HP RP7405/7410 Typical Power Dissipation and Cooling, Acoustic Noise Specification, Air Flow

System Specifications

Environmental Specifications

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

Table B-6	Typical hp rp7405/rp7410 Configurations
	Memory	PCI Cards		Hard	Core	Bulk	Typical	Typical
Cell		(assumes
	Per Cell		DVDs	Disk		Power
Boards		10 watts			I/O		Power	Cooling
	Board			Drives		Supplies
		each)
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

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.

98 Appendix B