There are multiple fan failures. 5 minute drive power down warning.

Administrator action

When multiple fans fail or a fan module is removed for more than two minutes, the node will reboot, and the drives will power down within five minutes to prevent the drives from overheating. The drives will remain powered down until the failed fan modules are replaced. Replace a fan module if the fan has failed or re-insert a fan module if it has been pulled for maintenance.

If the event does not clear itself when maintenance is complete, or if maintenance is not being performed on the node, follow the instructions to gather logs, and contact EMC Isilon Technical Support.