Site Preparation Guide, Second Edition - HP Integrity rx4640 Server

System Specifications
Environmental Specifications
Chapter 1
17
NOTE A power supply filler is required in the unused power supply slot to maintain proper airflow
throughout the system.
PCI/Mass Storage Section Cooling
Four 127 mm fans located in the center of the chassis provide airflow for all of the PCI slots. The fans are
controlled by the system temperature and run at the speed necessary to maintain proper internal
temperature throughout the chassis.
The air is pulled through openings in the front cover and the mass storage devices, and pushed through the
PCI card cage.
Perforation is provided between and above the PCI card cage to allow proper exhaust ventilation to maintain
the required temperature rating of the PCI cards.
Figure 1-2 Airflow through hp Integrity rx4640
Acoustic Noise Specification
The acoustic noise specification for the HP Server is as follows:
• 53 db LpA (sound pressure level at bystander position in a dedicated computer room environment
temperature of <25° C)