Dell EMC PowerVault ME4 Series - Fault isolation methodology

Table 21. 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
For details about replacing modules, see the Dell EMC PowerVault ME4 Series Storage System Owner’s Manual.
NOTE:
Use the ME Storage Manager to monitor the storage system event logs for information about enclosure-related
events, and to determine any necessary recommended actions.
Thermal considerations
NOTE:
Thermal sensors in the 5U84 enclosure and its components monitor the thermal health of the storage system.
• Exceeding the limits of critical values activates the over-temperature alarm.
• For information about 5U84 enclosure alarm notification, see Table 21. 5U alarm conditions.
Fault isolation methodology
ME4 Series Storage Systems provide many ways to isolate faults. This section presents the basic methodology that is used to locate faults
within a storage system, and to identify the pertinent CRUs affected.
As noted in Using guided setup, use the ME Storage Manager to configure and provision the system upon completing the hardware
installation. Configure and enable event notification to be notified when a problem occurs that is at or above the configured severity. See
the Dell EMC PowerVault ME4 Series Storage System Administrator’s Guide for more information.
When you receive an event notification, follow the recommended actions in the notification message to resolve the problem.
Fault isolation methodology basic steps
• Gather fault information, including using system LEDs as described in Gather fault information.
• Determine where in the system the fault is occurring as described in Determine where the fault is occurring.
• Review event logs as described in Review the event logs.
• If required, isolate the fault to a data path component or configuration as described in Isolate the fault.
Cabling systems to enable use of the replication feature—to replicate volumes—is another important fault isolation consideration
pertaining to initial system installation. See Host ports and replication and Isolating replication faults for more information about
troubleshooting during initial setup.
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Troubleshooting and problem solving