IBM 71412RU User manual

IBM System x3850 M2 and System x3950 M2
Types7141and7233
User’s Guide


IBM System x3850 M2 and System x3950 M2
Types7141and7233
User’s Guide


Note: Before using this information and the product it supports, read the information in “Notices,” on page 79, the Warranty
Information document, and the IBM Safety Information and Environmental Notices and User Guide documents on the
Documentation CD.
Fifth Edition (October 2009)
© Copyright International Business Machines Corporation 2009.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Safety ............................v
Chapter 1. The System x3850 M2 and System x3950 M2 server ......1
Related documentation ......................1
Notices and statements in this document................2
Features and specifications.....................4
What your server offers ......................6
Reliability, availability, and serviceability ................8
IBM Director ..........................9
The UpdateXpress program ....................10
Server controls, connectors, LEDs, and power .............11
Front view..........................11
Rear view ..........................13
Server power features .....................15
Chapter 2. Installing optional devices................19
Server components .......................19
Memory-card DIMM connectors ..................21
Memory-card LEDs ......................21
Microprocessor-board connectors .................22
Microprocessor-board LEDs ...................23
Microprocessor-board jumpers ..................24
I/O-board connectors......................25
I/O-board LEDs........................25
I/O-board jumpers .......................26
SAS-backplane connectors ...................27
Installation guidelines ......................28
Limitations in a single-power-supply server operating at 110 V ac installation 29
System reliability guidelines ...................29
Working inside the server with the power on .............29
Handling static-sensitive devices .................30
Removing the cover and bezel ...................30
Installing a ServeRAID-MR10k SAS controller .............31
Installing an adapter .......................33
Installing a hot-swap power supply .................35
Installing a hot-swap hard disk drive .................36
Installing a DVD drive ......................38
Installing an internal removable flash drive...............38
Memory module ........................39
Active Memory ........................43
Adding and replacing a memory card................44
Installing DIMMs .......................46
Installing a microprocessor ....................50
Completing the installation.....................55
Connecting the cables .....................56
Updating the server configuration .................57
Chapter 3. Configuring the server .................59
Using the Configuration/Setup Utility program .............60
Starting the Configuration/Setup Utility program ............60
Configuration/Setup Utility menu choices ..............60
Passwords .........................66
Using the ServerGuide Setup and Installation CD ............68
© Copyright IBM Corp. 2009 iii

ServerGuide features .....................68
Setup and configuration overview .................68
Typical operating-system installation ................69
Installing your operating system without using ServerGuide .......69
Using the Boot Menu program ...................70
Configuring the Gigabit Ethernet controller ...............70
Using the baseboard management controller utility programs ........70
Using the configuration utility program ...............70
Using the firmware update utility program ..............71
Using the management utility program ...............73
Using the RAID configuration programs ................73
Using the LSI Logic Configuration Utility program ...........74
Using the LSI Logic MegaRAID Storage Manager program........75
Chapter 4. Updating IBM Director .................77
Appendix. Notices .......................79
Trademarks ..........................79
Important notes.........................80
Particulate contamination .....................81
Documentation format ......................81
Electronic emission notices ....................82
Federal Communications Commission (FCC) statement .........82
Industry Canada Class A emission compliance statement ........82
Avis de conformité à la réglementation d’Industrie Canada ........82
Australia and New Zealand Class A statement ............82
United Kingdom telecommunications safety requirement.........82
European Union EMC Directive conformance statement .........83
Taiwanese Class A warning statement ...............83
Germany Electromagnetic Compatibility Directive ...........83
People's Republic of China Class A warning statement .........84
Japanese Voluntary Control Council for Interference (VCCI) statement . . . 84
Korean Class A warning statement ................84
Index ............................85
iv IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

Safety
Before installing this product, read the Safety Information.
Antes de instalar este produto, leia as Informações de Segurança.
Pred instalací tohoto produktu si prectete prírucku bezpecnostních instrukcí.
Læs sikkerhedsforskrifterne, før du installerer dette produkt.
Lees voordat u dit product installeert eerst de veiligheidsvoorschriften.
Ennen kuin asennat tämän tuotteen, lue turvaohjeet kohdasta Safety Information.
Avant d’installer ce produit, lisez les consignes de sécurité.
Vor der Installation dieses Produkts die Sicherheitshinweise lesen.
Prima di installare questo prodotto, leggere le Informazioni sulla Sicurezza.
Les sikkerhetsinformasjonen (Safety Information) før du installerer dette produktet.
Antes de instalar este produto, leia as Informações sobre Segurança.
© Copyright IBM Corp. 2009 v

Antes de instalar este producto, lea la información de seguridad.
Läs säkerhetsinformationen innan du installerar den här produkten.
Important:
Each caution and danger statement in this document is labeled with a number. This
number is used to cross reference an English-language caution or danger
statement with translated versions of the caution or danger statement in the Safety
Information document.
For example, if a caution statement is labeled “Statement 1,” translations for that
caution statement are in the Safety Information document under “Statement 1.”
Be sure to read all caution and danger statements in this document before you
perform the procedures. Read any additional safety information that comes with the
server or optional device before you install the device.
vi IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

Statement 1:
DANGER
Electrical current from power, telephone, and communication cables is
hazardous.
To avoid a shock hazard:
vDo not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical
storm.
vConnect all power cords to a properly wired and grounded electrical
outlet.
vConnect to properly wired outlets any equipment that will be attached to
this product.
vWhen possible, use one hand only to connect or disconnect signal
cables.
vNever turn on any equipment when there is evidence of fire, water, or
structural damage.
vDisconnect the attached power cords, telecommunications systems,
networks, and modems before you open the device covers, unless
instructed otherwise in the installation and configuration procedures.
vConnect and disconnect cables as described in the following table when
installing, moving, or opening covers on this product or attached
devices.
To Connect: To Disconnect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlet.
5. Turn device ON.
1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
Safety vii

Statement 2:
CAUTION:
When replacing the lithium battery, use only IBM Part Number 15F8409 or an
equivalent type battery recommended by the manufacturer. If your system has
a module containing a lithium battery, replace it only with the same module
type made by the same manufacturer. The battery contains lithium and can
explode if not properly used, handled, or disposed of.
Do not:
vThrow or immerse into water
vHeat to more than 100°C (212°F)
vRepair or disassemble
Dispose of the battery as required by local ordinances or regulations.
Statement 3:
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
vDo not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
vUse of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
viii IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

Statement 4:
≥18 kg (39.7 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)
CAUTION:
Use safe practices when lifting.
Statement 5:
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the power
source.
1
2
Safety ix

Statement 8:
CAUTION:
Never remove the cover on a power supply or any part that has the following
label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts inside
these components. If you suspect a problem with one of these parts, contact
a service technician.
Statement 26:
CAUTION:
Do not place any object on top of rack-mounted devices.
Statement 27:
CAUTION:
Hazardous moving parts are nearby.
xIBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

Chapter 1. The System x3850 M2 and System x3950 M2 server
The IBM®System x3850 M2 and System x3950 M2 Types 7141 and 7233 servers
are 4-U1-high, high-performance servers. They are ideally suited for networking
environments that require superior microprocessor performance, efficient asset
management, flexibility, and large amounts of reliable data storage.
When they are available, you can purchase one or more SMP expansion kits to
interconnect System x3850 M2 and System x3950 M2 servers to create multi-node
configurations of two, three, or four nodes, for up to a 16-socket operation.
Performance, ease of use, reliability, and expansion capabilities were key
considerations in the design of the server. These design features make it possible
for you to customize the system hardware to meet your needs today and provide
flexible expansion capabilities for the future.
The server comes with a limited warranty. For information about the terms of the
warranty and getting service and assistance, see the Warranty Information
document.
The server contains IBM Enterprise X-Architecture®technologies, which help
increase performance and reliability. For more information, see “What your server
offers” on page 6 and “Reliability, availability, and serviceability” on page 8.
You can obtain up-to-date information about the server and other IBM server
products at http://www.ibm.com/systems/x/.
Related documentation
This User’s Guide contains general information about the server, including how to
install supported optional devices and how to configure the server. The following
documentation also comes with the server:
vInstallation Guide
This printed document contains instructions for setting up the server and basic
instructions for installing some optional devices.
vWarranty Information
This printed document contains information about the terms of the warranty.
vSafety Information
This document is in PDF on the IBM Documentation CD. It contains translated
caution and danger statements. Each caution and danger statement that appears
in the documentation has a number that you can use to locate the corresponding
statement in your language in the Safety Information document.
vRack Installation Instructions
This printed document contains instructions for installing the server in a rack.
vProblem Determination and Service Guide
This document is in PDF on the IBM Documentation CD. It contains information
to help you solve problems yourself, and it contains information for service
technicians.
1. Racks are measured in vertical increments of 4.45 cm (1.75 inches) each. Each increment is called a ″U.″A 1-U-high device is
1.75 inches tall.
© Copyright IBM Corp. 2009 1

vEnvironmental Notices and User Guide
This document is in PDF on the IBM Documentation CD. It contains translated
environmental notices.
vIBM License Agreement for Machine Code
This document is in PDF on the IBM Documentation CD. It provides translated
versions of the IBM License Agreement for Machine code for your product.
vIBM MCP Linux License Information and Attributions
This document is in PDF on the IBM Document CD. It provides information about
the open-source notices.
Depending on the server model, additional documentation might be included on the
IBM Documentation CD.
The System x and xSeries Tools Center is an online information center that
contains information about tools for updating, managing, and deploying firmware,
device drivers, and operating systems. The System x and xSeries Tools Center is at
http://publib.boulder.ibm.com/infocenter/toolsctr/v1r0/index.jsp.
The server might have features that are not described in the documentation that
comes with the server. The documentation might be updated occasionally to include
information about those features, or technical updates might be available to provide
additional information that is not included in the server documentation. These
updates are available from the IBM Web site. To check for updated documentation
and technical updates, complete the following steps.
Note: Changes are made periodically to the IBM Web site. The actual procedure
might vary slightly from what is described in this document.
1. Go to http://www.ibm.com/systems/support/.
2. Under Product support, click System x.
3. Under Popular links, click Publications lookup.
4. From the Product family menu, select System x3850 M2 or System x3950 M2
and click Continue.
Notices and statements in this document
The caution and danger statements in this document are also in the multilingual
Safety Information document, which is on the IBM Documentation CD. Each
statement is numbered for reference to the corresponding statement in your
language in the Safety Information document.
The following notices and statements are used in this document:
vNote: 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 might occur.
vCaution: These statements indicate situations that can be potentially hazardous
to you. A caution statement is placed just before the description of a potentially
hazardous procedure step or situation.
2IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

vDanger: These statements indicate situations that can be potentially lethal or
extremely hazardous to you. A danger statement is placed just before the
description of a potentially lethal or extremely hazardous procedure step or
situation.
Chapter 1. The System x3850 M2 and System x3950 M2 server 3

Features and specifications
The following information is a summary of the features and specifications of the
server. Depending on the server model, some features might not be available, or
some specifications might not apply.
Notes:
1. Racks are marked in vertical increments of 4.45 cm (1.75 inches). Each
increment is referred to as a unit, or “U.” A 1-U-high device is 4.45 cm (1.75
inches) tall.
2. Power consumption and heat output vary depending on the number and type of
optional features that are installed and the power-management optional features
that are in use.
3. These levels were measured in controlled acoustical environments according to
the procedures specified by the American National Standards Institute (ANSI)
S12.10 and ISO 7779 and are reported in accordance with ISO 9296. Actual
sound-pressure levels in a given location might exceed the average values
stated because of room reflections and other nearby noise sources. The
declared sound-power levels indicate an upper limit, below which a large
number of computers will operate.
4IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

Table 1. Features and specifications
Microprocessor:
vIntel®Xeon®multi-core microprocessor
with 8 MB Level-2 cache
v1066 MHz front-side bus (FSB)
vSingle node minimum: One
microprocessor per core
vMulti-node minimum: One
microprocessor per core in each node
vSupport for up to four microprocessors
Note: Use the Configuration/Setup Utility
program to determine the type and speed
of the microprocessors.
Memory:
vSingle-node minimum: 2 GB depending
on server model, expandable to 256 GB
vMulti-node minimum: 4 GB in node 1
and 2 GB in all other modes expandable
to a total of 1 TB
vType: Registered, ECC, PC2-5300
double data rate (DDR) II, SDRAM
vSizes: 1 GB, 2 GB, 4 GB or 8 GB (when
available) in pairs
vConnectors: Two-way interleaved, eight
dual inline memory module (DIMM)
connectors per memory card
vMaximum: Four memory cards, each
card containing four pairs of PC2-5300
DDR II DIMMs
Drives:
vSlim DVD-ROM: IDE and SATA (optional
in some models)
vSerial Attached SCSI (SAS) hard disk
drives
Expansion bays:
vFour SAS, 2.5-inch bays
vOne 12.7 mm removable-media drive
bay (DVD drive installed, standard on
some models only)
Expansion slots:
Seven PCI Express x8 (half-length) slots:
vFive non-hot-swap
vTwo hot-swap
Upgradeable microcode:
System BIOS, FPGA, diagnostics, service
processor, BMC, and SAS microcode
Power supply:
vStandard: One or two dual-rated power
supplies, depending on the model
– 1440 watts at 220 V ac input
– 720 watts at 110 V ac input
vHot-swappable and redundant at 220 V
ac, only with two power supplies
vIf the server is operating at 110 V ac, a
second power supply must be installed
to maintain a fully functional server.
Size:
v4U
vHeight: 128.35 mm (5.05 in.)
vDepth: 715 mm (28.15 in.)
vWidth: 440 mm (17.32 in.)
vWeight: approximately 43.1 kg (95 lb)
when fully configured or 31.75 kg (70
lb) minimum
Integrated functions:
vBaseboard management controller
vIBM EXA-4 chip set with integrated
memory and I/O controller
vRemote Supervisor Adapter II
vLight path diagnostics
vSix Universal Serial Bus (USB) ports
(2.0)
– Three on rear of server
– Two on front of server
– One internal
vBroadcom 5709 dual 10/100/1000
Gigabit Ethernet controller
vATI RN50 video
– 16 MB video memory
– SVGA compatible
vSerial-attached SCSI (SAS) controller
with RAID capabilities
vSupport for ServeRAID-MR10k SAS
controller
vSerial connector
vSMP Expansion Ports
Acoustical noise emissions:
vSound power, idle: 6.6 bel declared
vSound power, operating: 6.6 bel
declared
Environment:
vAir temperature:
– Server on:
- 10° to 35°C (50° to 95°F); altitude:
0 to 914 m (3000 ft). If the server
has a dual-core microprocessor, at
maximum power reduce the 35°C
by 1°C per 300 m above sea level,
or the microprocessor might throttle
to remain within the internal thermal
specifications.
- 10° to 32°C (50° to 90°F); altitude:
914 m to 2133 m (7000 ft).
– Server off: 10° to 43°C (50.0° to
109.4°F); maximum altitude: 2133 m
(6998.0 ft)
vHumidity:
– Server on: 8% to 80%
– Server off: 8% to 80%
vParticulate contamination:
Attention: Airborne particulates and
reactive gases acting alone or in
combination with other environmental
factors such as humidity or temperature
might pose a risk to the server. For
information about the limits for
particulates and gases, see “Particulate
contamination” on page 81.
Heat output:
Approximate heat output:
vMinimum configuration: 1297 Btu (380
watts) per hour
vTypical configuration: 2730 Btu (800
watts) per hour
vMaximum configuration:
– 5527 Btu per hour (1620 watts) at 110
Vac
– 5425 Btu per hour (1590 watts) at 220
Vac
Electrical input:
vSine-wave input (50 - 60 Hz) required
vInput voltage low range:
– Minimum: 100 V ac
– Maximum: 127 V ac
vInput voltage high range:
– Minimum: 200 V ac
– Maximum: 240 V ac
vApproximate input kilovolt-amperes (kVA):
– Minimum: 0.39 kVA
– Typical: 0.8 kVA
– Maximum: 1.65 kVA
Chapter 1. The System x3850 M2 and System x3950 M2 server 5

What your server offers
The server uses the following features and technologies:
vBaseboard management controller
The baseboard management controller (BMC) provides basic service-processor
environmental monitoring functions. If an environmental condition exceeds a
threshold or if a system component fails, the baseboard management controller
lights LEDs to help you diagnose the problem and records the error in the error
log. The baseboard management controller also provides remote server
management capabilities through the OSA SMBridge management utility
program.
Note: In messages and documentation, the term service processor refers to the
baseboard management controller or the Remote Supervisor Adapter II.
vIBM Director
IBM Director is a workgroup-hardware-management tool that you can use to
centrally manage IBM System x and xSeries®servers. For more information, see
the IBM Director documentation on the IBM Director CD.
vIBM Electronic Service Agent
IBM Electronic Service Agent is a software tool that monitors the server for
hardware error events and automatically submits electronic service requests to
the IBM Support Center. Also, it can collect and transmit system configuration
information on a scheduled basis so that the information is available to you and
your support representative. It uses minimal system resources, is available free
of charge, and can be downloaded from the Web. For more information and to
download Electronic Service Agent, go to http://www.ibm.com/support/electronic/.
vIBM Enterprise X-Architecture technology
IBM X-Architecture technology combines proven, innovative IBM designs to make
your x86-processor-based server powerful, scalable, and reliable. For more
information, see http://www.ibm.com/servers/eserver/xseries/xarchitecture/
enterprise/index.html.
–Active™Memory
The Active Memory feature improves the reliability of memory through
online-spare memory, memory mirroring, and memory scrubbing. Online-spare
memory disables a failed pair of DIMMs from the server configuration and
activates a pair of online-spare DIMMs. Memory scrubbing is an automatic
daily test of all the system memory that detects and reports memory errors
that might develop, before they cause a server outage.
–Large system-memory capacity
The server supports up to 256 GB of system memory. The memory controller
supports error correcting code (ECC) for up to 32 industry-standard
PC2-5300, 1.8 V, 240-pin, registered, double-data-rate (DDR) II, synchronous
dynamic random access memory (SDRAM) dual inline memory modules
(DIMMs).
–Memory ProteXion
The Memory ProteXion feature provides the equivalent of a hot-spare drive in
a RAID array. It is based in the memory controller, and it enables the server to
sense when a chip on a DIMM has failed and to route the data around the
failed chip.
vIBM ServerGuide Setup and Installation CD
The ServerGuide Setup and Installation CD that comes with the server provides
programs to help you set up the server and install a Windows operating system.
6IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide

The ServerGuide program detects installed optional hardware devices and
provides the correct configuration programs and device drivers. For more
information about the ServerGuide Setup and Installation CD, see “Using the
ServerGuide Setup and Installation CD” on page 68.
vIntegrated network support
The server comes with an integrated Broadcom 5709 dual Gigabit Ethernet
controller, which supports connection to a 10 Mbps, 100 Mbps, or 1000 Mbps
network. For more information, see “Configuring the Gigabit Ethernet controller”
on page 70.
vIntegrated Trusted Platform Module (TPM)
This integrated security chip performs cryptographic functions and stores private
and public secure keys. It provides the hardware support for the Trusted
Computing Group (TCG) specification. You can download the software to support
the TCG specification, when the software is available. See http://www.ibm.com/
servers/eserver/xseries/scalable_family.html for details about the TPM
implementation.
vLarge data-storage capacity and hot-swap capability
The server supports up to four 1-inch (26 mm) slim-high, 2.5-inch hot-swap hard
disk drives that are connected to the SAS backplane. With the hot-swap feature,
you can add, remove, or replace hard disk drives without turning off the server.
vLight path diagnostics
Light path diagnostics provides LEDs to help you diagnose problems. For more
information, see the section about light path diagnostics in the Problem
Determination and Service Guide.
vPCI Express x8 adapter capabilities
The server has seven slots for PCI Express x8 adapters. These slots also accept
x4 adapters.
vActive Energy Manager
The IBM Active Energy Manager solution is an IBM Director extension that
measures and reports server power consumption as it occurs. This enables you
to monitor power consumption in correlation to specific software application
programs and hardware configurations. You can obtain the measurement values
through the systems-management interface and view them, using IBM Director.
For more information, including the required levels of IBM Director and Active
Energy Manager, see the IBM Director documentation on the IBM Director CD, or
go to http://www.ibm.com/servers/eserver/xseries/systems_management/
ibm_director /extensions/.
vDynamic System Analysis (DSA) Preboot diagnostic programs
The DSA Preboot diagnostic programs are stored in integrated USB memory and
collect and analyze system information to aid in diagnosing server problems. The
diagnostic programs collect the following information about the server:
– System configuration
– Network interfaces and settings
– Installed hardware
– Light path diagnostics status
– Service processor status and configuration
– Vital product data, firmware, and BIOS configuration
– Hard disk drive health
– RAID controller configuration
– Event logs for ServeRAID controllers and service processors
The diagnostic programs create a merged log that includes events from all
collected logs. The information is collected into a file that you can send to the
Chapter 1. The System x3850 M2 and System x3950 M2 server 7

IBM Support Center. Additionally, you can view the server information locally
through a generated text report file. You can also copy the log to removable
media and view the log from a Web browser.
vRedundant connection
The addition of an optional network interface card (NIC) provides a failover
capability to a redundant Ethernet connection. If a problem occurs with the
primary Ethernet connection, all Ethernet traffic that is associated with the
primary connection is automatically switched to the redundant NIC. If the
applicable device drivers are installed, this switching occurs without data loss and
without user intervention.
vRedundant cooling and power capabilities
The redundant cooling of the fans in the server enable continued operation if one
of the fans fails. The server supports up to two hot-swap power supplies, which
provide redundant power for many server configurations.
vServeRAID support
The server supports ServeRAID controllers to create redundant array of
independent disks (RAID) configurations.
vSymmetric multiprocessing (SMP)
The server supports up to four multi-core Intel Xeon microprocessors. One or
more multi-core microprocessors provides SMP capability.
vSystems-management capabilities
The server supports an IBM Remote Supervisor Adapter II. When this adapter is
used with the systems-management software that comes with the server, you can
manage the functions of the server locally and remotely. The Remote Supervisor
Adapter II also provides system monitoring, event recording, and dial-out alert
capability.
Reliability, availability, and serviceability
Three important server design features are reliability, availability, and serviceability
(RAS). The RAS features help to ensure the integrity of the data that is stored in
the server, the availability of the server when you need it, and the ease with which
you can diagnose and correct problems.
The server has the following RAS features:
vActive memory
vAutomatic BIOS recovery (ABR)
vAutomatic error retry and recovery
vAutomatic restart after a power failure
vAvailability of microcode and diagnostic levels
vBackup basic input/output system (BIOS) switching under the control of the
service processor
vBaseboard management controller (service processor)
vBuilt-in, menu-driven electrically erasable programmable ROM (EEPROM) based
setup, system configuration, and diagnostic programs
vBuilt-in monitoring for fan, power, temperature, voltage, and power-supply
redundancy
vError codes and messages
vError correcting code (ECC) L2 cache and system memory
vFault-resistant startup
vHot-swap hard disk drives
vIBM Director workgroup-hardware-management tool
vInformation and light path diagnostics LED panels
8IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: User’s Guide