Status Severity
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 Table 24. 5U alarm conditions.
CLI port connections
ME4 Series Storage System controllers feature a CLI port employing a 3.5mm stereo plug and a mini-USB Type B form factor. For more
information about connecting a serial cable, see Connecting to the CLI port using a serial cable.
Temperature sensors
Temperature sensors throughout the enclosure and its components monitor the thermal health of the storage system. Exceeding the
limits of critical values causes a notification to occur.
Host I/O
When troubleshooting disk drive and connectivity faults, stop I/O to the affected disk groups from all hosts as a data protection
precaution. As an additional data protection precaution, it is helpful to conduct regularly scheduled backups of your data. See Shutting
down a controller module.
38
Troubleshooting and problem solving
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