A customer has a c7000 enclosure that is fully populated with ProLiant BL680c server blades. Two
months after the initial installation, the rack initiates a thermal shutdown. When diagnosing the
problem, you find there is not enough space to get behind the unit. You pull all the units out but
find no problems with the chassis, blades, or their cooling systems.
What is a possible cause for the thermal shutdown?

A.
The air temperature in the data center is set too low. so the enclosure fan system is rotating at
a low RPM and not removing sufficient thermal heat

B.
The enclosure’s fan system is not strong enough to remove the thermal heat generated in a
fully populated enclosure.

C.
The rack is too close to the cold air outlet. The hot air area is too large, and the cooling system
is unable to recalculate the hot air effectively.

D.
There is insufficient air circulation causing hot air from the rear of rack to be fed back to the
equipment through the front of the rack.

Explanation: