HP Integrity rx7620 Server - User Service Guide, Sixth Edition

AC-Powered Systems....................................................................................................................175
Circuit Breaker..........................................................................................................................175
System AC Power Specifications..............................................................................................176
Power Cords........................................................................................................................176
System Power Specifications...............................................................................................176
DC-Powered Systems....................................................................................................................177
Environmental Specifications.............................................................................................................177
Temperature and Humidity...........................................................................................................177
Operating Environment...........................................................................................................177
Environmental Temperature Sensor........................................................................................177
Non-Operating Environment...................................................................................................177
Cooling...........................................................................................................................................177
Cell Section Cooling.................................................................................................................177
Bulk Power Supply Cooling.....................................................................................................177
PCI/Mass Storage Section Cooling...........................................................................................178
Standby Cooling.......................................................................................................................178
Typical Power Dissipation and Cooling........................................................................................178
Acoustic Noise Specification.........................................................................................................178
Airflow...........................................................................................................................................178
System Requirements Summary.........................................................................................................179
Power Consumption and Air Conditioning..................................................................................179
Weight............................................................................................................................................179
C General Site Preparation Guidelines......................................................................181
Electrical Factors.................................................................................................................................181
Computer Room Safety.................................................................................................................181
Fire Protection..........................................................................................................................181
Lighting Requirements for Equipment Servicing....................................................................181
Working Space for Server Access.............................................................................................182
Power Consumption......................................................................................................................182
Electrical Load Requirements (Circuit Breaker Sizing).................................................................182
Power Quality................................................................................................................................182
Sources of Voltage Fluctuations...............................................................................................182
Power System Protection..........................................................................................................182
Distribution Hardware..................................................................................................................183
Wire Selection...........................................................................................................................183
Raceway Systems (Electrical Conduits)...................................................................................183
Building Distribution...............................................................................................................183
Power Routing..........................................................................................................................183
Grounding Systems.......................................................................................................................183
Power Distribution Safety Grounding (LAHJ).........................................................................183
Main Building Electrical Ground........................................................................................184
Electrical Conduit Ground..................................................................................................184
Power Panel Ground...........................................................................................................184
Computer Safety Ground....................................................................................................184
Dual Power Source Grounding...........................................................................................184
Cabinet Performance Grounding (High-Frequency Ground)............................................184
Raised Floor “High-Frequency Noise” Grounding............................................................184
Equipment Grounding Implementation Details.................................................................185
System Installation Guidelines......................................................................................................186
Wiring Connections..................................................................................................................186
Data Communications Cables..................................................................................................186
Environmental Elements.....................................................................................................................186
Computer Room Preparation........................................................................................................186
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