Troubleshooting; Troubleshooting Performance Monitor - HP XP20000 User Manual

7 Troubleshooting

This chapter gives troubleshooting information on Performance Monitor and XP Auto LUN. For
troubleshooting information on Remote Web Console, see the HP StorageWorks XP24000/XP20000
Remote Web Console User Guide and HP StorageWorks XP24000/XP20000 Remote Web Console
Error Codes.
Troubleshooting Performance
Troubleshooting the Export
Calling HP Technical

Troubleshooting Performance Monitor

When the WWN of a host bus adapter is displayed in red in the lower-left tree of the WWN tab,
the host bus adapter (HBA) whose WWN is displayed in red is connected to two or more ports,
but the traffic between the HBA and some of the ports are not monitored by Performance Monitor.
When many-to-many connections are established between HBAs and ports, you should make sure
that all the traffic between HBAs and ports is monitored. For details on the measures, see the HP
StorageWorks XP24000/XP20000 Performance Control User Guide.
When a part of monitoring data is missing:
While displaying Performance Monitor in short range, if I/O workloads between hosts and the
storage system become heavy, the storage system gives higher priority to I/O processing than
monitoring processing. In such a case, a part of monitoring data might be missing. If the monitoring
data are missing frequently, use the Gathering Interval option in the Monitoring Options window
to change the collection interval longer. For details, see
"Monitoring Options
NOTE:
The display of the LDEV tab, Port-LUN tab, and WWN tab is fixed in short range.
Although Monitoring Switch is set to Enable, the monitoring data is not updated:
Because the time setting of SVP is changed, the monitoring data might not be updated. Set Monit-
oring Switch to Disable, and set Monitoring Switch to Enable again.
Monitor, page 161
Tool, page 162
Support, page 166
Window" on page 52.
XP24000/XP20000 Performance Monitor User Guide
"Start Monitoring" on page 57 and
161