Table 20. 2U alarm conditions
Status Severity Alarm
PCM alert - loss of DC power from a single PCM Fault – loss of redundancy S1
PCM fan fail Fault – loss of redundancy S1
SBB module detected PCM fault Fault S1
PCM removed Configuration error None
Enclosure configuration error (VPD) Fault – critical S1
Low warning temperature alert Warning S1
High warning temperature alert Warning S1
Over temperature alarm Fault – critical S4
I
2
C bus failure Fault – loss of redundancy S1
Ops panel communication error (I
2
C) Fault – critical S1
RAID error Fault – critical S1
SBB interface module fault Fault – critical S1
SBB interface module removed Warning None
Drive power control fault Warning – no loss of disk
power
S1
Drive power control fault Fault – critical – loss of disk
power
S1
Drive removed Warning None
Insufficient power available Warning None
For details about replacing modules, see Replacing an IOM.
NOTE:
Using the ME Storage Manager, monitor the storage system event logs for information about enclosure-related
events, and to determine any necessary recommended actions.
PCM faults
Table 21. PCM recommended actions
Symptom Cause Recommended action
Ops panel Module Fault LED is amber
1
Any power fault Verify AC mains connections to PCM are
live
Fan Fail LED is illuminated on PCM
2
Fan failure Replace PCM
1. See 12 Gb/s controller module LEDs for visual reference of Ops panel LEDs.
2. See Table 11. PCM LED states for visual reference of PCM LEDs.
Thermal monitoring and control
The storage enclosure system uses extensive thermal monitoring and takes a number of actions to ensure component temperatures are
kept low, and to also minimize acoustic noise. Air flow is from the front to the back of the enclosure.
36
Troubleshooting and problem solving
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