IBM BladeCenter JS20 Operating instructions

BladeCenter JS20
Ty pe 8842
Hardware Maintenance Manual and
Troubleshooting Guide


BladeCenter JS20
Ty pe 8842
Hardware Maintenance Manual and
Troubleshooting Guide


Notes
vBefore using this information and the product it supports, read Appendix B, “Safety information,” on page 163 and
“Notices” on page 197
vThe most recent version of this document is available at http://www.ibm.com/pc/support/.
16th Edition (June 2006)
©Copyright International Business Machines Corporation 2003. All rights reserved.
US Government Users Restricted Rights –Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

About this manual
This manual contains diagnostic information, asymptom-to-FRU index, service
information, error codes, error messages, and configuration information for the IBM
®
BladeCenter
® JS20 Type 8842 blade server.
Important safety information
Be sure to read all caution and danger statements in this book before performing
any of the instructions; see Appendix B, “Safety information,” on page 163.
Leia todas as instruções de cuidado eperigo antes de executar qualquer operação.
Prenez connaissance de toutes les consignes de type Attention et Danger avant de
procéder aux opérations décrites par les instructions.
Lesen Sie alle Sicherheitshinweise, bevor Sie eine Anweisung ausführen.
Accertarsi di leggere tutti gli avvisi di attenzione edi pericolo prima di effettuare
qualsiasi operazione.
Lea atentamente todas las declaraciones de precaución ypeligro ante de llevar a
cabo cualquier operación.
WARNING: Handling the cord on this product or cords associated with accessories
sold with this product, will expose you to lead, achemical known to the State of
California to cause cancer, and birth defects or other reproductive harm. Wash
hands after handling.
ADVERTENCIA: El contacto con el cable de este producto ocon cables de
accesorios que se venden junto con este producto, pueden exponerle al plomo, un
elemento químico que en el estado de California de los Estados Unidos está
considerado como un causante de cancer yde defectos congénitos, además de
otros riesgos reproductivos. Lávese las manos después de usar el producto.
Online support
You can download the most current firmware update and device driver files from
http://www.ibm.com/pc/support.
©Copyright IBM Corp. 2003 iii

iv BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

Contents
About this manual ....................... iii
Important safety information .................... iii
Online support ......................... iii
Chapter 1. Introduction ......................1
Related documentation ......................3
The IBM BladeCenter Documentation CD ...............4
Hardware and software requirements ................4
Using the Documentation Browser .................4
Notices and statements used in this document..............5
Features and specifications.....................6
BladeCenter JS20 specifications for non-NEBS/ETSI environments .....6
BladeCenter JS20 specifications for NEBS/ETSI environments.......7
Preinstallation checklist ......................9
Checking the status of the media tray ................10
Chapter 2. Blade server power, controls, and indicators ........13
Turning on the blade server ....................13
Turning off the blade server ....................14
Blade server controls and LEDs ..................14
Chapter 3. Configuration.....................17
Using the command-line interface ..................18
Configuring the Gigabit Ethernet controller ...............18
Blade server Ethernet controller enumeration ..............19
Chapter 4. Problem determination procedures for AIX and Linux .....21
Problem determination ......................21
Obtaining an SRN/SRC or error code ................22
Chapter 5. AIX online, standalone and verification procedures ......25
Performing AIX online concurrent mode diagnostics for problem determination 25
Running the standalone diagnostics from CD-ROM ...........25
Performing AIX online concurrent mode diagnostics for previous diagnostic
results: service aids ......................28
Performing AIX online concurrent mode diagnostics for system verification ...29
Verifying the replacement part using AIX diagnostics ...........30
Chapter 6. Running aSerial Over LAN session ............33
Selecting the command target ...................34
Starting the command-line interface .................34
Establishing aTelnet connection .................35
Establishing aSecure Shell (SSH) connection ............35
Starting an SOL session .....................35
Ending an SOL session......................36
Chapter 7. Diagnostics .....................37
General checkout ........................37
Checkout procedure .......................38
Diagnostic tools overview .....................39
POST ............................40
Checkpoints .........................40
Accessing the Linux system error log................40
©Copyright IBM Corp. 2003 v

Service aids and the Linux system error log .............40
FRU/CRU isolation .......................46
Error symptom charts ......................46
Light path diagnostics ......................46
Memory errors .........................47
Recovering the system firmware code ................48
Recovery of system firmware code using service aids .........48
Starting the TEMP image ....................48
Recovering the TEMP image from the PERM image ..........49
Updating the blade server firmware .................50
Determination of current server firmware levels ............51
Updating the blade server service processor .............51
Update and manage system flash using Linux service aids........51
Updating the system flash using Linux ..............51
Verifying the system firmware levels using Linux ..........52
Update and manage system flash using AIX diagnostics.........52
Updating the system flash using AIX ...............52
Committing the temporary firmware image using AIX .........53
Verifying the system firmware levels using AIX ...........53
Recovering the system firmware code ................54
Recovery of system firmware code using service aids .........55
Starting the backup image....................55
Recovering the primary image ..................56
Chapter 8. General AIX and xSeries standalone diagnostic information 59
Information for general diagnostic systems running the AIX operating system 59
AIX operating system message files ................59
CE login ...........................59
Missing resources ........................60
Automatic diagnostic tests.....................60
Configuration program .....................60
Diagnostic programs ......................61
Error log analysis ........................61
Introducing tasks and service aids ..................62
Task and service aid functions ..................62
AIX automatic error log analysis (diagela) ..............62
Error log analysis .......................63
Log repair action .......................63
Tasks (service aids) ......................63
Download microcode.....................64
Update and manage system flash ................65
Using the standalone CD-ROM and online current diagnostics ......67
Standalone and online diagnostics operating considerations .......67
Running online diagnostics ...................67
Running the online diagnostics in concurrent mode ..........68
Running standalone diagnostics from amanagement (NIM) server ......68
NIM server configuration ....................69
Client configuration and booting ERserver standalone diagnostics from the
NIM server ........................69
Chapter 9. Installing options ...................71
Installation guidelines ......................71
System reliability guidelines ...................71
Handling static-sensitive devices .................71
Removing the blade server from the BladeCenter unit ..........73
Opening the blade server cover...................74
vi BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

Removing the blade server bezel assembly ..............75
Installing IDE hard disk drives ...................75
Installing memory modules ....................77
Installing an I/O expansion card...................79
Ethernet controller, switch module, and cabling requirements ........82
Replacing the battery ......................83
System board .........................86
System board component locations ................86
System-board LED locations ...................87
Replacing the system board ...................87
Completing the installation.....................90
Installing the blade-server bezel assembly ..............90
Closing the blade server cover ..................92
Input/output connectors and devices .................92
Chapter 10. Symptom-to-FRU index ................93
Firmware checkpoint (progress) codes ................94
Firmware error codes ...................... 102
Service request numbers..................... 108
Linux service aid ″diagela″................... 109
Using the SRN list ...................... 109
Service request number ................... 109
Source of SRN ...................... 109
Failing Function Codes ................... 109
Description and action ....................110
Using the SRN list .....................110
SRN tables .........................110
AIX SRNs 101-711 through 2D02................110
SRNs A00-(x)xxx through A1D-(x)xxx .............. 121
Failing Function Codes (FFCs) ................ 141
FFC table ........................ 142
Light path diagnostics LEDs ................... 145
Error symptoms ........................ 145
CD drive problems ...................... 146
Diskette drive problems .................... 147
General problems ...................... 147
Hard disk drive problems.................... 147
Memory problems ...................... 148
Microprocessor problems.................... 148
Monitor problems ...................... 148
Mouse problems ....................... 149
Network connection problems .................. 150
Option problems ....................... 150
Power problems ....................... 151
Service processor problems................... 151
Software problems ...................... 152
Startup problems....................... 152
Service processor error codes ................... 152
Boot problem resolution ..................... 153
Physical location codes ..................... 154
Undetermined problems ..................... 156
Problem determination tips .................... 158
Chapter 11. Parts listing, Type 8842 ................ 159
Appendix A. Getting help and technical assistance .......... 161
Contents vii

Before you call ........................ 161
Using the documentation..................... 161
Getting help and information from the World Wide Web ......... 162
Software service and support ................... 162
Hardware service and support ................... 162
Appendix B. Safety information ................. 163
General safety ........................ 163
Electrical safety ........................ 164
Safety inspection guide ..................... 165
Grounding requirements ..................... 166
Safety notices (multi-lingual translations) ............... 166
Notices ........................... 197
Edition notice ......................... 197
Trademarks.......................... 198
Important notes ........................ 198
Product recycling and disposal .................. 199
Battery return program ..................... 199
Electronic emission notices .................... 200
Federal Communications Commission (FCC) statement ........ 200
Industry Canada Class Aemission compliance statement ........ 200
Australia and New Zealand Class Astatement ............ 200
United Kingdom telecommunications safety requirement ........ 200
European Union EMC Directive conformance statement ........ 201
Taiwanese Class Awarning statement ............... 201
Chinese Class Awarning statement ................ 201
Japanese Voluntary Control Council for Interference (VCCI) statement 201
Index ............................ 203
viii BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

Chapter 1. Introduction
The IBM BladeCenter JS20 Type 8842, also known as the blade server, is based
on the IBM Power Architecture
™ technologies.
The BladeCenter JS20 Type 8842 is compatible with IBM BladeCenter units. This
high-performance blade server is well-suited for networking environments that
require outstanding microprocessor performance, efficient memory management,
flexibility, and reliable data storage.
Notes:
1. In this document, the term BladeCenter unit refers to any IBM BladeCenter,
BladeCenter T, or other BladeCenter-class chassis model, except where
specifically indicated otherwise.
2. The number of blade servers your BladeCenter unit supports depends on the
type of BladeCenter unit. For example, the IBM Eserver BladeCenter Type
8677 supports up to 14 hot-swap blade servers; the BladeCenter TTypes 8720
and 8730 support up to 8hot-swap blade servers. See the documentation that
comes with the BladeCenter unit for more information. For more information
about determining the power requirements for the blade server, see the IBM
Eserver BladeCenter Power Module Upgrade Guidelines Technical Update on
the IBM BladeCenter Documentation CD.
3. The types and capacities of power modules your BladeCenter unit supports,
which affects the number of blade servers you can install in the BladeCenter
unit, depends on the type of BladeCenter unit. See the documentation that
comes with the BladeCenter unit for more information.
©Copyright IBM Corp. 2003 1

Release
levers
Release
button
Notes:
vIn aBladeCenter unit that supports multiple types of power modules with different
capacities, such as the BladeCenter Type 8677, the maximum number of blade
servers that the BladeCenter unit supports varies by the wattage of the power
modules that are installed in the BladeCenter unit. For more information about
determining the power requirements for the blade server, see the IBM Eserver
BladeCenter Power Module Upgrade Guidelines Technical Update on the World
Wide Web at http://www.ibm.com/support/.
vTwo power modules are required to support the blade servers in power domain A
in the BladeCenter unit. The following blade bays are in power domain A:
–Blade bays 1through 6in aBladeCenter Type 8677 or similar unit
–Blade bays 1through 5in aBladeCenter Tunit
If you install blade servers in these blade bays, you must install power modules
in power-module bays 1and 2in the BladeCenter unit.
vTwo additional power modules are required to support the blade servers in power
domain Bin the BladeCenter unit. The following blade bays are in power domain
B:
–Blade bays 7through 14 in aType 8677 or similar BladeCenter unit
–Blade bays 6through 8in aBladeCenter Tunit
If you install blade servers in these blade bays, you must install power modules
in power-module bays 3and 4in the BladeCenter unit.
vMake sure that you review and understand the design of the BladeCenter unit.
Use this information to help you determine your system configuration
requirements and the bays and connectors where you will install or remove
2BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

components. For additional information, see the BladeCenter unit Installation and
User’s Guide on the Documentation CD for your BladeCenter unit, or go to
http://www.ibm.com/support/ on the World Wide Web.
Related documentation
This Hardware Maintenance Manual and Troubleshooting Guide is provided in
Portable Document Format (PDF) on the IBM BladeCenter JS20 Documentation CD
that comes with the IBM BladeCenter JS20 Type 8842. It contains information to
help you solve problems yourself or to provide helpful information to aservice
technician.
In addition to this Hardware Maintenance Manual and Troubleshooting Guide,the
following information is provided in PDF on the IBM BladeCenter Documentation
CD that comes with the IBM BladeCenter JS20 Type 8842:
vSafety Information: This document contains translated caution and danger
statements. Each caution and danger statement that appears in the
documentation has anumber that you can use to locate the corresponding
statement in your language in the Safety Information document.
vBladeCenter JS20 Type 8842 Installation and User’s Guide: This document
contains instructions for setting up the server, contains basic instructions for
installing some options; and provides general information about the server,
including information about features and how to configure the server.
vBladeCenter and BladeCenter TManagement Module User’s Guide:This
document contains instructions for installing, starting, configuring, and using the
BladeCenter unit management module. This document also provides general
information about the management module and contains adescription of the
management module features.
vBladeCenter and BladeCenter TManagement Module Command-Line Interface
Reference Guide:This document contains instructions for installing, starting,
configuring, and using the IBM Eserver BladeCenter management-module
command-line interface. This document also provides general information about
the BladeCenter management-module command-line interface and contains a
description of its features.
vBladeCenter or BladeCenter TManagement Module Installation Guide:This
document contains instructions for installing, setting up, starting, and configuring
the BladeCenter unit management module.
vBladeCenter unit Installation and User’s Guide:This document contains
instructions for setting up and configuring the BladeCenter unit and basic
instructions for installing some options in the BladeCenter unit. It also contains
general information about the BladeCenter unit.
vBladeCenter unit Hardware Maintenance Manual and Troubleshooting Guide:
This document contains the information to help you solve BladeCenter unit
problems yourself, and it contains information for service technicians.
vBladeCenter unit Rack Installation Instructions:This document contains
instructions for installing the BladeCenter unit in arack.
vIBM 4-Port Gb Ethernet Switch Module for BladeCenter Installation and User’s
Guide:This document contains instructions for setting up, installing, and
configuring the IBM 4-Port Gb Ethernet Switch Module for BladeCenter and a
description of the switch-module features.
vNortel Networks Layer 2-7 GbE Switch Module for IBM BladeCenter Installation
Guide:This document contains instructions for setting up, installing, and
Chapter 1. Introduction 3

configuring the Nortel Networks Layer 2-7 GbE Switch Module for IBM Eserver
BladeCenter and adescription of the switch-module features.
vIBM BladeCenter 2-Port Fibre Channel Switch Module Installation Guide: This
document contains instructions for setting up, installing, and configuring the IBM
Eserver BladeCenter 2-Port Fibre Channel Switch Module, and adescription of
the switch module features.
vTechnical Update for IBM BladeCenter Fiber Channel Switch Module version
1.00: This document contains updated information about the IBM Eserver
BladeCenter 2-Port Fibre Channel Switch Module.
vIBM Eserver BladeCenter and BladeCenter TSerial Over LAN Setup Guide:
This document contains instructions for establishing aSerial Over LAN (SOL)
connection, enabling the SOL feature, and configuring the blade server so that
you can run SOL sessions and use the BladeCenter management-module
command-line interface. This document also contains instructions for updating
and configuring BladeCenter components for SOL operation using the
management-module Web-based management and configuration program.
vIBM Eserver BladeCenter Power Module Upgrade Guidelines Technical Update:
This document contains information that helps you determine the power
requirements for the blade server.
Additional documentation might be included on the IBM BladeCenter Documentation
CD.
The IBM BladeCenter Documentation CD
The IBM BladeCenter JS20 blade server Documentation CD contains
documentation for the blade server in Portable Document Format (PDF) and
includes the IBM Documentation Browser to help you find information quickly.
Hardware and software requirements
The IBM Documentation CD requires the following minimum hardware and
software:
vMicrosoft
® Windows NT ® 4.0 (with Service Pack 3or later), Windows ® 2000, or
Red Hat
® Linux ®
v100 MHz microprocessor
v32 MB of RAM
vAdobe Acrobat Reader 3.0 (or later) or xpdf, which comes with Linux operating
systems
Note: Acrobat Reader software is included on the CD, and you can install it
when you run the Documentation Browser.
Using the Documentation Browser
Use the Documentation Browser to browse the contents of the CD, read brief
descriptions of the documents, and view documents using Adobe Acrobat Reader or
xpdf. The Documentation Browser automatically detects the regional settings in use
in the system and displays the documents in the language for that region (if
available). If adocument is not available in the language for that region, the English
version is displayed.
Use one of the following procedures to start the Documentation Browser:
vIf Autostart is enabled, insert the CD into the CD drive. The Documentation
Browser starts automatically.
4BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

vIf Autostart is disabled or is not enabled for all users:
–If you are using aWindows operating system, insert the CD into the CD drive
and click Start --> Run.In the Open field, type
x:\win32.bat
(where xis the drive letter of the CD drive), and click OK.
–If you are using aLinux operating system, insert the CD into the CD drive;
then, run the following command from the /mnt/cdrom directory:
sh runlinux.sh
Select the server from the Product menu. The Available Topics list displays all the
documents for the server. Some documents might be in folders. Aplus sign (+)
indicates each folder or document that has additional documents under it. Click the
plus sign to display the additional documents.
When you select adocument, adescription of the document appears under Topic
Description.To select more than one document, press and hold the Ctrl key while
you select the documents. Click View Book to view the selected document or
documents in Acrobat Reader or xpdf. If you selected more than one document, all
the selected documents are opened in Acrobat Reader or xpdf.
To search all the documents, type aword or word string in the Search field and
click Search.The documents in which the word or word string appears are listed in
order of the most occurrences. Click adocument to view it, and press Crtl+F to use
the Acrobat search function or Alt+F to use the xpdf search function within the
document.
Click Help for detailed information about using the Documentation Browser.
Notices and statements used in this document
The caution and danger statements that appear in this document are also in the
multilingual Safety Information document, which is on the IBM BladeCenter unit or
blade server Documentation CD. Each statement is numbered for reference to the
corresponding statement in the Safety Information document.
The following notices and statements are used in the documentation:
vNotes: These notices provide important tips, guidance, or advice.
vImportant: These notices provide information or advice that might help you avoid
inconvenient or problem situations.
vAttention: These notices indicate potential damage to programs, devices, or
data. An attention notice is placed just before the instruction or situation in which
damage could occur.
vCaution: These statements indicate situations that can be potentially hazardous
to you. Acaution statement is placed just before the description of apotentially
hazardous procedure step or situation.
vDanger: These statements indicate situations that can be potentially lethal or
extremely hazardous to you. Adanger statement is placed just before the
description of apotentially lethal or extremely hazardous procedure step or
situation.
Chapter 1. Introduction 5

Features and specifications
This section provides asummary of the features and specifications of your blade
server. Through the BladeCenter unit management module, you can view the blade
server firmware code and other hardware configuration information.
Note: Power, cooling, removable-media drives, external ports, and advanced
system management are provided by the IBM Eserver BladeCenter unit.
For more information, see the Installation and User’s Guide for your
BladeCenter unit.
BladeCenter JS20 specifications for non-NEBS/ETSI environments
The following table provides asummary of the features and specifications of the
BladeCenter JS20 Type 8842 in anon-NEBS/ETSI environment. This includes
model-specific information.
Microprocessor:
Two IBM PowerPC
® microprocessors
with 512 KB ECC L2 cache
Memory:
vFour double-data rate (DDR)
PC2700 sockets
vMinimum: 512 MB
vMaximum: 4or 8GB (depends on
the blade server model) *
IDE devices:
vSupport for up to two internal
integrated drive electronics (IDE)
2.5-inch hard disk drives
or
vSupport for one internal IDE
2.5-inch hard disk drive in IDE
connector 1and one optional I/O
expansion card in IDE connector 2
Note: Installing an I/O expansion
card increases network
connections.
Size:
vHeight: 24.5 cm (9.7 inches)
vDepth: 44.6 cm (17.6 inches)
vWidth: 2.9 cm (1.14 inches)
vMaximum weight: 5.4 kg (12 lb)
Integrated functions:
vOne dual-port Gigabit Ethernet
controller
vLight path diagnostics
vLocal service processor
vOne IDE hard disk drive controller
with two channels
vRS-485 interface for
communication with BladeCenter
management module
vSerial Over LAN (SOL)
Predictive Failure Analysis
® (PFA)
alerts:
vMicroprocessors
vMemory
vHard disk drives
Environment:
vAir temperature:
–Blade server on: 10° to 35°C
(50° to 95°F). Altitude: 0to 914
m(0 to 3000 ft)
–Blade server on: 10° to 32°C
(50° to 90°F). Altitude: 914 mto
2133 m(3000 ft to 7000 ft)
–Blade server off: -40° to 60°C
(40° to 140° F)
v
Humidity:
–Blade server on: 8% to 80%
–Blade server off: 5% to 80%
Electrical input:
vInput voltage: 12 Vdc
*For information about dual inline memory module (DIMM) type and supported DIMM size, see “Installing memory
modules” on page 77.
Note: The operating system in the blade server must provide USB support for the
blade server to recognize and use the CD drive and diskette drive. The
BladeCenter unit uses USB for internal communications with these devices.
6BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

BladeCenter JS20 specifications for NEBS/ETSI environments
The following table provides asummary of the features and specifications of the
BladeCenter JS20 Type 8842 in aNEBS/ETSI environment. This includes
model-specific information.
Microprocessor:
vTwo IBM Power PC
®
microprocessors with 512 KB ECC
L2 cache
Memory:
vFour DDR PC2700 sockets
vMinimum: 1GB
vMaximum: 4or 8GB (depends on
the blade server model)
IDE devices:
vNEBS application does not support
internal drives
Size:
vHeight: 24.5 cm (9.7 inches)
vDepth: 44.6 cm (17.6 inches)
vWidth: 2.9 cm (1.14 inches)
vMaximum weight: 5.4 kg (12 lb)
Integrated functions:
vOne dual-port Gigabit Ethernet
controller
vLight path diagnostics
vLocal service processor
vOne IDE hard disk drive controller
with two channels
vRS-485 interface for
communication with BladeCenter
management module
vSerial over LAN
Predictive Failure Analysis (PFA)
alerts:
vMicroprocessors
vMemory
Environment (NEBS):
vAir temperature:
–Blade server on: 5° to 40°C (41°
to 104°F). Altitude: -60 to 1800 m
(-197 to 6000 ft)
–Blade server on (short term): -5°
to 55°C (23° to 131°F) Altitude:
-60 to 1800 m(-197 to 6000 ft)
–Blade server on: 5° to 30°C (41°
to 86°F). Altitude: 1800 to 4000
m(6000 to 13 000 ft)
–Blade server on (short term): -5°
to 45°C (23° to 113°F). Altitude:
1800 to 4000 m(6000 to 13 000
ft)
–Blade server off: -40° to 70°C
(-40° to 158°F)
v
Humidity:
–Blade server on: 5% to 80%
–Blade server on (short term): 5%
to 90% but not to exceed 0.024
kg water/kg of dry air
–Blade server off: uncontrolled
Note: "Short term" refers to aperiod
of not more than 96 consecutive hours
and atotal of not more than 15 days in
1year. (This refers to atotal of 360
hours in any year, but no more than 15
occurrences during that 1-year period.)
Electrical input:
vInput voltage: 12 Vdc
*For information about DIMM type and supported DIMM size, see “Installing memory modules” on page 77.
Notes:
1. The operating system in the blade server must provide USB support for the
blade server to recognize and use the CD drive and an external diskette drive.
The BladeCenter Tunit uses USB for internal communication with these
devices.
Chapter 1. Introduction 7

2. BladeCenter JS20 models that are designed for the NEBS environment contain
apower-management capability that provides the maximum possible operating
time for your system. Power management is invoked only when the blade server
is installed in aBladeCenter Tunit and only under the short term extended
thermal conditions that are described in the preceding table as "short term" in
the high end of the NEBS extended temperature range, 40° to 55°C (104° to
131°F). Instead of shutting down or failing in short term extended thermal
conditions, the JS20 blade server automatically reduces the frequency of the
processor to maintain acceptable thermal levels. The processor frequency
automatically returns to normal as thermal conditions improve. The BladeCenter
management module is notified when power management starts and again
when it stops.
The following entries are made in the event log:
vFrequency throttling process is now active.
(This message indicates that power reduction is in effect.)
vFrequency throttling process is now idling.
(This message indicates that power reduction was previously invoked but is
no longer in effect.)
Do not restart the blade server when power reduction is in effect.
3. Some applications are sensitive to processor frequency changes. Check with
your application vendors to determine if there are any possible impacts to your
applications from the effects of the JS20 blade server power-management
capability in the short term extended thermal conditions of the NEBS
environment.
8BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide

Preinstallation checklist
Before you can use the BladeCenter unit with the blade server, you must correctly
set up and configure the BladeCenter unit, and install and configure the required
components in the BladeCenter unit. Read Appendix B, “Safety information,” on
page 163, and the information in “Installation guidelines” on page 71, and review
the documentation that comes with each device and any applicable information in
the “Related documentation” on page 3.
If you have not already done so, perform the activities on the following checklist:
__ 1. Set up the rack in which you will install the BladeCenter unit.
__ 2. Install the BladeCenter unit in arack. For additional information, see the
Rack Installation Instructions that come with the BladeCenter unit.
__ 3. Install and configure the required BladeCenter unit components:
__ a. Make sure that the BladeCenter unit has adequate power to support
all the installed devices. The BladeCenter unit must contain either two
or four power modules. If necessary, on BladeCenter units that
support it, upgrade the power modules in the BladeCenter unit to
higher-capacity power modules. For additional information, see the
IBM Eserver BladeCenter Power Module Upgrade Guidelines
Technical Update.
__ b. Install and configure one or two management modules in the
BladeCenter unit.
__ c. Install and configure one or two Ethernet switch modules in the
BladeCenter unit.
To support the Serial Over LAN (SOL) feature on any blade server
that is installed in the BladeCenter unit:
vASOL-compatible Ethernet switch module must be installed in I/O
bay 1of the BladeCenter unit.
vBoth the BladeCenter unit and the Ethernet switch module must be
configured so that the SOL feature is enabled and set to operate on
the same virtual local area network (VLAN).
If you plan to install the operating system through the Ethernet
network, you also must install and configure asecond Ethernet switch
module in I/O bay 2of the BladeCenter unit.
Note: If you install other Ethernet switch modules, they do not have
to be the same type that you installed in I/O bay 1of the
BladeCenter unit.
__ d. Configure the BladeCenter unit for SOL operation as described in the
IBM Eserver BladeCenter and BladeCenter TSerial Over LAN Setup
Guide.
Verify that the firmware code for the BladeCenter unit, management
module, and Ethernet switch modules supports the SOL feature. If you
are not sure whether these devices come with this feature, see the
IBM Eserver BladeCenter and BladeCenter TSerial Over LAN Setup
Guide for additional information.
The SOL feature is required and must remain enabled for all
applicable devices, including the BladeCenter unit, management
module, and Ethernet switch modules.
__ 4. If the BladeCenter unit was shipped to you before June 2003, make sure
that:
Chapter 1. Introduction 9

__ a. The hardware and firmware in the BladeCenter unit are at the
supported levels for the blade server. Go to the IBM Support Web
site, http://www.ibm.com/support/, for additional information.
__ b. The BladeCenter unit has the correct customer interface card (CIC)
(see “Checking the status of the media tray”).
For illustrations and additional information, see the following related documentation
on the World Wide Web at http://www.ibm.com/support/:
vBladeCenter Type 8677 Rack Installation Instructions
vBladeCenter Type 8677 Installation and User’s Guide
vBladeCenter TTypes 8720 and 8730 Installation and User’s Guide
vBladeCenter T2-Post Rack Mount Kit Installation Instructions
vBladeCenter T4-Post and Universal Telco Frame (UTF) Rack Mount Kit
Installation Instructions
vIBM Eserver BladeCenter Power Module Upgrade Guidelines Technical Update
vBladeCenter Management Module Installation Guide
vBladeCenter TManagement Module Installation Guide
vBladeCenter and BladeCenter TManagement Module Command-Line Interface
Reference Guide
vIBM Eserver BladeCenter and BladeCenter TSerial Over LAN Setup Guide
vThe documentation that comes with the Ethernet switch module that you are
using; for example:
–IBM 4-Port Gb Ethernet Switch Module for BladeCenter Installation and User’s
Guide
–Nortel Networks Layer 2-7 GbE Switch Module for IBM BladeCenter
Installation Guide
Note: For more information, see “Related documentation” on page 3.
Checking the status of the media tray
If you received aBladeCenter unit other than aType 8677, this topic does not
apply.
Important: If you received aType 8677 BladeCenter unit before June 2003, the
customer interface card (CIC) in the media tray of the BladeCenter unit might need
to be replaced before the CD drive will work correctly with aBladeCenter JS20
Type 8842.
If you received aType 8677 BladeCenter unit before June 2003, start the
management-module Web interface and perform these steps to determine if the
CIC in your BladeCenter unit needs to be replaced:
1. In the navigation pane on the left side, select Monitors;then, select Hardware
VPD.
2. While looking at the “BladeCenter Hardware VPD” table in the right pane, find
the row for module name “Media Tray”.
3. Check the “FRU Number” column for the “Media Tray”.
4. If you see 59P6629, have the CIC replaced before installing aBladeCenter
JS20 Type 8842 in the BladeCenter unit.
10 BladeCenter JS20 Type 8842: Hardware Maintenance Manual and Troubleshooting Guide