CAUTION:
Do not switch power supplies in the same node as this will cause the node to lose power.
●
If the issue follows the power supply, the power supply must be replaced.
5. If multiple nodes report power supply issues, it is likely that the issue is environmental. Check each of the following items to
confirm the health of the power subsystem:
●
Power Distribution Unit (PDU) functionality and status of any circuit breakers in the power path
●
Power quality such as voltage, frequency values, and stability
●
Uninterruptible Power Supply (UPS) health
6. If the issue is not constant and is limited to one node, move the power to another circuit. Next, one at a time, move both
power supplies.
If the above steps do not resolve the issue, gather logs, and then contact Technical Support for additional troubleshooting. For
instructions on how to gather cluster logs, see
900130001
The internal or ambient temperature around a node has exceeded the allowable threshold for the CPU.
Description
Ambient temperature is only measured by front panel sensors. If you receive an event that indicates that the front panel is out
of specification, the temperature in your data center might need to be adjusted.
If a node is subjected to high temperatures for an extended period of time, the CPU is throttled and the node goes into read
only-mode to help prevent potential data loss due to component failure. If the node temperature reaches critical levels, it is
possible that the node will shut down entirely.
Administrator action
Perform the following steps in the order listed. If the issue resolves after a step, there is no need to complete the subsequent
steps.
●
(HD400 only) Make sure that the drive drawer is properly shut by sliding it out and re-closing it firmly but carefully.
●
Review the temperature statistics for the affected sensor, which are included in the event. If the temperature is consistently
elevated, the problem is likely a high ambient temperature in the data center. Address any changes in the cluster
environment such as air conditioning outages.
●
Verify that air flow within the rack, and through the front and rear panel vents of the node, is not obstructed in any way.
●
Make sure that the faceplate on the affected node is installed, properly seated, and undamaged. In some cases, removing
and re-seating the faceplate will resolve this issue.
●
Run the
isi_hw_status
command. Review the output to determine whether there is a slow or failed fan that was not
otherwise reported.
●
Check for high CPU and disk usage in the node. High usage can contribute to high temperatures within the node.
If the steps above were unsuccessful in clearing this event, the subsystem that monitors the health of the hardware (such as
the temperature and fan speeds) might have encountered a problem. This event can occur intermittently without harm to the
system and you can safely quiet the event unless the issue persists.
If the event persists, gather logs, and then contact Technical Support for additional troubleshooting. For instructions on how to
gather cluster logs, see
.
900130002
A sensor in the front panel of a node has exceeded the specified threshold.
Description
This event can occur intermittently without harm to the system.
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Hardware events
