NEC Storage Performance Monitor/Optimizer User Manual page 111

Chapter 6 Operation of Performance Optimization Function (GUI)
Area
Selects a time range of Busy Ratio Graphed on screen. A range is specified by
hours (3/6/12/24), days (1 to 31), or weeks (1 to 4). Setting is allowed within a
Graph scale setting area period specified by the target period area on the Busy Ratio Graph dialog. Upon
activation of the Busy Ratio Graph screen, all ranges specified for the target
period are displayed on one screen.
Fluctuations of Busy Ratios of RANKs or logical disks are displayed in graphs.
A maximum of 8 graph lines are displayed.
Graph display area
Displays the items listed below:
Legend display area
Upon activation of the Busy Ratio Graph screen, the Busy Ratio Graphs all ranges specified for target periods on
one screen. For changing graph scale, specify a range to be displayed on one screen (hours(3/6/12/24), days (1
to 31), or weeks (1 to 4)) and then click the [Apply] button.
If system configuration is changed within a target period (including movement of logical disks), the graph lines
become discontinuous. The average/maximum Busy Ratios after a configuration change are calculated on the
basis of the system configuration after the changes. If configuration change is performed for two or more times,
the average/maximum Busy Ratios are displayed on the basis of configuration after the latest change. However,
the change occurs at the end of or after the target period, "***" is displayed for average/maximum Busy Ratios.
Table 6-13 Description of The Busy Ratio Graph screen
Vertical axis
Indicates Busy Ratio
Horizontal axis
Indicates target period. (period indicated by markings is variable by value
of Graph scale setting area)
Horizontal axis label
Indicates graph display time. Display intervals by a label are as follows:
1-hour period : 20-minute interval
2-hour period : 30-minute interval
3-hour period or longer: Interval variable by value specified in Graph scale
setting area
Number
Indicates icons and numbers of RANKs or logical disks
LD Name
Indicates logical disk name. Displayed only when Busy Ratio of logical
disks are shown.
Average Busy Ratio [%]
Indicates an average Busy Ratio within the target period.
Maximum Busy Ratio [%]
Indicates a maximum Busy Ratio within the target period.
Maximum Busy Ratio Detection time
Indicates time when a maximum Busy Ratio was detected.
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Description