Yesterday one of my customers who runs HP Servers alerted me to a recent VMware KnowledgeBase article.  He was nice enough to annotate the article with some screens shots from his environment.   I received his permission to post this as today’s VMware Admin Guest Blogger.
So, if you’re running HP Servers and been annoyed by the error warning from the Intel ProcHot Sensor, ESX 3.5 Update 4 erases this annoyance.

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Issue
On HP systems with the Intel PROCHOT sensor, a warning is issued, and yet the PROCHOT label is “Normal.” Furthermore, the HealthState setting of the sensor is “10”. This situation occurs because of an HP firmware issue where the digital discreet sensor asserts conflicting states. Below is a screen shot showing this in vCenter.

Solution
This issue is resolved in ESX Server 3.5 Update 4 in that these conflicting states are now appropriately managed. Therefore, the sensor’s label and Healthstate setting would now be displayed as “Unknown,” which is proper given the information received from the firmware.