Typical Power Dissipation And Cooling; Table B-5. Typical Hp Integrity Rx8620 Server Configurations - HP Integrity rx8620 User's & Service Manual

PCI/Mass Storage Section Cooling
Six 92-mm fans located between the mass storage devices and the PCI card cage provide airflow through
these devices. The PCI fans are powered off of housekeeping power and run at full speed at all times. The air
is pulled through the mass storage devices and pushed through the PCI card cage. Separation is provided
between the PCI bulkheads to allow adequate exhaust ventilation and to help reduce the localized airflow
dead spots that typically occur at the faceplate tail of each PCI card.
Standby Cooling
Several components within the chassis consume significant amounts of power while the system is in standby
mode. The system fans will run at a portion of full speed during standby to remove the resulting heat from the
cabinet. The fans within the power supply will operate at full speed during standby.

Typical Power Dissipation and Cooling

Table B-5 provides calculations for configurations as described in the table.
Table B-5 Typical HP Integrity rx8620 Server Configurations
Memory
Cell
per Cell
Board
Board
Qty GBytes
4 16
4 8
4 4
2 16
2 8
2 4
1 4
The air-conditioning data in Table B-5 is 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.
Appendix B
PCI Cards
(assumes DVDs
10W each)
Qty Qty
16 2
16 2
8 0
16 2
8 0
8 0
8 0
Hard Bulk
Core
Disk Power
I/O
Drives Supplies
Qty Qty Qty
4 2 6
4 2 6
2 2 6
4 2 4
2 2 4
2 2 4
1 1 3
System Specifications
Environmental Specifications
Typical Typical
Power Cooling
Watts BTU/hour
3800 12973
3395 11591
3177 10846
2241 7651
1936 6610
1880 6418
1228 4192
181