the resulting heat from the cabinet. The fans within the power supply will operate at full speed
during standby.
Typical HP Integrity rx8640 Server Power Dissipation and Cooling
Table 2-10 provides calculations for the rx8640 configurations as described in the table.
Table 2-10 Typical HP Integrity rx8640 Server Configurations
Typical
Cooling
Typical
Power
Bulk Power
Supplies
Core
I/O
Hard Disk
Drives
DVDsPCI Cards
(assumes 10W
each)
Memory
per Cell
Board
Cell
Board
BTU/hrWattsQtyQtyQtyQtyQtyGBytesQty
132573883624216324
123833627624216164
1167234196220884
93852749424216322
8402246142208162
818323974220882
646318933110881
The air-conditioning data in Table 2-10 are derived using the following equations.
• Watts x (0.860) = kcal/hour
• Watts x (3.414) = Btu/hour
• BTU/hour divided by 12,000 = tons of refrigeration required
NOTE: When determining power requirements, you must consider any peripheral equipment
that will be installed during initial installation or as a later update. Refer to the applicable
documentation for such devices to determine the power and air-conditioning that is required to
support these devices.
Typical HP 9000 rp8440 Server Power Dissipation and Cooling
Table 2-11 provides calculations for the rp8440 configurations as described in the table.
Table 2-11 Typical HP 9000 rp8440 Server Configurations
Typical
Cooling
Typical
Power
Bulk Power
Supplies
Core
I/O
Hard Disk
Drives
DVDsPCI Cards
(assumes 10W
each)
Memory
per Cell
Board
Cell
Board
BTU/hrWattsQtyQtyQtyQtyQtyGBytesQty
129363789624216324
120623533624216164
1135233256220884
92252702424216322
8241241442208162
802323504220882
646318933110881
Environmental Specifications 39