Troubleshooting; General Troubleshooting Resources; Troubleshooting Performance Monitor; Troubleshooting Performance Control - HPE XP7 User Manual

7 Troubleshooting

This chapter provides troubleshooting and contact information for HPE technical support.

General troubleshooting resources

For troubleshooting information on the XP7 Storage system, see the XP7 Owner Guide.
For troubleshooting information on Remote Web Console, see the XP7 Remote Web Console
User Guide.
For information on Remote Web Console error codes, see the XP7 Remote Web Console
Messages.

Troubleshooting Performance Monitor

Error
Part of monitoring data is
missing.
The monitoring data is not
updated, even though
Monitoring Switch is set to
Enable.
The WWN of a host bus
adapter is displayed in red on
the WWN tab.

Troubleshooting Performance Control

Error
The WWN of a host bus
adapter is displayed in red on
the WWN tab.

Troubleshooting Cache Residency

Error
The host I/O response time has
become degraded.
154 Troubleshooting
Recommended action
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. If you notice that monitoring
data is frequently missing, change to a longer collection interval.
If the time setting of the SVP is changed, the monitoring data might not be updated.
Set Monitoring Switch to Disable, and set Monitoring Switch to Enable again.
The HBA for the WWN that is displayed in red is connected to two or more ports,
but the traffic between the HBA and some of the ports is not monitored by
Performance Monitor. When many-to-many connections are established between
HBAs and ports, make sure that all traffic between HBAs and ports is monitored.
For details, see "Monitoring all port-HBA traffic: many-to-many connections"
(page 122).
Recommended action
The HBA for the WWN that is displayed in red is connected to two or more ports,
but the traffic between the HBA and some of the ports is not monitored by
Performance Monitor. When many-to-many connections are established between
HBAs and ports, make sure that all traffic between HBAs and ports is monitored.
For details, see "Monitoring all port-HBA traffic: many-to-many connections"
(page 122).
Recommended action
To avoid degradation of host response time, add and delete only one LDEV at a
time. If the host timeout period is set to 10 seconds or shorter, limit the total amount
of data in one operation to:
1 GB or less for open systems
1,000 cylinders or less for mainframe systems