Hp XP Performance Advisor Software Manuel d'utilisateur Page 133

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Figure 59 To
tal I/O Rate Detail
Sequential
I/Os are when data is read from or written to consecutive addresses. Random I/Os are when
applications address non-consecutive blocks of data. CFWs are a special class of I/Os generated by
HP’s Continuous Access remote mirroring software.
NOTE:
If there are no data points available for the dates selected, blank chart will be displayed. If all the data
values are
zero for the dates selected, a chart with a horizontal line along X axis will be displayed in
the center.
Read/Write Ratio report
The Read/Write Ratio report shows in a chart format, the ratio of read a ctivity to write activity, over the
entire data collection period. This is for both sequential and random read/write activity. Read/Write
Ratio shows a samp le Read/Write Ratio report for XP1024.
HP StorageWorks Performance Advisor XP Software user guide
133
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