
SPSH4 Server SystemTechnical Product Specification
Revision 1.11
Intel reference number 10736
39
circuit operates the fans at low speed. When ambient temperature is between 30
°
C and 35
°
C or
a fan fails, the fan power control circuit operates the fans at maximum speed.
4.3.2 Cooling
Summary
The redundant, six fan cooling subsystem is sized to provide cooling for:
•
Up to four Intel MP Xeon processors dissipating 75 W each
•
24 GB of DDR memory
•
Ten 15k RPM hard drives
•
Eight full-length PCI cards
•
Three 5
¼
“ peripheral bay devices
•
DC output redundant, fully-loaded power subsystem
The cooling subsystem is designed using a worst-case analysis with no margin under a single
fan failure condition. The lower fan speed settings were chosen to meet acoustic and thermal
requirements. To ensure that all components remain within specification under all system
environmental conditions, there will be a recommended time limit for fan and power supply
module hot-swap operations.
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