Compaq 312134-B21 - Intel Pentium II Xeon Processor... Quick reference guide

WHITEPAPER
1
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
422A/0697ECG
June 1997
Prepared By
Windows NT Integration
Compaq Computer
Corporation
CONTENTS
Introduction....................3
Compaq
Microprocessor-
based Power
Supply and System
Overview........................3
Things to Consider................ 3
Description of Power Supply
LEDs...................................4
Comparison of
Utilities Available
to Monitor Power
Consumption..................5
Performance Monitor............. 5
Compaq Insight Manager.......5
Installing the
Power Supply
Performance
Counters ........................6
Obtaining the Compaq Resource
Paq for Windows NT .............6
List of Performance Counters.7
How to Determine
Power
Consumption.................. 7
Analyzing
Performance
Counters Using
Performance
Monitor......................... 11
Determining Redundancy..... 12
Power Predictions Before
Adding Components............ 12
Event Logging.................... 14
Setting Alerts..................... 15
Power Consumption Test
Scenarios .......................... 17
Considerations to Eliminate
Single Points of Failure ....... 18
Summary...................... 19
Compaq ProLiant 6000 Power
Management using Windows NT
Performance Monitor
The focus of this white paper is to describe redundant power supplies and power supply
performance counters on a Compaq ProLiant 6000 system running Microsoft Windows
NT 4.0. It explains how to monitor redundant hot-pluggable power supply modules using
the Microsoft Windows NT Performance Monitor with the Compaq performance health
counters.
The information presented in this document is intended for system administrators,
network managers, and system/network engineers with knowledge of Compaq server
products and Microsoft Windows NT.
This document describes how to:
•evaluate information provided by the power supply performance counters to
determine total power consumption
•interpret performance counter values to determine power supply redundancy
•calculate power usage to predict effects of adding additional components to your
system
•provide test scenarios that demonstrate power utilization and its effects on
redundancy
•denote caveats to help eliminate single points of failure
This document assumes that you know how to use the Windows NT Performance Monitor.
For instructions on using the utility, please refer to the Windows NT Resource Guide
and/or the Windows NT Performance Monitor Help file.
Help us improve our technical communication. Let us know what you think about the
technical information in this document. Your feedback is valuable and will help us
structure future communications. Please send your comments to:
[email protected]

WHITEPAPER (cont.)
2
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
NOTICE
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL
OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE
FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.
This publication does not constitute an endorsement of the product or products that were tested.
The configuration or configurations tested or described may or may not be the only available
solution. This test is not a determination of product quality or correctness, nor does it ensure
compliance with any federal, state or local requirements. Compaq does not warrant products other
than its own strictly as stated in Compaq product warranties.
Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Compaq, Contura, Deskpro, Fastart, Compaq Insight Manager, LTE, PageMarq, Systempro,
Systempro/LT, ProLiant, TwinTray, ROMPaq, LicensePaq, QVision, SLT, ProLinea, SmartStart,
NetFlex, DirectPlus, QuickFind, RemotePaq, BackPaq, TechPaq, SpeedPaq, QuickBack, PaqFax,
Presario, SilentCool, CompaqCare (design), Aero, SmartStation, MiniStation, and PaqRap,
registered United States Patent and Trademark Office.
Netelligent, Armada, Cruiser, Concerto, QuickChoice, ProSignia, Systempro/XL, Net1, LTE Elite,
Vocalyst, PageMate, SoftPaq, FirstPaq, SolutionPaq, EasyPoint, EZ Help, MaxLight, MultiLock,
QuickBlank, QuickLock, UltraView, Innovate logo, Wonder Tools logo in black/white and color,
and Compaq PC Card Solution logo are trademarks and/or service marks of Compaq Computer
Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
©1997 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.
Microsoft, Windows, Windows NT, Windows NT Server and Workstation, Microsoft SQL Server
for Windows NT are trademarks and/or registered trademarks of Microsoft Corporation.
Compaq ProLiant 6000 Power Management using Windows NT
Performance Monitor
Final Edition (June 1997)
Document Number 422A/0697ECG

WHITEPAPER (cont.)
3
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
INTRODUCTION
This document describes how to use the performance health counters using the Microsoft Windows
NT Performance Monitor (PerfMon), while making you aware of other applications available to
analyze the performance counters and monitor the health of the power supply.
COMPAQ MICROPROCESSOR-BASED POWER SUPPLY AND
SYSTEM OVERVIEW
To further increase server reliability, Compaq offers hot-pluggable N+1 redundant power supplies
with the Compaq ProLiant 6000. Under maximum load conditions a ProLiant 6000 will require
one or two power supplies to operate. Depending upon the system configuration, a third power
supply may be necessary to provide redundancy. These power supplies are microprocessor-based.
The programming code used in the power supply module allows monitoring and reporting of
several output voltages, output currents, output power, and power supply temperatures. Each
supply is dual-rated, providing 500W at 120V or 750W at 240V. All testing for this white paper
has been completed using the low line voltage; however, Compaq strongly recommends operating
at the high line of 240 volts when the system is fully configured. Operating at 240 volts increases
the power supply rating from 500 watts to 750 watts.
The ProLiant 6000 does not completely turn OFF. It will either be in the ON mode or in the
STANDBY mode, rather than being ON or OFF. When the AC power is plugged into the power
supply, the system goes into STANDBY mode. When the power switch at the front of the unit is
pressed, the unit goes into ON mode. In STANDBY mode, power is removed from most of the
electronics and drives, but portions of the power supply, LCD, and internal circuitry remain active.
To completely remove all power from the system, you must disconnect all power cords from the
server.
Things to Consider
Some important factors to remember when using the information provided in this white paper are:
•The amount of load (disk I/O, network traffic, CPU usage, caching, video activity, etc.)
applied to any given system affects the current (amp) usage and power consumption.
•Values shown represent full load conditions, unless otherwise noted.
•It is not possible to simulate every possible configuration for testing; the data provided is
based on averages. It is important that you verify all theory by testing in your particular
environment.
•The only definite method for confirming power supply redundancy is to disconnect one of the
power cords.
•If only one power supply is installed, the system is not redundant. A server that is not
redundant, using two low line (120V) power inputs, may become redundant by changing the
power inputs to the high line voltage (240V) or by adding a third power supply.

WHITEPAPER (cont.)
4
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Description of Power Supply LEDs
Each power supply has two LEDs on the back panel, as indicated in Figure 1. The top LED
indicates the DC power status. Green indicates that the power supply is functioning and no faults
have been reported. The lower LED is the AC power indicator. A green power indicator LED
means that AC power is OK, and power is currently being applied to the module. At initial start
up, the status LED changes from amber to dark after a successful self-test. The status LED
changes to green when DC power is present and functional. Other possible states of the LEDs are
described in Table 1.
Status LED
Power Indicator LED
Figure 1: Back Panel View

WHITEPAPER (cont.)
5
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
TABLE 1
POWER SUPPLY LEDS
LED Indicator LED State Meaning
Status LED Green Power supply functional, no faults detected.
Amber Power supply failure.
Flashing Green Sleep mode, or system waiting for the restart
delay to expire before restarting.
Flashing Amber Self-test failure.
Dark/Off Local standby. Panel open or memory card
not connected.
Alternating Green/Amber Multiple restart attempts failed.
Power Indicator LED Green Power connected to the power module.
Dark/Off No power connected to the power module.
COMPARISON OF UTILITIES AVAILABLE TO MONITOR POWER
CONSUMPTION
This section describes the tools available for monitoring power consumption for the hot-pluggable,
redundant power supplies.
Performance Monitor
The Performance Monitor (PerfMon) utility allows you to monitor the behavior of a specific
hardware or software component of a Windows NT workstation or server using performance
counters. When you investigate the performance of a component, you are likely to use many of the
counters in the performance object associated with the component. A thorough investigation
typically requires that you monitor counters from several different performance objects.
PerfMon allows you to track variations in the use of system components over time, monitor
systems remotely, and measure operating system and application performance. Inherent to
Windows NT, it provides a means of adding counters for software and hardware monitoring
without the trouble of writing all the code needed to monitor performance and usage of application
and system components. The focus of this paper is to monitor the power supply performance
counters provided by Compaq to determine power consumption and redundancy in a Compaq
ProLiant 6000 server.
For PerfMon usage instructions, please refer to the Windows NT Resource Guide and/or the
Windows NT Performance Monitor Help file.
Compaq Insight Manager
Compaq Insight Manager is a comprehensive management tool used to monitor and control the
operation of Compaq servers and clients. Insight Agents make health, configuration, and
performance data available for key subsystems. Working in conjunction with hardware and
firmware, Insight Manager provides the ability to observe information concerning the power
supply status. Insight Agents determine whether all power supplies are functional, report power
supply failures, and discern if power supplies are redundant.

WHITEPAPER (cont.)
6
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
INSTALLING THE POWER SUPPLY PERFORMANCE COUNTERS
In order to use the performance counters, the System Management Driver must be installed on the
server. The System Management Driver can be obtained from the Compaq SmartStart and Support
Software CD or the Compaq internet site at:
http://www.compaq.com/support/files/server/WINNT/index.html.
The power supply performance counters can be obtained from the Compaq Resource Paq Version
2.5 - Cool Stuff for Windows NT. For information on obtaining the Resource Paq, see the
following section.
The counters will only be installed on hardware for which relevant information can be displayed.
Steps for installing the performance health counters are as follows:
1. Install the Compaq System Management Driver (SYSMGMT.SYS).
2. Reboot your system.
3. Install the performance monitor files. This can be done by installing directly from the
Compaq Resource Paq or launching the executable file, PFSYS.EXE, which can be copied
from the Resource Paq.
Obtaining the Compaq Resource Paq for Windows NT
The Compaq Resource Paq (Part No. 185939-003) is free of charge. However, you must pay the
applicable shipping and handling charges.
Information on obtaining the Compaq Resource Paq can be found on the web at:
http://www.compaq.com/solutions/frontline/winnt/ordering.html
You can place an order electronically via the Internet, or via fax. Refer to the web site for details.

WHITEPAPER (cont.)
7
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
List of Performance Counters
The following table provides a list of the performance health counters available for the power
supply, and a description of each.
TABLE 2
POWER SUPPLY PERFORMANCE COUNTERS
COUNTER DESCRIPTION
%12V channel power capacity Percentage of power capacity currently used on the 12V channel
%5V channel power capacity Percentage of power capacity currently used on the 5V channel
%3V channel power capacity Percentage of power capacity currently used on the 3V channel
% Power capacity Percentage of total power capacity currently being used
% Temperature threshold Percentage of temperature limit reached
12V channel current (mA) Total output current on the 12V channel
12V channel power (mW) Total output power on the 12V channel
12V channel voltage (mV) Total output voltage on the 12V channel
5V channel current (mA) Total output current on the 5V channel
5V channel power (mW) Total output power on the 5V channel
5V channel voltage (mV) Total output voltage on the 5V channel
3V channel current (mA) Total output current on the 3V channel
3V channel power (mW) Total output power on the 3V channel
3V channel voltage (mV) Total output voltage on the 3V channel
Line voltage (mV) AC incoming voltage
Power (mW) Total power consumption
Redundancy Indicates whether or not the power supplies are redundant
Temperature (Celsius) Temperature of the power supply in Celsius
Temperature (Fahrenheit) Temperature of the power supply in Fahrenheit
HOW TO DETERMINE POWER CONSUMPTION
The ProLiant hot-pluggable redundant power supply 750/500 watts N+1 with support for up to
three units per system allows a 240V or 120V AC input, and provides three primary output
channels: 3V, 5V and 12V. The primary channels we are concerned with are 12V and 5V, since
most Compaq-provided options operate on either the 12V or 5V channels (see Table 3). The
product of the current (amp) multiplied by the voltage yields the amount of power being
consumed. Table 3 represents current (amp) consumption for each component mentioned. It can
be used to help identify how the addition of a component affects a server, see the following
examples:
Example 1: Effects of Adding a Network Interface Controller
A Netelligent 10/100TX PCI network interface controller consumes power on the 5V channel only, so adding one network controller to a
server will only affect power on the 5V channel. This controller consumes .84 amps under typical load conditions, adding one will

WHITEPAPER (cont.)
8
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
increase power consumption on the 5V channel by 9.2 watts. Adding two controllers will increase the power consumed on the 5V
channel by 18.4 watts. For information on performing the calculations see the section entitled “Power Predictions Before Adding
Components” on Page 12 of this white paper.
Example 2: Effects of Adding Memory
Memory operates on the 3V channel, so if a 64MB DIMM is added it will only affect power consumption on the 3V channel. At this time,
few components operate on the 3V channel so this addition will not adversely affect power consumption. Primary concern should be
placed on the 5V and 12V channels.
Example 3: Effects of Adding a CD-ROM Drive
A CD-ROM drive consumes power on the 5V and 12V channel. When typical load is applied the CD-ROM drive will consume .7 amps on
the 5V channel and .21 amps on the 12V channel. If one CD-ROM drive is added to a server it will consume an additional 3.5 watts on
the 5V channel and 2.52 watts on the 12V channel. For information on performing the calculations see the section entitled “Power
Predictions Before Adding Components” on Page 12 of this white paper.

WHITEPAPER (cont.)
9
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
The information provided in Table 3 can be very beneficial when used in conjunction with the
information provided in the section entitled “Power Predictions Before Adding Components” on
Page 12 of this white paper.
Note: As new products are developed, their power consumption requirements may differ from the
test results presented in this white paper. All components mentioned are Compaq-provided
options, either standard on the ProLiant 6000 system or available for purchase through Compaq.
Important: The information provided in Table 3 should be used as a guide only.
TABLE 3
CURRENT USAGE PER VOLTAGE CHANNEL
Component 12V Channel 5V Channel 3V Channel
CD-ROM1Approx. 77%2Approx. 23%
Eisa Adapters3Yes
Fans Yes
Floppy Drive Yes
Hard Drives Approx. 66% Approx. 34%
Internal Slot Board Yes
Keyboard Yes
Memory Yes
Memory board Yes
Mouse Yes
PCI Adapters4Yes
Processors Approx. 92% Approx. 7% Approx. 1%
Tape Drives5Yes Yes
1Percentages are based upon typical usage, percentages will change under maximum
load conditions.
2Percentage values mean that the total current consumption is divided accordingly.
See Example 3 above.
3Currently most Compaq-provided EISA adapters primarily operate on the 5V channel
however new (and future) boards may operate on the 12V channel.
4Currently most Compaq-provided PCI adapters operate primarily on the 5V channel
however new (and future) boards may operate on the 3V or 12V channel.
5Current Distribution is almost even on both channels, utilization varies depending on the type
of tape drive.

WHITEPAPER (cont.)
10
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
The power supply current and voltage values provided in Table 4 can also be used to help
determine power availability for each voltage channel. These values can be used in conjunction
with performance monitor counters and the information provided in Table 3 to determine the
effects of adding additional components to your system.
TABLE 4
TYPICAL POWER SUPPLY VOLTAGE, CURRENT,
AND POWER VALUES
Voltage Range Low Range
(120V) Full
Load Current
Limit
High Range
(240V) Full
Load Current
Limit
Power Limit
Low High
12.25V +/-2% 20 Amps 37 Amps 245W 453W
5.1V +/- 3% 32 Amps 39 Amps 163W 199W
3.3V +/- 5% 18 Amps 27 Amps 59W 89W
To make the power wattage per channel data provided in Table 4 more practical for your
configuration, you can substitute the output voltage values in Table 4 with the values obtained
from the channel voltage performance counter in PerfMon (see Figure 3, page 12). Multiply the
voltage by the full load current to get approximate power available per channel for your system
when fully loaded. For example:
Channel Voltage (V) x Full Load Current (A) = Power Per Channel (W)
12.42V x 20A = 248W
The new table values using performance counter data from Figure 3, page 12 are shown in Table 5.
TABLE 5
NEW POWER SUPPLY VOLTAGE, CURRENT AND
POWER VALUES
Voltage Avg.
(Value Obtained
from PerfMon)
Low Range
(120V) Full
Load Current
Limit
High Range
(240V) Full
Load Current
Limit
Power
Low High
12.45 Volts 20 Amps 37 Amps 249W 461W
5.12 Volts 32 Amps 39 Amps 164W 200W
3.34 Volts 18 Amps 27 Amps 60W 90W
The new power wattage values can be substituted for the theoretical values provided in Table 6.
The new results yield actual power consumption per channel values for the server being used. This
provides you with data realistic to your environment to help determine redundancy.

WHITEPAPER (cont.)
11
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
ANALYZING PERFORMANCE COUNTERS USING
PERFORMANCE MONITOR
The following graphs are based on a ProLiant 6000 server with typical load applied. This
configuration consisted of ample disk access, minimal network access, extensive video activity,
and heavy CPU usage. The following options were installed for Figures 2 and 3:
•12 4.3-GB Hard Drives
•5 PCI Network controllers
•2 EISA Network controllers
•4 PCI Smart-2SL SCSI array controllers
•1 Power Supply
•1 ProLiant Storage System
Note: All hardware components used for testing are Compaq-provided options, either standard on
the ProLiant 6000 server or available for purchase through Compaq.
Figure 2: Power Usage Chart
The following conclusions can be derived from Figure 2:
q%12V channel power capacity = 30%
q%3V channel power capacity = 6%
q%5V channel power capacity = 78%
%12V PWR
%3V
PWR
%5V PWR
PWR
capac
ity PWR
Redun
dancy

WHITEPAPER (cont.)
12
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
q%Power Capacity = 64%
qRedundancy = 0
Only one power supply has been installed and the server is not redundant.
Figure 3 will be used for the purpose of interpreting the data. Changes made to the initial load are
additional hard disk usage, extensive floppy drive usage, heavy network access from 50 clients
applied and an additional power supply has been inserted.
Figure 3: Power Supply Counters Report
Determining Redundancy
Redundancy can be easily determined by evaluating the redundancy performance counter. A value
of 100 indicates redundancy and 0 means the power subsystem is not redundant.
Note: The current measurement circuitry of the power supply is not accurate below 20% of full
scale. This means there will be slight inaccuracy in current measurements in lightly loaded
systems.
Power Predictions Before Adding Components
You can get a general idea of the effect the addition of a component will have on your system if
you know the current consumed by a component and the voltage channel it will use. This
information may be obtained from a label on the actual component, the hardware specification for
the component, or by measuring the value once inserted into a functional system. Table 6
illustrates the approximate maximum power and current available for each channel and the number
of power supplies necessary when these values are exceeded. Adding the value to the appropriate

WHITEPAPER (cont.)
13
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
channel will show the impact of adding a component and whether an additional power supply will
be necessary.
TABLE 6
POWER SUPPLY (PS) REDUNDANCY DETERMINATION
Channel Total Consumption
PS 1 value + PS 2 value + PS 3 value
# of PS’s Needed
for Redundancy
a) 12V channel power ⇒⇒
and
b) 5V channel power ⇒⇒
Less than 245 watts +/- 2%
Less than 163 watts +/- 3% ⇒⇒2
a) 12V channel power ⇒⇒
and
b) 5V channel power ⇒⇒
Greater than 245 watts +/- 2%
Greater than 163 watts +/- 3% ⇒⇒3
a) 12V channel current ⇒⇒
and
b) 5V channel current ⇒⇒
Less than 20 amps +/- 2%
Less than 32 amps +/- 3% ⇒⇒2
a) 12V channel current ⇒⇒
and
b) 5V channel current ⇒⇒
Greater than 20 amps +/- 2%
Greater than 32 amps +/- 3% ⇒⇒3
You can multiply the current by the voltage for each channel; the result will be the estimated
increase in power consumption. The product of the multiplication can be added to the value for the
appropriate channel power counter in the performance monitor. The example below predicts
power consumption on a floppy drive that consumes .7 amps of current on the 5V channel when a
typical load has been applied.
Example 1: Calculations to predict power consumption on the 5V channel, values used are from Figure 3.
1. Calculate the total power being consumed on the specified channel
PS(total) = PS1 + PS2 + PS3
PS(total) = 73.7 W + 76 W + 0 = 149.7 W
2. Calculate the power that will be used by the new component.
Component Power Usage (W) = voltage (V) x current (A)
Component Power Usage (W) = 5.1 V x .7 A = 3.57 W
3. Calculate the total power consumption after the component is added
Power Usage after Component Addition = PS(total) + Component Power Usage
Power Usage after Component Addition = 149.7 W + 3.57 W = 153.27 W
4. Compare the result to Table 6 Power Supply Redundancy Determination to see if it will be necessary to add another power supply
for redundancy.
5V channel power is less than 163 watts. The power supplies will still be redundant after adding the floppy drive.

WHITEPAPER (cont.)
14
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Note: Unless the value you are using has been measured in a system with load applied, your
results are theoretical. The actual amount of power consumed will vary.
Event Logging
When a power supply is inserted or removed, you receive two alerts on the LCD display on the
ProLiant 6000 and two Windows NT Event log warning messages. When a power supply is
inserted the LCD displays:
POWER SUPPLY INSERTED
When a power supply is removed, it displays:
POWER SUBSYSTEM NO LONGER REDUNDANT
Followed by:
POWER SUPPLY REMOVED
When a power supply is inserted, the Windows NT Event Log displays:
Event ID: 4157 Event ID: 4154
Source: SysMgmt Source: SysMgmt
Type: Warning Type: Warning
Description: The Compaq Systems Management
Driver has detected that the power sub-
system is redundant
Description: The Compaq Systems Management Driver has
detected that a power supply (Power Supply
#x) has been inserted.
When a power supply is removed, the Windows NT Event Log displays:
Event ID: 4154 Event ID: 4152
Source: SysMgmt Source: SysMgmt
Type: Warning Type: Warning
Description: The Compaq Systems Management
Driver has detected that the power sub-
system is no longer redundant
Description: The Compaq Systems Management Driver has
detected that a power supply (Power Supply
#x) has been removed.

WHITEPAPER (cont.)
15
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Setting Alerts
You can monitor several counters simultaneously using Performance Monitor. When a counter
exceeds a given value, the date and time of the event are recorded in the Alert window of PerfMon
and you can set the option to log an event in the Application Log of Event Viewer.
Figure 4: Alert Options
An alert file holds a total of one thousand events, after which the oldest event is discarded as each
new one is added. Each alert value is usually an average over the last two data reads, which are
separated by the length of the time interval.

WHITEPAPER (cont.)
16
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
When an alert occurs while you are not in the Alert view, an alert icon appears in the status bar
showing the number of alerts that have occurred since you were last in the Alert view (see Figure
5).
Figure 5: Alert Window
A threshold value must be supplied for each counter you want an alert on. For power supply
management purposes, alerts can be set to monitor the % (voltage (V)) channel power capacity
performance counter. This will allow you to be alerted before the power supply subsystem is no
longer redundant. If the % (voltage (V)) channel power capacity value exceeds 50%, the power
supply subsystem is not redundant. For example: if the %5V channel power capacity is greater
than 50 then the system is not redundant; if it is less than 50, the system is redundant. Therefore, if
you set the alert threshold value over 45%, you will receive notification before the system is no
longer redundant.
Figure 5 shows a threshold (trigger) value of 45% for the %12V channel power capacity, %5V
channel power capacity, %3V channel power capacity, and the % Power capacity performance
counters. On 5/22/97 at 8:09 a.m. the %5V channel power capacity exceeded 45%, the data value
that was read was 77%. The alert interval is set to the default value of 5 seconds. The specified
counters will be checked for the alert condition every 5 seconds.
Date
Time
Actual
Value Trigger value
Counter

WHITEPAPER (cont.)
17
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Power Consumption Test Scenarios
Table 7 provides information on Compaq ProLiant 6000 servers tested under maximum load
conditions. The following options were standard in all configurations:
•4 Processors
•3.3-GB RAM
•1 Monitor
•1 Keyboard and Mouse
•1 Floppy drive
•1 CD-ROM drive
•2 DLT 7000 Tape drives
TABLE 7
COMPAQ PROLIANT 6000 POWER SUPPLY REDUNDANCY
SYSTEM CONFIGURATIONS WITH MAXIMUM LOADS APPLIED
Components Configuration 1 Configuration 2 Configuration 3 Configuration 4
No. of EISA/PCI expansion boards 9 11 11 6
No. of hard drives 6 18 12 6
Input voltage 100V – 120V 200V – 240V 100V – 120V 200V – 240V
No. of power supplies recommended
for redundancy 2 2 3 2

WHITEPAPER (cont.)
18
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Table 8 provides power supply recommendations for Compaq ProLiant 6000 servers tested under
typical load conditions. The following options are considered standard for all recommendations:
•1 Monitor
•1 Keyboard and mouse
•1 Floppy drive
•1 CD-ROM drive
•1 ProLiant Storage System (fully loaded)
TABLE 8
POWER SUPPLY RECOMMENDATIONS
Components Configuration 1 Configuration 2 Configuration 3
No. of Processors UP TO 4UP TO 4UP TO 4
No. of EISA/PCI expansion boards UP TO 11 UP TO 9MAXIMUM
Memory 64MB – 4GB 64MB – 4GB 64MB – 4GB
No. of hard drives UP TO 18 UP TO 18 MAXIMUM
Additional removable media UP TO 2 0 MAXIMUM
Input voltage 200V – 240V 100V- 120V 200V – 240V
No. of Power Supplies
recommended for redundancy 223
Considerations to Eliminate Single Points of Failure
The hot-pluggable redundant power supplies provide the ProLiant 6000 with consistent, reliable
power to operate your system. The N+1 redundancy scheme eliminates the possibility of
overloading the power supply by adding too many power-consuming devices. Under maximum
load conditions, a fully loaded ProLiant 6000 will not require more than two power supplies with a
third to provide redundancy. However, there are other situations that can affect the power supplied
to your computer. Power failures, surges, and sags can cause the system to crash and can damage
the electronics. For this reason, apply AC input to power modules from different electrical sources
whenever possible.
To protect against damage and loss of data from temporary power outages, consider the purchase
of multiple uninterruptible power supplies for individual power modules, critical systems, and the
network itself, including hubs, bridges, and routers. Windows NT has uninterruptible power
supply (UPS) support on individual computers. These UPSs typically provide power for five to 20
minutes, which is long enough for Windows NT to do an orderly shutdown when power fails. If
there is a history of frequent or prolonged power outages, you should investigate ways to provide
power for your critical computers other than from your local power company. To prevent power
surges that can destroy your data, obtain quality individual power surge suppressors for each power
module.
If the weather at the location of your company requires heating or cooling within the building to
keep your computers and network devices within required operating temperatures, consider
making the climate control system fault-tolerant as well.

WHITEPAPER (cont.)
19
422A/0697ECG
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
SUMMARY
The ProLiant 6000 hot-pluggable N+1 redundant power supplies greatly increase the reliability and
availability of the server. This paper was designed to describe a means of monitoring power
consumption and utilization on a Compaq ProLiant 6000 using an application inherent to the
operating system, Windows NT Performance Monitor. However, the intent was not to imply that
PerfMon was to be used for comprehensive fault management. At this time, the only way to get
comprehensive fault management, including pre-failure alerting for the power supply, is by using
Compaq Insight Manager.