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HP Integrity rx7620 Site Preparation Guide, Fourth Editon - HP Integrity rx762 - Page 17

System Backplane, HP Integrity rx7620 Server without front bezel

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Figure 1-2 HP Integrity rx7620 Server (without front bezel) Introduction Overview System Backplane The system backplane comprises the system clock generation logic, the system reset generation logic, DC-to-DC converters, power monitor logic, and two Local Bus Adapter (LBA) link-to-PCI converter ASICs. It also includes connectors for attaching the cell boards, the PCI-X backplane, MP/SCSI Core I/O boards, SCSI cables, bulk power, chassis fans, the front panel display, intrusion switches, and the system scan card. Unlike Superdome or the rp8400, there are no Crossbar Chips (XBC) on the system backplane. The "crossbar-less" back-to-back CC connection increases performance and reduces costs. Chapter 1 3

Section	Page
1 Introduction	15
Overview	16
System Backplane	17
System Backplane to PCI-X Backplane Connectivity	18
Clocks and Reset	18
I/O Subsystem	18
Detailed HP Integrity rx7620 Server Description	21
Cell Board	22
PDH riser board	23
Central Processor Units	24
DIMMs	24
Main Memory Performance	25
Valid Memory Configurations	25
Cells and nPartitions	27
Internal Disk Devices for HP Integrity rx7620 Server	28
MP/SCSI Core I/O Board	28
Procurium LAN/SCSI Board	28
Mass Storage (Disk)	29
Server Description	30
Dimensions	30
System Chassis	30
A System Specifications	33
Dimensions and Weights	34
Electrical Specifications	35
Grounding	35
AC-Powered Systems	35
Circuit Breaker	35
System AC Power Specifications	35
DC-Powered Systems	36
Environmental Specifications	37
Temperature and Humidity	37
operating environment	37
Environmental Temperature Sensor	37
Non-Operating Environment	37
Cooling	37
Cell Section Cooling	37
Bulk Power Supply Cooling	37
PCI/Mass Storage Section Cooling	38
Standby Cooling	38
Typical Power Dissipation and Cooling	38
Acoustic Noise Specification	38
Airflow	39
System Requirements Summary	40
Power Consumption and Air Conditioning	40
Weight	40
B General Site Preparation Guidelines	43
Electrical Factors	44
Computer Room Safety	44
Fire Protection	44
Lighting Requirements for Equipment Servicing	45
Working Space for Server Access	45
Power Consumption	45
Electrical Load Requirements	45
Power Quality	45
Sources of Voltage Fluctuations	45
Power System Protection	46
Distribution Hardware	46
Wire Selection	46
Raceway Systems (Electrical Conduits)	46
Building Distribution	47
Power Routing	47
Grounding Systems	47
Power Distribution Safety Grounding (LAHJ)	47
System Installation Guidelines	50
Wiring Connections	50
Data Communications Cables	50
Environmental Elements	51
Computer Room Preparation	51
Cooling Requirements	51
Basic Air Conditioning Equipment Requirements	51
Air Conditioning System Guidelines	52
Air Conditioning System Types	52
Basic Air Distribution Systems	52
Air Conditioning System Installation	53
Air Conditioning Ducts	53
Humidity Level	54
Dust and Pollution Control	54
Metallic Particle Contamination	55
Electrostatic Discharge Prevention	55
Static Protection Measures	55
Acoustics	56
Facility Characteristics	57
Floor Loading	57
Raised Floor Loading	57
Floor Loading Terms	57
Average Floor Loading	58
Typical Raised Floor Site	58
Windows	59
Space Requirements	60
Delivery Space Requirements	60
Operational Space Requirements	60
Equipment Footprint Templates	62
Computer Room Layout Plan	63
Power Plug Configuration	65
Conversion Factors and Formulas	69
Sample of an Installation Schedule	70
Sample Site Inspection Checklist	71

Match case Limit results 1 per page

Chapter 1

Introduction

Overview

Figure 1-2

HP Integrity rx7620 Server (without front bezel)

System Backplane

The system backplane comprises the system clock generation logic, the system reset generation logic,

DC-to-DC converters, power monitor logic, and two Local Bus Adapter (LBA) link-to-PCI converter ASICs. It

also includes connectors for attaching the cell boards, the PCI-X backplane, MP/SCSI Core I/O boards, SCSI

cables, bulk power, chassis fans, the front panel display, intrusion switches, and the system scan card. Unlike

Superdome or the rp8400, there are no Crossbar Chips (XBC) on the system backplane. The “crossbar-less”

back-to-back CC connection increases performance and reduces costs.