Owners Manual

Table 23. Thermal alarm recommended actions
Symptom Cause Recommended action
4. Check for excessive re-circulation of heated air from rear
to front. Use of the enclosure in a fully enclosed rack is not
recommended.
5. If possible, shut down the enclosure and investigate the
problem before continuing.
Troubleshooting 5U enclosures
The table describes common problems that can occur with your enclosure system, together with possible solutions. For all of the
problems listed in the following table , the Module Fault LED on the Ops panel turns amber to indicate a fault. All alarms will also
report using SES.
Table 24. 5U alarm conditions
Status Severity
PSU alert–loss of DC power from a single PSU Fault – loss of redundancy
Cooling module fan failure Fault – loss of redundancy
SBB I/O module detected PSU fault Fault
PSU removed Configuration error
Enclosure configuration error (VPD) Fault – critical
Low temperature warning Warning
High temperature warning Warning
Over-temperature alarm Fault – critical
Under-temperature alarm Fault – critical
I
2
C bus failure Fault – loss of redundancy
Ops panel communication error (I
2
C) Fault – critical
RAID error Fault – critical
SBB I/O module fault Fault – critical
SBB I/O module removed Warning
Drive power control fault Warning – no loss of drive power
Drive power control fault Fault – critical – loss of drive power
Insufficient power available Warning
Thermal considerations
Thermal sensors in the 5U84 enclosure and its components monitor the thermal health of the storage system.
NOTE:
● Exceeding the limits of critical values will activate the over-temperature alarm.
● For information about 5U84 enclosure alarm notification, see 5U alarm conditions on page 41.
Troubleshooting and problem solving 41