IBM 8685 xSeries 255 Installation Manual

Install options:

• Drives

• Microprocessors

• Adapters

• Memory

xSeries 255

Type 8685

Installation Guide

Welcome. . .

Thank you for buying an IBM xSeries server. is based on the X-Architecture technology, and it features superior performance, availability, and scalability.

This server

Installation Guide

contains information for setting up and configuring your server.

Your server

Install the server in

the rack, if required

Cable the server

and options

Start the server

Did the server start correctly?

Yes

Use ServerGuide™

to set up and

configure hardware

Go to the Server Support

flow chart

For detailed information about your server, view the publications on the

Documentation CD.

You can also find the most current information about your server on the IBM Web site at: http://www.ibm.com/pc/support

Did configuration

complete?

Yes

Use

ServerGuide to

install operating

system?

Yes

Install applications, such as IBM systems management software and IBM ServeRAID programs

System is ready to use.

Go to the Server Support

flow chart to register

and profile your server.

Go to the Web for instructions,

http://www.ibm.com/pc/support

Server Support

Server working

properly?

Yes

Check all cables for loose connections and verify that all optional devices you installed are on the ServerProven list. You can view the ServerProven list at

http://www.ibm.com/pc/compat/

Problem

solved?

Yes

http://www.ibm.com/pc/register/

View information about IBM support line at

http://www.ibm.com/services/sl/products/

or view support telephone numbers at

http://www.ibm.com/planetwide/

Use the troubleshooting information provided with your server to determine the cause of the problem and the action to take.

Problem

solved?

Yes

Flash the latest levels of BIOS, service processor, diagnostics, and RAID code. You can download this code at

http://www.ibm.com/pc/support/

Yes

Problem

solved?

View support telephone numbers at

http://www.ibm.com/planetwide/

Hardware

No Software

Hardware or

software problem?

IBM xSeries 255 Type 8685

Installation Guide



SC88-P920-40

Note:

Before using this information and the product it supports, read the general information in Appendix B, “Warranty information”, on page 43 and Appendix C, “Notices”, on page 61.

US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

Contents

Safety ............................v

Handling static-sensitive devices ...................x

Chapter 1. Introduction......................1

Specifications and features .....................2

Notices and statements used in this book ...............2

Major components view of the xSeries 255 Type 8685 server ........3

Chapter 2. Installing options....................5

Working inside a server with the power on ...............5

Installing adapters ........................5

Cabling a RAID or SCSI adapter to the standard SCSI backplane .....8

Installing memory modules ....................12

Installing a drive in a hot-swap bay .................15

Installing an additional microprocessor ................17

Installing a hot-swap power supply .................20

Cabling the server........................23

Chapter 3. Server controls, indicators, and power...........25

Server controls and indicators ...................25

Front view .........................25

Rear view ..........................27

Server power features ......................28

Turning on the server .....................28

Turning off the server .....................29

Standby mode ........................30

Chapter 4. Configuring your server ................31

Starting the utility programs ....................32

Using the Configuration/Setup Utility program ............32

Using the SCSISelect Utility program................32

Using the ServerGuide CD ....................33

Chapter 5. Solving problems ...................35

POST beep code descriptions ...................35

POST error messages ......................36

ServerGuide problems ......................37

Troubleshooting chart ......................38

Appendix A. Getting help and technical assistance ..........41

Before you call .........................41

Using the documentation .....................41

Getting help and information from the World Wide Web ..........41

Software service and support ...................42

Hardware service and support ...................42

Appendix B. Warranty information .................43

Part 1 - General Terms ......................43

Part 2 - Country-unique Terms ...................46

Part3-Warranty Information ...................57

Appendix C. Notices ......................61

Edition notice .........................61

Trademarks ..........................62

Important notes.........................62

Electronic emission notices ....................63

Federal Communications Commission (FCC) statement .........63

Industry Canada Class A emission compliance statement ........63

Australia and New Zealand Class A statement ............64

United Kingdom telecommunications safety requirement.........64

European Union EMC Directive conformance statement .........64

Taiwanese Class A warning statement ...............64

Japanese Voluntary Control Council for Interference (VCCI) statement . . . 65

Power cords ..........................65

Index ............................67

iv IBM xSeries 255 Type 8685: Installation 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.

Antes de instalar este producto, lea la información de seguridad. Läs säkerhetsinformationen innan du installerar den här produkten.

Statement 1:

DANGER

Electrical current from power, telephone, and communication cables is hazardous.

To avoid a shock hazard: v Do not connect or disconnect any cables or perform installation,

maintenance, or reconfiguration of this product during an electrical storm.

v Connect all power cords to a properly wired and grounded electrical

outlet.

v Connect to properly wired outlets any equipment that will be attached to

this product.

v When possible, use one hand only to connect or disconnect signal

cables.

v Never turn on any equipment when there is evidence of fire, water, or

structural damage.

v Disconnect the attached power cords, telecommunications systems,

networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

v Connect 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.

vi IBM xSeries 255 Type 8685: Installation Guide

Statement 2:

CAUTION: When replacing the lithium battery, use only IBM Part Number 33F8354 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:

v Throw or immerse into water v Heat to more than 100°C (212°F) v Repair 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:

v Do 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. v Use 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.

Safety vii

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.

2 1

Statement 6:

CAUTION: If you install a strain-relief bracket option over the end of the power cord that is connected to the device, you must connect the other end of the power cord to an easily accessible power source.

viii IBM xSeries 255 Type 8685: Installation Guide

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 13:

DANGER

Overloading a branch circuit is potentially a fire hazard and a shock hazard under certain conditions. To avoid these hazards, ensure that your system electrical requirements do not exceed branch circuit protection requirements. Refer to the information that is provided with your device for electrical specifications.

Statement 14:

CAUTION: Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is authorized to remove the covers where the following label is attached.

Safety ix

Handling static-sensitive devices

Attention: Static electricity can damage electronic devices and your system. To

avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them.

To reduce the possibility of electrostatic discharge, observe the following precautions:

v Limit your movement. Movement can cause static electricity to build up around

you.

v Handle the device carefully, holding it by its edges or its frame. v Do not touch solder joints, pins, or exposed printed circuitry. v Do not leave the device where others can handle and possibly damage the

device.

v While the device is still in its static-protective package, touch it to an unpainted

metal part of the system unit for at least 2 seconds. (This drains static electricity from the package and from your body.)

v Remove the device from its package and install it directly into your server without

setting it down. If it is necessary to set the device down, place it in its static-protective package. Do not place the device on your server cover or on a metal table.

v Take additional care when handling devices during cold weather because heating

reduces indoor humidity and increases static electricity.

x IBM xSeries 255 Type 8685: Installation Guide

Chapter 1. Introduction

Thank you for purchasing an IBM®Eserver xSeries™255 Type 8685 with IBM X-Architecture

™

features. This Installation Guide provides the information needed

to:

v Set up and cable your server v Start and configure your server v Install your network operating system (NOS)

Packaged with this Installation Guide are software CDs that help you configure hardware, install device drivers, and install the NOS.

Also included is an xSeries Documentation CD that provides detailed information about this server.

If you have access to the World Wide Web, you can obtain up-to-date information about your server model and other IBM server products at http://www.ibm.com/eserver/xseries/ on the World Wide Web.

See the Rack Installation Instructions for complete rack installation and removal instructions.

Record your product information in this table.

Product name _________________________________________ Machine type _________________________________________ Model number _________________________________________ Serial number _________________________________________

Specifications and features

The following table provides a summary of the features and specifications for your

server.

Table 1. Features and specifications

Microprocessor:

v Intel Xeon v 1 MB or 512 KB level-3 cache

depending upon model

v 400 MHz front-side bus (FSB) v Support for up to four

microprocessors with Intel Hyper-Threading technology and Intel NetBurst

Memory:

v Maximum: 12 GB v Type: ECC, double-data rate (DDR),

SDRAM, registered DIMMs

v Slots: two-way or four-way

interleaved, 12 slots

v Hot Spare memory

Drives standard:

v Diskette: 1.44 MB v CD-ROM: IDE

Available expansion bays:

v Hot-swap:

– Six slim-high in upper drive cage – Six slim-high in lower drive cage

v Non-hot-swap: Two 5.25-inch

Expansion slots:

v Six hot-plug PCI-X 100 MHz/64-bit v One non-hot-plug PCI 33 MHz/32-bit

Hot-swap power supplies:

370 W (115-230 V ac)

v Minimum: Two v Maximum: Four for redundancy

Redundant cooling:

Nine hot-swap fans

™

microarchitecture

with optional SCSI backplane installed

Video:

v ATI RageXL video controller v Compatible with SVGA and VGA v 8 MB video memory

Size (tower model):

v Height: 356 mm (14.0 in.) v Depth: 700 mm (27.6 in.) v Width: 483 mm (19 in.) v Weight:47kg(104lb)to55kg(121.2

lb) depending upon configuration

Size (7 U) (rack model):

v Height: 311 mm (12.3 in.) v Depth: 650 mm (25.6 in.) v Width: 440 mm (17.3 in.) v Weight:47kg(104lb)to55kg(121.2

lb) depending upon configuration

Integrated functions:

v Dual-channel Ultra160 SCSI controller

(one internal and one external channel)

v Wake on LAN v One Broadcom 10/100/1000 Mbps

Ethernet controller

v One serial port v Four Universal Serial Bus ports v Keyboard port v Mouse port v Video port v Integrated system management

processor (ISMP) with two ISMP (RS-485) RJ-45 connectors

Acoustical noise emissions:

v Sound power, idle: 6.3 bel maximum v Sound power, operating: 6.3 bel

maximum

v Bystander (1 m) Sound pressure,

operating: 47 dBa maximum

v Bystander (1 m) Sound pressure, idle:

47 dBa maximum

support

Environment:

v Air temperature:

– Server on: 10° to 35°C (50° to 95°F).

Altitude: 0 to 914 m (3000 ft).

– Server on: 10° to 32°C (50° to 89.6°F).

Altitude: 914 m (3000 ft) to 2133 m (7000 ft).

– Server off: 10° to 43°C (50° to 110°F).

Maximum altitude: 2133 m (7000 ft).

v Humidity:

– Server on: 8% to 80% – Serveroff:8%to80%

Heat output:

Approximate heat output in British thermal units (Btu) per hour v Minimum configuration: 461 Btu (0.14

kilowatts)

v Maximum configuration: 3412 Btu (1.0

kilowatts)

Electrical input:

v Sine-wave input (50-60 Hz) required v Input voltage low range:

– Minimum: 100 V ac – Maximum: 127 V ac

v Input voltage high range:

– Minimum: 200 V ac – Maximum: 240 V ac

v Input kilovolt-amperes (kVA) approximately:

– Minimum: 0.08 kVA – Maximum: 1.07 kVA

Notices and statements used in this book

The caution and danger statements used in this book also appear in the multilingual Safety Information book provided on the IBM xSeries Documentation CD. Each caution and danger statement is numbered for easy reference to the corresponding statements in the safety book.

The following types of notices and statements are used in this book: v Note: These notices provide important tips, guidance, or advice.

1. Racks are marked in vertical increments of 1.75 inches each. Each increment is referred to as a unit, or ″U.″ A 1-U-high device is

1.75 inches tall.

2 IBM xSeries 255 Type 8685: Installation Guide

v Important: These notices provide information or advice that might help you avoid

inconvenient or problem situations. v Attention: These notices indicate possible damage to programs, devices, or

data. An attention notice is placed just before the instruction or situation in which

damage could occur. v Caution: 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. v Danger: 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.

Major components view of the xSeries 255 Type 8685 server

The orange color on components and labels in your server identifies hot-swap or hot-plug components. You can install or remove these components while the system is running, provided that your system is configured to support this function.

The blue color on components and labels indicates touch points where a component can be gripped, a latch moved, and so on.

The following illustration shows the major components of your server.

Chapter 1. Introduction 3

Note: The illustrations in this document might differ slightly from your hardware.

Air baffle

System handles

Fans

Memory module

Fans

Dividers

Adapter support bracket

Memory board

Microprocessor VRM with plastic handle

Microprocessor VRM with metal retaining-clip housing

Heat sink

Microprocessor

System board

SCSI backplane support bracket

Light Path Diagnostics panel

Power-supply fans

Microprocessor

baffle

Power supplies

Shuttle assembly

Microprocessor airflow guide

4 IBM xSeries 255 Type 8685: Installation Guide

Chapter 2. Installing options

This chapter provides the basic information needed to install options in your server. This section is for all users but is written with the experienced user in mind. If you need more detailed installation information, see the Option Installation Guide on the xSeries Documentation CD.

Working inside a server with the power on

Your server supports hot-plug, hot-add, and hot-swap devices and is designed to operate safely while turned on with the cover removed. Follow these guidelines when you work inside a server that is turned on:

v Avoid loose-fitting clothing on your forearms. Button long-sleeved shirts before

working inside the server; do not wear cuff links while you are working inside the

server.

v Do not allow your necktie or scarf to hang inside the server. v Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist

watches. v Remove items from your shirt pocket (such as pens or pencils) that could fall into

the server as you lean over it. v Avoid dropping any metallic objects, such as paper clips, hair pins, or screws,

into the server.

Installing adapters

This section describes how to install hot-plug and non-hot-plug peripheral component interconnect (PCI) and PCI-X adapters. Before you install adapters, review the following:

v Slot 1 supports a non-hot-plug, 32-bit, 33 MHz, optional PCI adapter, such as the

IBM Remote Supervisor Adapter. If you install the optional Remote Supervisor

Adapter in this server, you must install the adapter in PCI slot 1. However, you

can install other compatible adapters in this slot.

If you install the optional IBM Remote Supervisor Adapter in the server, use the

ribbon cable that comes with the adapter to connect the adapter to the

system-management connector (J16) on the system board. The external power

adapter that comes with the IBM Remote Supervisor Adapter is not required with

this server. v Slots 2 through 7 support hot-plug, 64-bit, 100 MHz, PCI or PCI-X, 3.3 V

adapters. v If you install an adapter with a speed of less than 100 MHz, the speed of that

PCI bus will be reduced to the speed of the slowest device on that bus.

To maintain an optimum speed for the Ethernet controller on PCI bus B (PCI-X

slots 2 and 3), install the following types of adapters in PCI-X slots 4 through 7:

– Redundant array of independent disks (RAID) adapters

– 33 MHz or 66 MHz speed adapters

– PCI adapters v Locate the documentation that comes with the adapter and follow those

instructions in addition to the instructions in this chapter. If you need to change

the switch or jumper settings on your adapter, follow the instructions that come

with the adapter.

This section contains the procedure for installing a hot-plug or non-hot-plug PCI or PCI-X adapter. If your operating system supports hot-plug PCI or PCI-X adapters, you can replace a failing hot-plug PCI or PCI-X adapter with a new hot-plug PCI or PCI-X adapter of the same type without turning off power to the server. If your operating system and adapter also support the hot-add feature in slots 4 through 7, you can install a new adapter without turning off the power to the server.

Note: You do not have to turn off the server to install hot-plug adapters in the

hot-plug slots. However, you must turn off the server when performing any steps that involve installing or removing cables.

Important: Do not remove a hot-plug PCI or PCI-X adapter before performing the operating-system-defined procedure for disabling the Active

™

PCI-X (hot-plug) slot that contains the adapter. Failure to do so might cause your system to lock up. See your operating-system documentation.

For more detailed instructions, information, and additional system-board illustrations, see the Option Installation Guide on the xSeries Documentation CD.

The following illustration shows the location of the adapter slots for the xSeries 255 Type 8685 server.

Note: A cable is attached to the hot-plug PCI-X switch card at system-board

connector J20 so that the hot-plug function will work properly for PCI-X slots 2 through 7. Do not disconnect this cable.

PCI Slot 1 32-bit 33 MHz (J26)

PCI-X Slot 2 64-bit 100 MHz (J27)

PCI-X Slot 3 64-bit 100 MHz (J28)

PCI-X Slot 4 64-bit 100 MHz (J29)

PCI-X Slot 5 64-bit 100 MHz (J30)

PCI-X Slot 6 64-bit 100 MHz (J31)

PCI-X Slot 7 64-bit 100 MHz (J32)

Hot-plug PCI-X switch card (J20)

6 IBM xSeries 255 Type 8685: Installation Guide

The following illustration shows how to install an adapter.

Adapterretention latch

Attention LED

Adapter locking lever

Unlock

N M

P I A

I 2

P E C

N O

D .

E M

N D

1 2

Lock

Adapter

Power LED

Adapterretention tab

Complete the following steps to install an adapter.

1. Review the information beginning with “Safety” on page v through “Handling static-sensitive devices” on page x.

2. If you are installing a non-hot-plug adapter, turn off the server and disconnect all power cords and external cables.

3. Remove the top cover.

4. Select the slot in which you want to install the adapter. Note: PCI-X slots 2 through 7 support hot-plug PCI and PCI-X adapters. If

5. If you are installing a hot-plug adapter or using the hot-add feature, disable the selected PCI-X slot from your operating system. (See the documentation that comes with your operating system for information about disabling a hot-plug PCI-X slot.) Disabling the PCI-X slot turns off the power-on LED for that PCI-X slot.

Attention: Make sure that the power-on LED for the hot-plug PCI slot is off before you continue with the next step.

you are using the hot-add feature, be sure to install the adapters in PCI-X slots 4 through 7 to maintain an optimum speed for the Ethernet controller on PCI bus B (PCI-X slots 2 and 3).

Chapter 2. Installing options 7

6. Press the adapter-retention latch as indicated by the arrow to move the latch to the unlocked (open) position.

7. Lift the adapter-retention tab on the top of the expansion-slot cover; then, remove the expansion-slot cover.

8. If you are installing a full-length adapter, move the adapter locking lever to the unlocked (open) position on the adapter-support bracket as indicated by the arrow. Otherwise, continue with the next step.

9. If you need to set any jumpers or switches on the adapter, do so now.

10. Install the adapter in the slot; then, lower the adapter-retention tab over the top corner of the adapter. When the adapter-retention tab is completely closed, the adapter-retention latch snaps (locks) into place.

11. If you installed a full-length adapter, move the adapter locking lever to the

locked position on the adapter-support bracket.

12. Connect any needed cables to the adapter.

13. If you installed a hot-plug adapter or used the hot-add feature, enable the PCI-X slot from your operating system. (See the documentation that comes with your operating system for information about enabling a hot-plug PCI-X slot.) Make sure that the power-on LED for the hot-plug PCI-X slot comes on. If the power-on LED does not come on, see the Hardware Maintenance Manual and Troubleshooting Guide for additional information.

14. If you have other options to install or remove, do so now; otherwise, reinstall the top cover. If you installed a non-hot-plug adapter, connect all cables and power cords.

Cabling a RAID or SCSI adapter to the standard SCSI backplane

Complete the following steps to cable a single small computer system interface (SCSI) channel on a RAID or SCSI adapter using the standard hot-swap drive SCSI backplane.

Note: Some server configurations require using two channels. For more detailed

instructions and information, see the Option Installation Guide on the xSeries Documentation CD.

1. Review the information beginning with “Safety” on page v through “Handling static-sensitive devices” on page x.

2. Turn off the server and peripheral devices and disconnect all power cords and external cables.

3. If your server is a tower model, continue with the next step. If your server is a rack model and you have already installed the server in a

rack enclosure, you must disconnect the cable-management arm bracket from the server. See the Rack Installation Instructions on the xSeries Documentation CD for details.

4. Remove the top cover.

5. Remove the air baffle.

8 IBM xSeries 255 Type 8685: Installation Guide

Fasteners

N M

R E C

N O R E D

E M

IN D

Handle

Air baffle

O G

E M

1 1

J 1

6. Open the microprocessor airflow guide located between the front fans and the microprocessors.

Microprocessor

Locking tabs

airflow guide (open position)

Microprocessor airflow guide (closed position)

Chapter 2. Installing options 9

7. Unlock the metal-hinge latch that secures the shuttle assembly in place. Then, slide the shuttle assembly toward the rear of the server, approximately 10 cm (4 in.).

Shuttle latch

N M

P E C

N O R

3 E D .

R E

N D

J J

1 J 1

8. Disconnect the internal integrated drive electronics (IDE) signal cable from the IDE system-board connector. Disconnect the diskette-drive signal cable and front-fan signal cable from the corresponding system-board connectors. See the Option Installation Guide on the xSeries Documentation CD for cable locations.

9. If the server is a tower model, lift the shuttle assembly from the server.

10. If you have not yet installed a RAID or SCSI adapter, install it now. Otherwise, continue with the next step. See the preceding adapter-installation procedure in this chapter and your RAID or SCSI adapter option documentation for additional information about installing a RAID or SCSI adapter in your server and connecting the SCSI cables to a RAID or SCSI adapter.

11. Disconnect the SCSI signal cable from the internal SCSI connector (J15) on

the system board.

External SCSI A (J14)

Internal SCSI B (J15)

Adapter

10 IBM xSeries 255 Type 8685: Installation Guide

Attention: When you route the SCSI cable, observe the following precaution: Do not block the ventilated space in front of the fan assembly.

12. If your server is a tower model, reinstall the shuttle assembly in the server.

13. Slide the shuttle assembly back into place and secure it by locking the metal-hinge latch.

14. Route the SCSI cable from the standard SCSI backplane through the opening in the adapter-support bracket to the internal channel connector on the RAID or SCSI adapter.

SCSI cable

Adapter

connector

SCSI cable

M I

P I A

C S

I 2

3 E D

E M

1 J 1 2

SCSI cable connector

SCSI backplane

15. Reconnect the internal IDE signal cable to the IDE system-board connector. Reconnect the diskette-drive signal cable and front-fan signal cable to the corresponding system-board connectors. See the Option Installation Guide on the xSeries Documentation CD for cable locations.

16. Close the microprocessor airflow guide located between the front fans and the microprocessors. Insert the tabs into the corresponding slots.

17. Reinstall the air baffle and lock the blue fasteners.

18. If you have other options to install or remove, do so now; otherwise, reinstall the top cover.

19. If your server is a tower model, continue with the next step. If your server is a rack model and you have already installed the server in a

rack enclosure, you must reconnect the cable-management arm bracket to the server. See the Rack Installation Instructions on the xSeries Documentation CD for details.

20. Reconnect all cables and power cords.

Chapter 2. Installing options 11

Installing memory modules

Adding memory to your server is an easy way to make programs run faster. You can increase the amount of memory in your server by installing memory-module options. When you install memory, you must install a set of two or four matched dual inline memory modules (DIMMs).

Before you install memory, review the following: v The DIMM options available for your server are 256 MB, 512 MB, and 1 GB.

Your server supports a minimum of 512 MB and a maximum of 12 GB of system memory.

v The amount of usable memory will be reduced depending on the system

configuration. A certain amount of memory must be reserved below the amount of installed memory for system resources. The BIOS will display the amount of installed memory.

v Your server comes with a minimum of two 256 MB DIMMs (for a total of 512 MB

memory) installed in the DIMM 2 and DIMM 8 memory connectors (D2 and D8, respectively). You must have DIMMs installed in these connectors at all times.

v When you install additional DIMMs, be sure to install them in pairs or quads and

follow the DIMM installation sequence in the illustration in this section. A pair or quad is also known as a memory bank. See Table2 on page 13 for the DIMM connectors in each pair or quad.

v All the DIMMs in a single pair or quad must be the same size, speed, and type. v Multiple pairs or quads of DIMMs do not have to contain DIMMs of the same

size, speed, and type, unless the Hot Spare Memory feature is enabled.

v The memory board contains 12 DIMM connectors and supports two-way and

four-way memory interleaving. To use the four-way memory interleaving technology in your server, you must

install DIMMs in all four connectors in each populated set.

v Install only 2.5 V, 184-pin, 72-bit, 100 MHz, double-data-rate (DDR), PC1600,

registered synchronous dynamic random-access memory (SDRAM) dual inline memory modules (DIMMs) with error correcting code (ECC). Only 100 MHz, 72-bit, registered, synchronous memory is supported for the 256 MB, 512 MB, and 1 GB DIMMs. These DIMMs must be compatible with the latest PC1600 SDRAM Registered DIMM specification. For a list of supported options for your server, go to http://www.ibm.com/us/compat/ on the World Wide Web.

v Installing or removing DIMMs changes the configuration information in the server.

The Configuration/Setup Utility program automatically saves the new configuration information. When you restart the server, the system displays a message indicating that the memory configuration has changed. See the User’s Guide on the IBM xSeries Documentation CD for more information about the Configuration/Setup Utility program.

v Your server supports the Hot Spare Memory feature in the event of an active

memory pair or quad of DIMM failure. This feature, when enabled, disables the failed memory from the system configuration and activates a Hot Spare Memory pair or quad of DIMMs to replace the failed pair or quad of DIMMs. Before you can enable this feature, you must also install at least one additional pair or quad of DIMMs as described in this book. To ensure proper server operation and to avoid disabling the Hot Spare Memory feature, all additional pairs or quads of DIMMs must be the same size, speed, and type as the failed pair or quad of DIMMs.

You can enable the Hot Spare Memory feature through the Configuration/Setup Utility program. After you enable the Hot Spare Memory feature, the

12 IBM xSeries 255 Type 8685: Installation Guide

Configuration/Setup Utility program assigns the Hot Spare Memory bank according to your server configuration. If your server has a two-way interleaved configuration, the Hot Spare Memory bank becomes the DIMMs in connectors D2 and D8. If your server has a four-way interleaved configuration, the Hot Spare Memory bank becomes the DIMMs in connectors D1, D2, D7, and D8. See the User’s Guide on the IBM xSeries Documentation CD for further details about enabling the Hot Spare Memory feature.

When you install DIMMs, install them in the order listed in Table 2.

Table 2. DIMM installation order

Interleaving Number of DIMMs Install DIMMs in these connectors

Two-way 2 D2, D8 (standard) Two-way 4 D2, D8 (standard) (Hot Spare memory

bank for two-way interleaving) D4, D10

Two-way 6 D2, D8 (standard) (Hot Spare memory

bank for two-way interleaving) D4, D10

D6, D12 Four-way 4 D2, D8, D1, D7 Four-way 8 D2, D8, D1, D7 (Hot Spare memory bank

for four-way interleaving)

D4, D10, D3, D9 Four-way 12 D2, D8, D1, D7 (Hot Spare memory bank

for four-way interleaving)

D4, D10, D3, D9

D6, D12, D5, D11

Complete the following steps to install a DIMM.

1. Review the information beginning with “Safety” on page v through “Handling static-sensitive devices” on page x.

2. Turn off the server and disconnect all power cords and external cables.

3. Remove the top cover.

4. Remove the air baffle.

5. Remove the memory-board assembly from the server and open the airflow guide.

Chapter 2. Installing options 13

Release latch

Velcro tabs

Memory-board airflow guide (closed position)

N M

P I A

C S

IC 2

P E C

N O

D .

E M

J 1

Release latch

J 1

J 8

J 9

6. Select the connectors in which you want to install the DIMMs.

7. Install the DIMMs in the connectors.

DIMM 7 DIMM 8 DIMM 9 DIMM 10

Retaining clips

DIMM 11 DIMM 12

DIMM 1 DIMM 2 DIMM 3 DIMM 4 DIMM 5 DIMM 6

8. Reinstall the memory-board assembly in the server.

9. Reinstall the air baffle.

10. If you have other options to install or remove, do so now; otherwise, reinstall the top cover and connect all cables and power cords.

14 IBM xSeries 255 Type 8685: Installation Guide

+ 58 hidden pages

IBM 8685 xSeries 255 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual