Thermal Sensors; Troubleshooting - IBM 084 Installation And User Manual

Table 8. 6Gb/s SAS EBOD I/O Module LED Descriptions
LED
I/O Module OK
I/O Module Fault
External Host Port Activity

Thermal sensors

Thermal sensors throughout the enclosure and its components monitor the thermal health of the storage
system. Exceeding the limits of critical values will cause the Over-temperature alarm to occur.

Troubleshooting

The following sections describe problems that can occur with your storage systems and some possible
solutions. The module fault LED on the ops panel displays a solid amber color to indicate a fault. All
alarms will also be reported by SES. See Elastic Storage Server Spectrum Scale RAID Administration Guide
and the Maintenance Procedures section in Elastic Storage Server Problem Determination Guide.
Table 9. Alarm Conditions
Status
PSU alert – loss of DC power from a single PSU
Cooling module fan failure
SBB I/O module detected PSU fault
PSU removed
Enclosure configuration error (VPD)
Low temperature warning
High temperature warning
Over-temperature alarm
Under-temperature alarm
I2C bus failure
Ops panel communication error (I2C)
SBB I/O module fault
SBB I/O module removed
Drive power control fault
Drive power control fault
Insufficient power available
For information on how to remove and replace a module, see "Module Replacement."
34 IBM ESS expansion: Installation and User Guide - Model 084
Description
Constant green if the I/O module is operating correctly. Flashing green
indicates an I/O module VPD error.
Constant amber if the I/O module is faulty. For replacement procedure
see "Replacing an SBB I/O module" on page 45.
Constant green indicates that there is a host port connection but no
activity. Flashing green indicates that there is a host port connection,
and data is being transferred.
Severity
Fault: loss of redundancy
Fault: loss of redundancy
Fault
Configuration error
Fault: critical
Warning
Warning
Fault: critical
Fault: critical
Fault: loss of redundancy
Fault: critical
Fault – critical
Warning
Warning; no loss of drive power
Fault: critical; loss of drive power
Warning