Site Preparation Guide, Second Edition - HP rp8400 Server Series

Chapter 1
System Specifications
Environmental Requirements
10
Maximum power is the sum of the worse case power consumption of every subsystem in the box, and should
be used to size worse case power consumption. Typical power consumption numbers are what HP engineers
have measured running power intensive applications. These are generally lower than maximum power
numbers due to the fact that getting all of the subsystems in the box to simultaneously draw maximum power
for long durations is uncommon.
Table 1-8 Theoretical System Component Power Dissipation
Equipment
Watts
Dissipated
Theoretical
Maximum
kcal/Hour
Btu/
Hour
Tons of
Refrigeration
Chassis fans, System board and PCI
Board
426 366.36 1454.36 0.121
Cell Board 746 641.56 2546.84 0.212
PCI Card (Maximum 25W) 25 21.50 85.35 0.007
Power Supply (BPS) 125 107.50 426.75 0.036
DVD 20 17.20 68.28 0.006
Disk Drive 25 21.50 85.35 0.007
Core I/O 70 60.20 238.98 0.020
PCI Power Supply 47 40.42 160.458 0.013
Total maximum configuration
rp8400 Server (PA8700)
4934 4243.24 16844.68 1.404
Table 1-9 Typical System Component Power Dissipation
Equipment
Watts
Dissipated
Typical
kcal/Hour
Btu/
Hour
Tons of
Refrigeration
Chassis fans, System board and PCI
Board
330 283.80 1126.62 0.094
Cell Board 500 430.00 1707.00 0.142
PCI Card 10 8.60 34.14 0.003
Power Supply (BPS) 49 42.14 167.29 0.014
DVD 20 17.20 68.28 0.006
Disk Drive 25 21.50 85.35 0.007
Core I/O 29 24.94 99.006 0.008
PCI Power Supply 47 40.42 160.458 0.013
Total maximum configuration
rp8400 Server (PA8700)
2986 2567.96 10194.20 0.850