Read/Write Ratio Report - HPE XP7 User Manual

Figure 14: Total I/O Rate Detail
The sequential frontend I/Os are when data is read from or written to consecutive addresses. The random
frontend I/Os are when applications address non-consecutive blocks of data. CFWs are a special class of
I/Os generated by HPE's XP7 Continuous Access Remote Mirroring software.
NOTE: If there are no data points available for the dates selected, blank chart is displayed. If all the
data values are zero for the dates selected, a chart with a horizontal line along X axis is displayed in
the center of the chart.

Read/Write Ratio report

The Read/Write Ratio report displays in a chart format, the ratio of read activity to write activity, over the
entire period. It is for both sequential and random read, or write activity. Figure 15: Read/Write Ratio on
page 307 displays a sample Read/Write Ratio report for a P9500 Disk Array.
Figure 15: Read/Write Ratio
For example, the data point of X on the graph indicates X% read activity and (100-X)% of write activity.
Read/Write Ratio report 307