HP StorageWorks XP Performance Advisor Software v4.6 User and Troubleshooting Guide (T1789-96094, June 2010)

Figure 17 10 busiest backend RAID groups
.
Related Topics
See the following related topics:
• “Viewing performance summary for the XP array” on page 176
• “Viewing CHIP/CHA utilization” on page 180
• “Viewing ACP utilization” on page 181
• “Utilization Summary” on page 184
• “10 busiest LDEVs/Ports” on page 185
• “RAID Group summary” on page 188
• “Port summary” on page 190
• “Viewing LDEV data” on page 192
Viewing RAID group summary
To view the summary of overall utilization of RAID groups for an XP array, click RG Summary in the
Resource selection tree for the XP array. This feature totals the LDEV IO/s, LDEV MB/s, cache fast
write, disk fast write, cache bypass, and backend transfer values for all the LDEVs on a given RAID
group. In addition, it also displays the percentage of the RAID Group utilization random read, random
write, random write parity, sequential read, sequential write, sequential write parity, and the overall
RAID group percentage utilization (sum of the above percentages) on a given RAID group or port.
IMPORTANT:
RAID group utilization percentage is not displayed for external storage volumes. Auto LUN XP should
be installed and monitoring enabled on XP1024/XP128 arrays for the RAID Group Utilization metric
to be available on these arrays.
Click a RAID group ID to view the associated performance graphs in the Chart Work Area. For more
information, see “Plotting charts” on page 213.
Click Refresh when you want to view the updated RAID group summary.
Viewing XP arrays resources188