Seagate Exos E 4U106, Hardware Installation And Maintenance Manual

Page: 74 / 102

74 Troubleshooting and problem solving
Temperature sensors
Temperature sensors throughout the enclosure and its components monitor the thermal health of the storage system.
Exceeding the limits of critical values will cause a notification to occur.
Troubleshooting
The following sections describe common problems that can occur with your enclosure system, and some possible
solutions. For the problems listed in
Table 5 , the pertinent fault LEDs on the enclosure front panel glow amber to indicate
a fault. See also “Overview of front panel LEDs” (page 25) .
1-The enclosure will continue operating, requiring an administrator to take appropriate action, such as replacing a PSU or
reducing the room temperature. Alarm messages are signaled by the SES pages ( page 35 ).
2-An alarm is not issued for this status and severity condition.
3-The enclosure will take action, such as shutting down in order to protect the enclosure’s data content. Alarm messages
are signaled by the SES pages ( page 35 ).
PSU and system fan faults
1-See Figure 14 (page 25) for visual reference of front panel LEDs.
2-See Figure 15 (page 27) for visual reference of PSU LEDs. See Figure 16 (page 28) visual reference of system fan module LEDs.
Table 5 Alarm conditions
Status Severity Alarm
PSU alert - loss of DC power from a single PSU Fault - loss of redundancy S1
1
PSU fan fail Fault - loss of redundancy S1
1
CFF module detected PSU fault Fault S1
1
PSU removed Configuration error None
2
Enclosure configuration error (VPD) Fault – critical S1
1
Low temperature warning alert Warning S1
1
High temperature warning alert Warning S1
1
Over temperature alarm Fault – critical S4
3
I
2
C bus failure Fault – loss of redundancy S1
1
Front panel communication error (I
2
C) Critical fault S1
1
RAID error Fault – critical S1
1
CFF interface module fault Fault – critical S1
1
CFF interface module removed Warning None
2
Drive power control fault Fault – critical–loss of drive power S1
1
Insufficient power available Warning None
2
Symptom Cause Recommended action
Front panel Module Fault LED is amber
1
Any power fault Verify AC mains connections to the PSU are live
Amber LED is illuminated on fan module
2
Fan failure Replace system fan module