HP StorageWorks P9000 Performance Advisor Software v5.3 User and Troubleshooting Guide (T1789-96322, August 2011)

Total Backend I/O Rate First Top 8 LDEVs report
The Total Backend I/O Rate First Top 8 LDEVs report displays in a chart format, the real backend I/O
rate of the busiest eight LDEVs. This can be compared to the potential maximum throughput of the
hardware. The maximum throughput varies depending on RAID level and disk mechanism type and
other factors such as the size of the individual I/Os. “Total Backend I/O Rate First Top 8
LDEVs” on page 418 displays a sample Total Backend I/O Rate First Top 8 LDEVs report for the XP1024
Disk Array.
Figure 41 Total Backend I/O Rate First Top 8 LDEVs
.
Total Backend I/O Rate First Top 8 RAID Groups report
The Total Backend I/O Rate First Top 8 RAID Groups report displays in a chart format, the real backend
I/O rate for the busiest eight RAID groups. This can be compared to the potential maximum throughput
of the hardware. The maximum throughput varies depending on RAID level, disk mechanism type,
and other factors such as the size of the individual I/Os. “Total Backend I/O Rate First Top 8 Array
Groups” on page 419 displays a sample Total Backend I/O Rate First Top 8 RAID Groups report for
the XP1024 Disk Array.
Sample reports418