Figure 4 Fan Units
The server has the following cooling components:
•
Thermal sensor in the front panel [0xd8] that measures inlet ambient air temperature.
•
Up to four dual processors each with its own thermal register [0xd9, 0xda], measuring internal
die temperature.
•
Intrusion sensor, located on the common display pca, and held in contact mode by the top
cover.
•
Power supplies, each with its own pair of fans running at full speed and its own (virtual)
health sensor [0x40, 0x41].
•
Fan units 1 through 6 consisting of 2 individual fans rotors [0xe0 to 0xe9].
Power
The server power subsystem is designed to provide high availability with 1+1 power supply
redundancy.
is a block diagram of the power subsystem, including voltage
labels for each main server subsystem that requires power.
Server Subsystems
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