Compaq ServerNet II Installation guide

Compaq ServerNet II PCI Adapter and

Switch Installation Guide

Installation Guide

First Edition (August 2000)

Part Number 191003-001

Compaq Computer Corporation

Notice

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Compaq ServerNet II PCI Adapter and Switch Installation Guide

Installation Guide

First Edition (August 2000)

Part Number 191003-001

Contents

About This Guide

Symbols in Text.........................................................................................................vii

Chapter 1

ServerNet II Introduction

Overview ..................................................................................................................1-1

ServerNet II Kits ......................................................................................................1-1

ServerNet II PCI Adapter Features...........................................................................1-2

ServerNet II PCI Adapter Physical Description ................................................1-3

ServerNet II Switch Features....................................................................................1-4

Switch Physical Description..............................................................................1-4

Interface Cable Features...........................................................................................1-6

ServerNet II CD-ROM .............................................................................................1-7

Software Applications and Drivers on the CD-ROM.......................................1-7

Documents on the CD-ROM.............................................................................1-9

Software Updates on the Compaq Website ............................................................1-10

Installation Requirements.......................................................................................1-11

ServerNet II SAN Topologies ................................................................................1-12

Chapter 2

Installing Drivers and Software

Overview ..................................................................................................................2-1

Prerequisites .............................................................................................................2-1

Creating a Switched, Dual-Fabric SAN Topology...................................................2-2

Installing the Drivers and Configuring the Primary Node (New Installations) 2-2

Installing ServerNet II Applications and Utilities ..........................................2-13

Creating the SAN Topology............................................................................2-20

Creating a Switchless SAN Topology...................................................................2-32

Performing Other ServerNet II Software Procedures.............................................2-42

Uninstalling, Modifying, and Installing Applications .....................................2-42

Running ServerNet II OnLine Diagnostics to Verify the Installation .............2-43

Upgrading Drivers...........................................................................................2-44

Installing Drivers Using Terminal Services Client..........................................2-45

Installing the Compaq Windows Sockets Direct SAN Service Provider .......2-46

iv Compaq ServerNet II PCI Adapter and Switch Installation Guide

Chapter 3

Using ServerNet II Diagnostics

Overview ..................................................................................................................3-1

Requirements for Use........................................................................................3-1

Location of Diagnostics Software .....................................................................3-1

Diagnostic Tests ................................................................................................3-2

Diagnostics Test Modes ....................................................................................3-2

Installing Diagnostics ...............................................................................................3-3

Using Diagnostic Tests.............................................................................................3-3

Invoking Diagnostics................................................................................................3-4

Batch Mode Diagnostics Examples...................................................................3-5

Problem Solving the Diagnostics Tests ....................................................................3-9

Chapter 4

Software Components and SAN Management

Overview ..................................................................................................................4-1

System Area Network Management (SANMan) Software.......................................4-1

ServerNet II Administrative Utility (SANUtil) .................................................4-1

Simple Network Management Protocol Agents .......................................................4-2

Compaq Insight Manager XE (CIM XE)..................................................................4-3

Requirements for Operation ..............................................................................4-3

Accessing ServerNet II in the CIM Utility........................................................4-4

Other CIM XE Windows...................................................................................4-9

Appendix A

Regulatory Compliance Notices

Federal Communications Commission Notice ........................................................A-1

Class A Equipment...........................................................................................A-1

Modifications ...................................................................................................A-2

Cables...............................................................................................................A-2

Canadian Notice (Avis Canadien) ...........................................................................A-2

Class A Equipment...........................................................................................A-2

European Union Notice ...........................................................................................A-2

Japanese Notice .......................................................................................................A-3

Taiwanese Notice ....................................................................................................A-3

Appendix B

Electrostatic Discharge

Grounding Methods................................................................................................. B-1

Appendix C

Power Cord Set Requirements

General Requirements ............................................................................................. C-1

Country-Specific Requirements .............................................................................. C-1

Appendix D

ServerNet II Specifications

ServerNet II Switch Specifications..........................................................................D-1

ServerNet II PCI Adapter Specifications.................................................................D-3

Cable Specifications ................................................................................................D-3

About This Guide v

Appendix E

ServerNet II Event Log Messages

Overview ................................................................................................................. E-1

Appendix F

ServerNet II Troubleshooting

Troubleshooting Overview.......................................................................................F-1

Troubleshooting Tools .............................................................................................F-2

Step-by-Step Troubleshooting..................................................................................F-3

Problem-Solution Troubleshooting ..........................................................................F-9

Diagnostics Decision Chart ....................................................................................F-10

Appendix G

ServerNet II Diagnostics Examples

Overview .................................................................................................................G-1

Failed Computer......................................................................................................G-3

Results from the Echo Test ..............................................................................G-4

Results from the Routing Test..........................................................................G-5

Results from the Topology Test .......................................................................G-7

Failed Switch.........................................................................................................G-11

Results From the Echo Test............................................................................G-12

Results From the Routing Test.......................................................................G-14

Results from the Topology Test .....................................................................G-17

Failed Link between Computer and Switch...........................................................G-22

Results from the Echo Test ............................................................................G-23

Results from the Routing Test........................................................................G-25

Results from the Topology Test .....................................................................G-28

Swapped links between Computer and Switch......................................................G-33

Results From the Echo Test............................................................................G-34

Results From the Routing Test.......................................................................G-36

Results from Topology Test ...........................................................................G-40

Appendix H

ServerNet II Diagnostics Resources

Overview .................................................................................................................H-1

How Diagnostics Works..........................................................................................H-1

Identifying Source Routes .......................................................................................H-2

Overview of ServerNet II Online Diagnostic Tests................................................H-3

Echo Test..........................................................................................................H-3

Topology Test ..................................................................................................H-6

Routing Test.....................................................................................................H-7

Diagnostics Files .....................................................................................................H-9

Diagnotics Tests: Interactive Mode................................................................H-10

Problem-Solving Diagnostics in Interactive Mode................................................H-13

Appendix I

ServerNet II SNMP Management

Overview .................................................................................................................. I-1

ServerNet II Switch SNMP Management Tools ..................................................... I-1

Monitoring the Switch for Trap Conditions ...................................................... I-4

Switch Management Information Base ............................................................. I-5

vi Compaq ServerNet II PCI Adapter and Switch Installation Guide

ServerNet II Adapter SNMP Management Tools..................................................... I-5

Adapter Agent Extension .................................................................................. I-6

Adapter Management Information Base............................................................ I-6

Appendix J

ServerNet II Switch SNMP Traps

Overview .................................................................................................................. J-1

snetSwitchLinkAliveChange............................................................................. J-3

snetSwitchNeighborValidationFailed................................................................ J-4

snetSwitchLinkLevelError ................................................................................ J-5

snetSwitchPacketLevelError ............................................................................. J-6

snetSwitchIBCError .......................................................................................... J-7

snetSwitchAccessViolation............................................................................... J-8

snetSwitchOwnerChange .................................................................................. J-9

snetSwitchFirmwareUpgrade ............................................................................ J-9

snetSwitchSANManFailover........................................................................... J-10

snetSwitchTopologyConfigUpdate ................................................................. J-11

snetSwitchFanFailure ...................................................................................... J-11

Setting Error Thresholds......................................................................................... J-12

Switch Agent Extension Caching ........................................................................... J-12

Appendix K

ServerNet II PCI Adapter SNMP Traps

Overview .................................................................................................................K-1

snetAdaptrStatusChange ..................................................................................K-2

snetAdaptrXPortStatusChange.........................................................................K-3

snetAdaptrYPortStatusChange.........................................................................K-4

Adapter Agent Extension Caching ...................................................................K-4

Appendix L

Technical Support

Compaq Customer Support ..................................................................................... L-1

Compaq Worldwide Web Server ..................................................................... L-1

Compaq FTP Server......................................................................................... L-1

Compaq Internet Site........................................................................................ L-1

PaqFax.............................................................................................................. L-2

Calling the Compaq Support Line.................................................................... L-2

Appendix M

SAN Configuration Worksheets

Overview ................................................................................................................ M-1

Appendix N

Compaq Windows Sockets Direct SAN Service Provider

Overview .................................................................................................................N-1

Supplied Components for SAN Adapters.........................................................N-1

TCP/IP Functions .............................................................................................N-1

Installing the Compaq Windows Sockets Direct SAN Service Provider.................N-2

Glossary

Terms and Acronyms

Index

About This Guide vii

About This Guide

This guide describes ServerNet II hardware and software, installation, troubleshooting

Symbols in Text

These symbols may be found in the text of this guide. They have the

following meanings.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning

could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in

damage to equipment or loss of information.

IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.

NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of information.

Chapter 1

ServerNet II Introduction

Overview

The Compaq ServerNetä II System Area Network (SAN) offers point-to-point, wormhole-

routed connections between Compaq ProLiantä servers in clustering environments where

multiple servers are linked together. Wormhole routing, unlike store and forward, allows the

head of the packet to leave the router before the tail arrives, providing lower latency.

ServerNet II improves latency and bandwidth and reduces CPU usage over the previous

ServerNet version. In addition, it lets you create redundant SANs when ServerNet II Adapters

are teamed with ServerNet II Switches. The SAN can contain from two to 12 nodes with one or

two Switches, or it can be configured without a Switch (a switchless SAN). Information about

these configurations is found later in this chapter.

ServerNet II Kits

ServerNet II component kits provide the following items needed to create a ServerNet II System

Area Network (SAN). Each kit is ordered separately:

■ ServerNet II PCI Adapter kit (174736-B21, International) — Contains the two-port

Adapter, which installs in a Compaq ProLiant server; the ServerNet II PCI Adapter

Hardware Installation and Configuration poster, with instructions for installing the

Adapter; the ServerNet II PCI Adapter Contents Card, which lists the parts packaged with

the Adapter; the ServerNet II CD, which contains the drivers and software to operate the

Adapter and the Switch, plus the ServerNet II PCI Adapter and Switch Installation Guide

in Adobe Acrobat format

■ ServerNet II Switch kit (174739-001; 174739-B31, International) — Contains the 12-port

Switch, which connects the nodes to a ServerNet II SAN; the ServerNet II Switch

Hardware Installation and Configuration poster, with instructions for installing the

Switch; the rack mount kit, to install the Switch in a rack; the ServerNet II Switch

Contents Card, which lists the parts packaged with the Switch

■ ServerNet II Interface Cable kit — Contains the cable to connect the Adapters to one port

on the Switch or to one port on another Adapter. Cables are available in two lengths: 5-

meter Copper Serial Cable Kit, (174737-B21, International); 10-meter Copper Serial

Cable Kit, (174738-B22)

1-2 Compaq ServerNet II PCI Adapter and Switch Installation Guide

ServerNet II PCI Adapter Features

The ServerNet II PCI Adapter (the “Adapter”) is a high-speed, low-latency, dual-ported

communication controller intended for SAN environments. It is installed in a Compaq ProLiant

server to create a ServerNet II node, which has two active ports for fault tolerance and

additional performance. When combined with a ServerNet II Switch, the Adapter can be

configured point-to-point or in very large SANs.

Adapter features include:

■ Dual-ports that connect to a standard v2.1 (33 MHz/32 bits) or v2.2 (66MHz/64 bits)

Peripheral Component Interconnect (PCI) bus on each server node

■ Bandwidth of 1.25 Gb/s for each connection (limited by the PCI bus version, noted above)

■ Support for Compaq PCI Hot Plug

■ Virtual Interface (VI) architecture that reduces latency and CPU use and improves

reliability for SAN environments

■ Ability to monitor SAN operations through standard SNMP agents or through the Compaq

Insight Manager™ (CIM)

■ Fault-tolerant SAN operation when configured with the appropriate ServerNet II software

support

■ Full-duplex operation

■ Standard option for Compaq ProLiant servers

■ Support for Microsoft Windows 2000 Advanced Server and Data Center Server

■ Compaq SAN Service Provider support for Microsoft Windows Sockets Direct

See Appendix A for regulatory compliance information and Appendix D, “ServerNet II

Specifications,” for detailed specifications.

ServerNet II Introduction 1-3

ServerNet II PCI Adapter Physical Description

Port X

Port Y

ServerNet II NIC

Figure 1-1. ServerNet II PCI Adapter

The Compaq ServerNet II Adapter, as shown in Figure 1-1:

■ Installs in a Compaq ProLiant server with an available half-length PCI expansion slot

■ Contains two 1000Base-CX copper-serial connectors, marked X and Y to help identify

the fabric

1-4 Compaq ServerNet II PCI Adapter and Switch Installation Guide

ServerNet II Switch Features

A ServerNet II Switch (the “Switch”) is a point-to-point networking device that connects up to

12 nodes in the ServerNet II System Area Network (SAN). It routes ServerNet II packets from

originating nodes to destination nodes on the servers. A ServerNet II Switch is required for a

SAN with three or more nodes and is optional for a SAN with two nodes.

■ Connects a maximum of 12 server nodes to one fabric (the internal interconnect

architecture used by a switch that redirects the data coming in on one of its ports out to

another of its ports; a fabric is also the combination of interconnected switches used

throughout a campus or large geographic area, which collectively provide a routing

infrastructure) of a ServerNet II SAN

■ Fault-tolerant fabrics achieved with two ServerNet II Switches connected to ServerNet II

PCI Adapters

■ Each ServerNet II connection operates at a packet speed of 1.25 Gb/s, with a packet

payload of up to 512 bytes; bi-directional bandwidth is 1.25 + 1.25 Gb/s, yielding an

aggregate bandwidth of 15 Gb/s for 12 ports

■ Status LEDs indicate power on or off, Switch fault/no fault, Switch fabric (X or Y), and

link-alive on the 12 ports

■ Monitoring of SAN operations through standard SNMP agents or through Compaq Insight

Manager (CIM)

■ Full-duplex operation

■ 2U high; rack mountable in a 19 X 30-inch rack (mounting rails and brackets included)

See Appendix D, “ServerNet II Specifications,” for detailed specifications.

Switch Physical Description

The front panel of the Compaq ServerNet II Switch is shown in Figure 1-2.

Power On Indicator

Fault Indicator

Link-Alive Indicators

Switch ID Labels

Y Indicator

X Indicator

On/Off Switch

Push-Button

Figure 1-2. ServerNet II Switch Front Panel

ServerNet II Introduction 1-5

Switch Front Panel

■ One on/off pushbutton power switch

■ One power on indicator (green), which indicates the Switch is powered on

■ One Fault indicator (yellow), which indicates a Switch fault

■ X and Y indicators (green), which identify the Switch fabric configuration

■ Twelve port link-alive indicators (green), which indicate link, no link, or fault on the

ports; numbered from left to right on the front bezel, 0 through 11

■ Two-digit static numeric label, optional identifier for the Switch

Switch Side Panel Connectors

■ Twelve 8-pin interface cable connectors on the Switch, numbered as indicated in the

illustration below:

Figure 1-3. Switch Port Numbering and Cable Connections

■ Twelve port link-alive indicators (green), one beside each port on the Switch; indicate link

(on) or no link (off) on the ports

■ Cable-routing assembly

Switch Rear Panel

■ AC power receptacle on the power supply

■ Two fan outlets

■ Power supplies (two types) are pictured below. Some Switch power supplies are auto-

sensing and have no voltage selection switch.

1-6 Compaq ServerNet II PCI Adapter and Switch Installation Guide

Voltage Switch

Power Socket

Remove the seal before

plugging in the power cord.

Be sure to set correctly

before plugging in

the power cord.

110

220

Figure 1-4. Switch Power Supply (with voltage switch selector)

Figure 1-5. Switch Power Supply (without voltage switch selector)

Interface Cable Features

Interface cables that connect the nodes are not included and you must order them separately. See

the section “ServerNet II Kits” in this chapter for part numbers.

Cable features include:

■ Supports IEEE industry standard, copper serial 1000Base-CX interfaces

■ Maximum cable length 25 meters (81.25 feet)

See Appendix D, “ServerNet II Specifications,” for moare cable specifications.

ServerNet II Introduction 1-7

ServerNet II CD-ROM

Software Applications

and Drivers on the CD-ROM

ServerNet II software drivers and other applications and utilities are on the CD shipped with the

ServerNet II Adapter. They are also available as SoftPaq™ files on the Compaq website. For

information about finding SoftPaqs on the Compaq website, see the Read This First card

packaged with the Adapter and Switch.

ServerNet II Drivers

When Microsoft Windows 2000 detects the ServerNet II PCI Adapter, the Windows Found New

Hardware Wizard opens and guides you through loading all the ServerNet II drivers

listed below.

■ ServerNet II PCI Adapter driver (Spad2) — Driver software installed on a ProLiant server

running Microsoft Windows Advanced Server or Datacenter Server. Spad2 is comprised

of several ServerNet II drivers:

G System Area Network Management driver (SANMan) — Provides the services needed

to manage ServerNet II SANs (System Area Networks) for Windows 2000

G ServerNet II NDIS Miniport driver (SnNDIS) — Windows 2000 NDIS 5.0-compliant

miniport driver; allows the standard Microsoft network architecture access to

ServerNet II hardware

G ServerNet II VI (Virtual Interface) driver (VIVA) — Provides application support and

VI kernel support over the ServerNet II Adapter device driver (Spad2) and

ServerNet II hardware

Software Applications and Utilities

■ ServerNet II Configuration Wizard (CONFIGWIZ) — Interface that leads you through

configuration of the SAN nodes. You start the ServerNet II Installation from the

ServerNet II CD by selecting the Node Configuration on this screen to invoke

CONFIGWIZ.

■ ServerNet II Administrative Utility (SANUtil) — Interface that initially helps you

configure and define the SAN topology, for example, add and delete nodes and Switches

in the SAN topology, specify port connections, select the SAN fabric for a Switch, view

node and Switch connectivity, and configure a backup server. After you install SANUtil

and configure the node, you can invoke SANUtil from Programs/ServerNet II

Administrative Utility/ ServerNet II Administrative Utility or from the desktop icon.

NOTE: You must first run SANUtil from the Primary administrative node to add the end nodes and

Switches to the topology. After a node is part of the topology, you can then run SANUtil from that end

node and add other nodes or add/change the backup configuration.

■ ServerNet II OnLine Diagnostics — Series of tests you can run to check the ServerNet II

installation, server-to-server and server-to-Switch, and SAN cabling. You can invoke

Diagnostics from Start/Programs/ServerNet Online Diagnostics.

1-8 Compaq ServerNet II PCI Adapter and Switch Installation Guide

Support Components

■ SNMP Adapter Component (SNMP-spa) — SNMP support for the Adapter

■ SNMP Switch Component (SNMP-sw) — SNMP support for the Switch

■ SNMP VI Agent Component (SNMP-vi) — SNMP support for the Virtual Interface (VI)

■ Compaq Insight Manager (CIM) XE ServerNet II Support — ServerNet II is compatible

with the Compaq web-based management tool Insight Manager XE (CIM). From a web

browser, you can connect to a server running Compaq Insight Manager XE and monitor

and manage all ServerNet II nodes and Switches.

Software to run CIM XE is provided on the Compaq Management CD packaged with all

Compaq ProLiant servers. Software to monitor ServerNet II from CIM XE is provided on

the ServerNet II CD. This software includes the Compaq Insight Manager XE ServerNet

II Extension and the ServerNet II SNMP agents.

For more information about CIM XE, see the section “Compaq Insight Manger XE (CIM

XE)” in Chapter 4 of this guide.

IMPORTANT: If you want to monitor your ServerNet II SAN using CIM XE (SNMP), you must enable

(install) SNMP Services in Windows 2000. This must be done before you can install ServerNet II SNMP

agents and drivers. If SNMP services are disabled, no SNMP agents (including those for ServerNet II)

will load.

If you did not install these services when you initially installed Windows 2000, you need to add them

from the Windows 2000 CD Management and Monitoring Tools window on the Windows 2000 CD. After

you install the services, you must open the Windows Control Panel/Computer Manager/Services and

configure the parameters listed there. See the Windows 2000 documentation for help with configuring

these parameters.

Compaq Windows Sockets Direct Component

■ SAN Service Provider System DLL — Software that allows Microsoft Windows Sockets

Direct application to route data over the Compaq SAN Service Provider through

ServerNet II, the Compaq SAN interconnect. See Appendix N, “Compaq Windows

Sockets Direct SAN Service Provider” in this guide for more information.

ServerNet II Introduction 1-9

Documents on the CD-ROM

Several documents in various file formats are available on the ServerNet II CD by clicking the

"Essential Information You MUST See" button on the Compaq ServerNet II Installation screen.

NOTE: You can access the Compaq ServerNet II Installation screen by double-clicking the CD-ROM drive

in My Computer, which will launch install.exe, or by double-clicking install.exe on the CD-ROM from

Windows Explorer. For more information about launching this application, see the section “Installing

ServerNet II Applications and Utilities” in Chapter 2 of this guide.

The following list of files appears:

1-10 Compaq ServerNet II PCI Adapter and Switch Installation Guide

■ Read Me First! (.txt) — Summary of information required to install the software

on the CD. Only those with extensive experience installing driver software on Windows

2000 operating systems should use this summary. File name readmefirst.txt.

■ Required to Install, Change, Fix (.html) — Entry screen to HTML collection that

describes installation, uninstall, update, alteration, and troubleshooting activity. File name

Introduction_Main_Menu.html

■ Release Notes (.txt) — Information pertinent to this particular release of ServerNet II

technology. File name release notes.txt.

■ Installation Guide (.pdf) — Compaq ServerNet II PCI Adapter and Switch Installation

Guide is a complete guide that describes ServerNet II hardware and software, installation,

troubleshooting; the guide can be viewed or printed with Adobe Acrobat Reader

(supplied). File name installguide.pdf.

Software Updates on the Compaq Website

For information about finding SoftPaqs on the Compaq website, see the Read This First card

packaged with the Adapter and Switch.

ServerNet II Introduction 1-11

Installation Requirements

WARNING: To avoid the risk of personal injury or damage to the equipment,

consult the Safety information and User’s Documentation provided with your

equipment before attempting the installation.

Many PCs are capable of producing energy levels that are considered

hazardous. Users should not remove enclosures nor should they bypass the

interlocks provided for removal of these hazardous conditions.

Installation should be performed by individuals who are both qualified in the

servicing of computer equipment and trained in the hazards associated with

products capable of producing hazardous energy levels.

To reduce the risk of personal injury from hot surfaces, allow the internal

system components to cool before touching.

CAUTION: See Appendix B, “Electrostatic Discharge” for precautions about handling your

device.

The ServerNet IIPCI Adapter and Switch require the following items for proper installation and

configuration:

■ ServerNet II PCI Adapter kit, one per ServerNet II node, as required for your SAN

topology

■ ServerNet II Switch kit, one per ServerNet II fabric, as required for your SAN topology

■ ServerNet II interfaces (ordered separately; see the section “ServerNet II Kits” in this

chapter for part numbers) or equivalent IEEE 1000Base-CX compliant, copper serial

cables, one or two per Adapter, as required for your SAN topology

■ Slotted, Phillips, and Torx screwdrivers

■ 8/32-inch nut driver

■ Compliance with the requirements of Microsoft Windows 2000 for Advanced Server

In addition, the Adapter requires the following components for installation in a Compaq

ProLiant server:

■ Intel Pentium processor-based server with an available half-length PCI expansion slot

■ Minimum of 16-MB RAM (1 additional MB is required for running diagnostic tests)

1-12 Compaq ServerNet II PCI Adapter and Switch Installation Guide

ServerNet II SAN Topologies

This section shows a progression of ServerNet II SAN topologies representing switchless and

switched configurations, single- and dual-fabrics, and topologies with and without fault

tolerance. These examples are for illustration only.

NOTE: Configuration worksheets are provided in Appendix M for your use in configuring your topology.

Figure 1-6. Example 1: Switchless Single-Fabric, 2-Node SAN

Figure 1-6 shows a two-node SAN topology connecting two ServerNet II PCI Adapters and

containing no ServerNet II Switch. In this example, you connect the ports on the ServerNet II

Adapters with a single SAN cable (X-to-X or Y-to-Y). This produces a single-port SAN

topology.

Figure 1-7. Example 2: Switchless, Dual-Fabric, Two-Node SAN

Figure 1-7 shows a 2-node SAN topology connecting two ServerNet II PCI Adapters and

containing no ServerNet II Switch. In this example, you connect the ports on the ServerNet II

Adapters with two SAN cables (X-to-X and Y-to-Y). This produces a dual-port topology on the

Adapters. If one port fails, the other port works as a backup to continue SAN operations.

ServerNet II Introduction 1-13

Figure 1-8. Example 3: Switched, Single-Fabric, Four-Node SAN

Figure 1-8 shows a single-fabric SAN topology containing one ServerNet II Switch and four

ServerNet II PCI Adapters installed in ProLiant servers. In this example, you connect either the

X port or Y port on the Adapters to the Switch. If you want to configure an X-fabric Switch,

connect the X port on the Adapter to the X-fabric Switch, as shown in Figure 1-8. If you want to

configure a Y-fabric Switch, connect the Y port on the Adapter to the Y-fabric Switch (not

shown). This produces a four-node SAN topology.

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