Things To Consider - Compaq 312134-B21 - Intel Pentium II Xeon Processor Board White Paper

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HITE APER
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N T R O D U C T I O N
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This document describes how to use the performance health counters using the Microsoft Windows
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. . NT Performance Monitor (PerfMon), while making you aware of other applications available to
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analyze the performance counters and monitor the health of the power supply.
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C M
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O M P A Q I C R O P R O C E S S O R
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Y S T E M V E R V I E W
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To further increase server reliability, Compaq offers hot-pluggable N+1 redundant power supplies
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with the Compaq ProLiant 6000. Under maximum load conditions a ProLiant 6000 will require
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one or two power supplies to operate. Depending upon the system configuration, a third power
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supply may be necessary to provide redundancy. These power supplies are microprocessor-based.
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The programming code used in the power supply module allows monitoring and reporting of
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several output voltages, output currents, output power, and power supply temperatures. Each
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supply is dual-rated, providing 500W at 120V or 750W at 240V. All testing for this white paper
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has been completed using the low line voltage; however, Compaq strongly recommends operating
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at the high line of 240 volts when the system is fully configured. Operating at 240 volts increases
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the power supply rating from 500 watts to 750 watts.
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The ProLiant 6000 does not completely turn OFF. It will either be in the ON mode or in the
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. . STANDBY mode, rather than being ON or OFF. When the AC power is plugged into the power
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supply, the system goes into STANDBY mode. When the power switch at the front of the unit is
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pressed, the unit goes into ON mode. In STANDBY mode, power is removed from most of the
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electronics and drives, but portions of the power supply, LCD, and internal circuitry remain active.
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. . To completely remove all power from the system, you must disconnect all power cords from the
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server.
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Things to Consider

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Some important factors to remember when using the information provided in this white paper are:
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The amount of load (disk I/O, network traffic, CPU usage, caching, video activity, etc.)
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applied to any given system affects the current (amp) usage and power consumption.
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Values shown represent full load conditions, unless otherwise noted.
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It is not possible to simulate every possible configuration for testing; the data provided is
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based on averages. It is important that you verify all theory by testing in your particular
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environment.
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The only definite method for confirming power supply redundancy is to disconnect one of the
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. . power cords.
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If only one power supply is installed, the system is not redundant. A server that is not
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redundant, using two low line (120V) power inputs, may become redundant by changing the
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power inputs to the high line voltage (240V) or by adding a third power supply.
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B A S E D O W E R U P P L Y A N D