NEC Storage Performance Monitor/Optimizer User Manual page 59

Port
Displays the name of ports, by disk array, for which a threshold is specified for each monitored item, such as
I/O Density, Transfer Rate, Average Transfer Length, and Average Response Time. The port that has a value
which has exceeded the threshold is displayed along with the "**" marks appended to the name.
Logical disk
Displays the number of logical disks, by disk array, for which a threshold is specified for each monitored item,
such as I/O Density, Transfer Rate, Average Transfer Length, Average Response Time, Read Hit Ratio and
Write Hit Ratio. The logical disk that has a value which has exceeded the threshold is displayed along with
the "**" marks appended to the number.
Physical disk
Displays the number of physical disks, by disk array, for which a threshold is specified for each monitored item,
such as Busy ratio, I/O Density, Transfer Rate, Average Transfer Length, and Average Response Time. The
physical disk that has a value which has exceeded the threshold is displayed along with the "**" marks
appended to the number.
On the Threshold specified items dialog, selecting a device with threshold indicated and clicking [Delete] button
deletes the specified threshold value.
(8) Thresholds exceeding state clearing
When you click [Threshold Monitoring] and then click [Reset Threshold Excess] on the Numeric Table screen,
the threshold exceeding states which have occurred to the disk array specified in the combo box are all cleared.
The marks indicating the threshold exceeding state are removed and the threshold monitoring operation resumes
with regard to the items for which a threshold has been specified. Before this operation is carried out, the
Confirm Clear of Threshold Exceeding State dialog appears.
Clicking the [OK] button will clear the threshold exceeding state and then close the dialog box. Clicking the
[Cancel] button will close the dialog box without clearing the threshold exceeding state.
Chapter 3 Operations of Performance Monitoring Function
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