IBM System Storage SAN384B-2 Installation, Service And User Manual page 171

Table 27. Troubleshooting (continued)
None of the LEDs on an
individual component are
on.
CP blades are failing over
frequently.
One or more port or router
blades have either shut
down or failed POST as
indicated by the error log.
An individual component
is not operating as
expected.
Component might not be seated
correctly.
Component might have failed.
There is excessive serial port
activity.
CP blade is attached to an
Ethernet with high traffic loads.
Chassis is overheated.
Blades might be overheated.
Blades might be faulty.
Pins on the blade or the backplane
might be damaged.
Component may not have power
or may not be firmly seated.
Pins on the component or the
backplane might be damaged.
The component might have failed.
Ensure that the SAN384B-2 has power and
component is firmly seated. If problem continues,
run the sensorShow command to determine
component status. If component is a CP blade or
port blade, enter the slotShow command to
determine the status.
Replace the component as necessary.
Ensure that the serial port activity remains below
the specified amount.
Ensure that Ethernet traffic remains below
specified amount.
Enter the tempShow and sensorShow commands
to check the internal temperature. If components
are overheating, shut down port blades as
necessary to return the temperature to operating
range. Also try moving the blades within the
chassis since it is possible that airflow might not
be adequate to cool everything in certain
configurations.
Enter the sensorShow command to check the
internal temperature readings. If components are
overheating, shut down port blades as necessary to
return the temperature readings to the operating
ranges. Also try moving the blades within the
chassis since it is possible that airflow might not
be adequate to cool everything in certain
configurations.
Enter the slotShow command to determine status.
For more information, enter the diagDisablePost
command; then, the slotPowerOff [slot number]
and slotPowerOn [slot number] command.
Resolve the source of the problem or replace the
blade as required.
Remove the blade from the chassis and inspect
pins on the blade and on the backplane inside the
slot. Do not reinstall if pins on either component
are visibly damaged, as this could damage pins on
other component. Replace the components as
required.
Ensure component is receiving power (power LED
should be on) and component is firmly seated.
Remove the component from the chassis and
inspect the pins on the component and inside the
chassis. Do not reinstall if pins on either
component are visibly damaged, as this could
damage pins on other component. Replace parts as
required.
Enter the tempShow and sensorShow commands
to determine component status. If component is a
CP blade or port blade, enter the slotShow
command to determine the status. Replace the
component as necessary.
Appendix C. Diagnostics and troubleshooting
139