Read/write ratio report – HP XP Performance Advisor Software User Manual

Page 363

Text mode
Original mode

Figure 41 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 HP'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.

“Read/Write

Ratio” (page 364)

displays a sample Read/Write Ratio report for a P9500 Disk Array.

Report types 363