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Response Time: This column indicates the time for replying from the LU
paths when I/O accesses are made from the host to the LU paths. The unit
is milliseconds. The average response time in the period specified at
Monitoring Term is displayed.
Viewing LU Paths Transfer Rates
Performance Monitor monitors LU paths and measures transfer rates (that is,
the size of data transferred in one second).
To view transfer rates:
1. Ensure that the Performance Management window is displayed.
2. Select the Port-LUN tab.
The tree displays a list of ports on the storage system.
3. Select MB/s from the list on the right side of the window.
4. In Monitoring Term, do one of the following:
– To view the transfer rate in real time, you must select the Real Time
option, specify the number of recent collections of statistics which
should be displayed in the graph, and then click Apply.
– To view transfer rates for a certain period of time in the last 24 hours,
you must select the From option, change the date and time in the
From and To boxes, and then click Apply. Use the arrow button and
the sliders when you change the date and time in the From and To
boxes.
For details on the Real Time option and the From option, see Port-LUN
Tab of the Performance Monitor Window.
5. In the tree, double-click a port (for example,
host group (
The LUN icon (
6. Select LUN.
The list on the right displays a list of LU paths and transfer rates.
7. If you want to display a graph to find out how the transfer rate has been
changed, take the following steps:
a. In the list, select one or more LUNs.
b. Click Draw.
Note: If the graph does not display changes in the transfer rate (for
example, if the line in the graph runs vertically), it is recommended that
you change the value in the Chart Y Axis Rate list. For example, if the
largest value in the list is 200 and the value in Chart Y Axis Rate is 100,
you should select a value larger than 200 from Chart Y Axis Rate.
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
).
) appears.
Performance Monitor Operations
or
) and then select a
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