Viewing logical device data – HP XP P9000 Performance Advisor Software User Manual
Page 390
Viewing Logical Device data
Consider two RAID groups (preferably belonging to the same drive type) that have an imbalance,
where one RAID group is less busy compared to the other RAID group. The less busier RAID group
has enough capacity. You can relocate LDEVs from the other RAID group to ensure load balancing
between the RAID groups.
P9000 Performance Advisor provides the overall average utilization for each RAID group, which also
displays the percentage of RAID group utilization by an LDEV. In addition, the Total LDEV I/O
performance metric graphs are displayed for all the LDEVs that you select in P9000 Remote Web
Console.
To view the logical device data:
1.
Complete steps 1 and 2 mentioned for “
Launching P9000 Performance Advisor
2.
Select Logical Devices in the list displayed for the P9000 disk array serial number.
3.
In the right work area, select the Logical Device record for which you want to view the usage
and performance data in Performance Advisor.
4.
Click Settings > Launch Application > Session Name (default: Performance Advisor).
The performance data for the LDEV Total IO - Frontend metric is displayed in the Frontend IO
Metrics chart window. LDEV Total IO - Frontend metric indicates the total frontend I/O rate on
the selected LDEV over a particular duration. The following image shows the total I/O rate on
the LDEVs, 0:81, 0:82. and 0:83 for the past one week. For more information on using other
chart options, see “
Launching P9000 Performance Advisor from other Storage products
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