Is a connected port Network Port Link Status LED off?
Answer
Possible reasons
Actions
No
System functioning properly.
No action required.
Yes
The link is down.
l
Check cable connections and reseat if necessary.
l
Inspect cables for damage. Replace cable if necessary.
l
Swap cables to determine if the fault is caused by a defective cable.
Replace cable if necessary.
l
Verify that the switch, if any, is operating properly. If possible, test
with another port.
l
Verify that the HBA is fully seated, and that the PCI slot is powered
on and operational.
l
In the SMU, review event logs for indicators of a specific fault in a
network component. Follow any recommended actions.
l
Use standard networking troubleshooting procedures to isolate
faults on the network.
Table 15 Diagnostics LED status: Rear panel "Network Port Link Status"
Is the power supply PCM OK LED off?
Answer
Possible reasons
Actions
No
System functioning properly.
No action required.
Yes
The power supply module is not receiving
adequate power.
l
Verify that the power cable is properly connected, and check the
power source to which it connects.
l
Verify that the PCM is firmly locked into position within the PCM
slot.
l
In the SMU, review event logs for specific information regarding a
PCM fault. Follow any recommended actions.
l
If the above action does not resolve the fault, isolate the fault, and
contact an authorized service provider for assistance.
Table 16 Diagnostics LED status: Rear panel power supply module "PCM OK"
Is the power supply AC Fail/Fan Fail/DC Fail LED amber?
Answer
Possible reasons
Actions
No
System functioning properly.
No action required.
Yes
The power supply unit or a fan is operating
at an unacceptable voltage/RPM level, or
has failed.
When isolating faults in the power supply module, remember that the
fans in both modules receive power through a common bus on the
midplane, so if a power supply unit fails, the fans continue to operate
normally.
l
Verify that the power supply module is firmly locked into position
within the PCM slot.
l
Verify that the power cable is connected to a power source.
l
Verify that the power cable is connected to the power supply
module.
Table 17 Diagnostics LED status: Rear panel power supply module "AC Fail/Fan Fail/DC Fail"
Controller failure
Cache memory is flushed to nonvolatile memory in the case of a controller failure or power loss. During the write to
nonvolatile memory process, only the components needed to write the cache to nonvolatile memory are powered by the
supercapacitor. This process typically takes 60 seconds per 1 Gbyte of cache. After the cache is copied to nonvolatile
54
Chapter 7
Troubleshooting