calculate:
Days of the Week to Calculate:
Time Zone to Calculate:
Figure 6-8 shows an example of displayed Analysis Property dialog ([Analysis Period] tab), and Table 6-8
provides descriptions of the areas in the dialog.
Chapter 6 Operation of Performance Optimization Function (GUI)
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Starting from one month before to the present
All days of the week
24 hours from 0:00
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