P9000Watch and P9000Sketch Reference guide for HP StorageWorks P9000 Performance Advisor v5.3 (T1789-96325, August 2011)

A P9000Watch use case scenarios
Scenario 1: Port I/O spike
Business case
Periodic port I/O spikes are observed in P9000 Performance Advisor.
Objective
Locate the offending host group/application.
Resolution
P9000Watch can be used to find the hot spot by collecting the performance data for very short
intervals, such as, 10 seconds.
Perform the following steps to find the hot spot:
1. Select the affected port (You can find the affected port using P9000 Performance Advisor).
2. Select all LDEVs attached to the port.
NOTE:
You can use one of the following selection schemes to select the LDEVs:
• Filter LDEVs by RAID Groups
• Filter RAID Groups by LDEVs
• Manually add RAID Groups and LDEVs without Filtering
3. On the output screen, monitor and collect performance data of all the ports.
Results
Using the results displayed by P9000Watch, you can identify the application that is causing the
performance issue and can take the corrective action.
Scenario 2: Poor application response
Business case
The XP or the P9000 disk array is suspected to be the cause of an application’s poor performance.
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