Status
Severity
Alarm
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
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
Figure 28. LEDs: Ops panel—2U enclosure front panel
for visual reference of Ops panel LEDs.
2
See
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.
Table 22. Thermal monitoring recommended actions
Symptom
Cause
Recommended action
If the ambient air is below 25ºC
(77ºF), and the fans are
observed to increase in speed,
then some restriction on airflow
The first stage in the thermal
control process is for the fans to
automatically increase in speed
when a thermal threshold is
1
Check the installation for any airflow restrictions at either the
front or back of the enclosure. A minimum gap of 25 mm (1")
at the front and 50 mm (2") at the rear is recommended.
2
Check for restrictions due to dust build-up. Clean as
appropriate.
40
Troubleshooting and problem solving