HP XP Performance Advisor Software - Manual (Page 135)

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.
Total I/O Rate Detail report
The Total I/O Rate Detail report shows in a chart format, the number of Sequential I/O, Random I/O,
and CFW I/O operations per second, over the entire data collection period. Total I/O Rate Detail shows
a sample Total I/O Rate Detail report for XP1024.
Figure 60 Total 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 activity to write activity, over the
entire data collection period. This is for both sequential and random read/write activity. Read/Write
Ratio shows a sample Read/Write Ratio report for XP1024.
HP StorageWorks Performance Advisor XP Software user guide 135