A sensor on a node indicates an elevated temperature. Drives are overheating. The node will reboot immediately. Drive power will discontinue in five minutes.

The node will reboot but will not rejoin the cluster until temperatures are within acceptable thresholds. If not cooled within five minutes, the drives will stay powered down until the inlet temperature is at an acceptable level to restart.

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.