The internal or ambient temperature around a node has exceeded the allowable threshold for the CPU.

Administrator action

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.

Perform the following steps in the order listed. If the issue resolves after a step, there is no need to complete the subsequent steps.

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 EMC Isilon Technical Support for additional troubleshooting. For instructions, see Gathering cluster logs.