HP (Hewlett-Packard) HP RP7405/7410 Network Card User Manual


 
Appendix B
System Specifications
Environmental Specifications
98
PCI/Mass Storage Section Cooling
Six (6) 92mm 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. Perforation 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 be run at 1541 rpm, or 38% 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
Acoustic Noise Specification
The acoustic noise specification for the hp rp7410 server is 57.3 db (sound pressure level at bystander
position) It is appropriate for dedicated computer room environments, not office environments. The LwA is 7.5
Bels. Care should be taken to understand the acoustic noise specifications relative to operator positions
within the computer room or when adding servers to computer rooms with existing noise sources.
Air Flow
The hp rp7405/rp7410 servers require that the cabinet air intake temperature be between 68° F and 77° F
(20° C and 25° C) at 960 CFM.
Table B-6 Typical hp rp7405/rp7410 Configurations
Cell
Boards
Memory
Per Cell
Board
PCI Cards
(assumes
10 watts
each)
DVDs
Hard
Disk
Drives
Core
I/O
Bulk
Power
Supplies
Typical
Power
Typical
Cooling
Qty GBytes Qty Qty Qty Qty Qty Watts Watts
2 16 16 2 4 2 2 2000 6826
2 8 8 0 2 2 2 1810 6179
2 4 8 0 2 2 2 1757 5998
1 4 8 0 1 1 2 1148 3919