PCI SCSI Device Management System SDMS 4.0

Add to my manuals
234 Pages

advertisement

PCI SCSI Device Management System SDMS 4.0 | Manualzz

PCI SCSI Device

Management System

SDMS 4.0

U

SER

S

G

UIDE

The product(s) described in this book is a licensed product of Symbios

Logic.

SDMS is a trademark of Symbios Logic.

Other trademarks referred to in this guide are the trademarks of their respective corporations.

It is the policy of Symbios Logic to improve products as new technology, components, software, and firmware become available.

Symbios Logic, therefore, reserves the right to change specifications without prior notice.

Symbios Logic products are not intended for use in life-support appliances, devices, or systems. Use of any Symbios Logic product in such applications without written consent of the appropriate Symbios

Logic officer is prohibited.

Copyright ©1997

By Symbios Logic

All Rights Reserved

Printed in U.S.A.

Preface

About This Book

Symbios Logic

Technical Support

0

This User’s Guide is intended to explain how to install and configure the Symbios Logic SDMS Software in a

PCI computer system. The information is organized into chapters by individual operating system.

How to Get Updates

0

Software changes as products improve. The latest documentation and drivers are available for downloading from:

Symbios Logic Electronic Bulletin Board

(719) 573-3562

0

Your entire Symbios Logic host adapter solution has been designed for ease of use. However, if you require additional assistance, please contact the Symbios Logic

Technical Support Hot Line at (719) 573-3016. The hours of operation are from 7:30 to 4:30 (MST), Monday through Friday.

Before calling, please have the following information:

Which Symbios Logic host adapter are you installing?

What system are you installing into?

What SCSI devices are you connecting to the bus?

How is your system configured?

It is also helpful if you are at your system when you call.

Symbios Logic PCI SDMS User’s Guide i

Revision Record

Page No.

n/a n/a n/a n/a n/a

Date

9/93

2/94

8/94

10/95

2/97

Remarks

Rev 1.0 First official release.

Rev 2.0 All sections updated to reflect current product.

Rev 3.0 All sections updated to reflect current product.

Rev 4.0 All sections updated to reflect current product.

Rev 5.0 All sections updated to reflect current product.

ii Symbios Logic PCI SDMS User’s Guide

Table of Contents

Contents

Chapter 1

Introduction

General Description ................................................. 1-1

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

SCSI BIOS......................................................... 1-3

SDMS Device Drivers......................................... 1-4

Before You Begin ..................................................... 1-6

Basic Rules For SCSI Host Bus Adapter and Device

Installation .................................................... 1-6

Chapter 2

Device Drivers for DOS/Windows

Introduction ............................................................. 2-1

When You Need to Load Drivers ........................ 2-1

Automatic Installation of SDMS for DOS ................. 2-3

Using the DOS Installation Utility ....................... 2-3

About Your ASPI8XX.SYS Driver............................ 2-4

Features ............................................................. 2-4

Description......................................................... 2-4

Installing Your ASPI8XX.SYS Driver ....................... 2-5

Command Line Options ..................................... 2-5

Troubleshooting ............................................... 2-11

About Your SYMDISK.SYS Driver ........................ 2-13

Features ........................................................... 2-13

Description....................................................... 2-13

Symbios Logic PCI SDMS User’s Guide iii

Table of Contents iv

Installing Your SYMDISK.SYS Driver .................... 2-14

Command Line Options .................................... 2-14

Troubleshooting................................................ 2-18

About Your SYMCD.SYS Driver ............................ 2-21

Features ............................................................ 2-21

Description ....................................................... 2-21

Installing Your SYMCD.SYS Driver ....................... 2-22

Command Line Options .................................... 2-23

Troubleshooting................................................ 2-25

About Your WIN8XX.386 Driver ........................... 2-26

Features ............................................................ 2-26

Description ....................................................... 2-26

Installing Your WIN8XX.386 Driver ....................... 2-27

Command Line Options .................................... 2-29

Troubleshooting................................................ 2-32

Important Additional Information For Windows

Users .................................................................... 2-35

Enabling 32-bit Disk and File Access in

Windows ..................................................... 2-35

Restrictions ....................................................... 2-35

Important Additional Information For DOS Users ... 2-36

Assignment of Drive Letters............................... 2-36

Using the SCSI Low-level Format Utility................. 2-37

Features ............................................................ 2-37

Description ....................................................... 2-37

Troubleshooting................................................ 2-38

Using the SCSI SYM53C8XX CONFIG Utility ...... 2-40

Features ............................................................ 2-40

Description ....................................................... 2-40

Troubleshooting................................................ 2-41

Using the SCSI SYM53C8XX VERIFY Utility........ 2-42

Features ............................................................ 2-42

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Description....................................................... 2-42

Troubleshooting ............................................... 2-43

Using the Host Adapter Flash Utility....................... 2-44

Features ........................................................... 2-44

Description....................................................... 2-44

Chapter 3

Device Drivers for Windows 95

Introduction for Windows 95 .................................... 3-1

Features ............................................................. 3-1

Description......................................................... 3-2

Installing Your SYMC8XX.MPD Driver .................. 3-3

Preparing a Symbios Driver Diskette ................... 3-3

New System Installation ...................................... 3-3

Existing System Installation................................. 3-5

Existing System Using ASPI8XX.SYS DOS ASPI

Driver ........................................................... 3-6

Verifying Correct Driver Installation .................... 3-8

Command Line Options ..................................... 3-9

Troubleshooting ............................................... 3-10

Important Additional Information ........................... 3-12

Enabling/Disabling Ultra SCSI (Fast 20)

Support ...................................................... 3-12

Multiple Symbios Logic Host Adapter

Considerations ............................................ 3-13

Chapter 4

Device Drivers for OS/2

Introduction ............................................................. 4-1

Features of the SDMS OS/2 Driver ..................... 4-1

Symbios Logic PCI SDMS User’s Guide v

Table of Contents vi

Description of the SDMS OS/2 Driver ................. 4-2

Installing Your SDMS OS/2 Driver ........................... 4-3

Installing SYM8XX.ADD (with OS/2 already installed) ....................................................... 4-3

Installing SYM8XX.ADD and OS/2 from a floppy to a SCSI Hard Drive ........................................ 4-4

Installing SYM8XX.ADD and OS/2 from a SCSI

CD-ROM to a SCSI Hard Drive .................... 4-5

Driver Order in the CONFIG.SYS File ................ 4-6

Command Line Options ...................................... 4-7

Troubleshooting................................................ 4-15

Chapter 5

Device Driver for SCO UNIX

Introduction ............................................................. 5-1

Features .............................................................. 5-2

Description ......................................................... 5-3

Installing Your SCO UNIX Driver ............................ 5-6

Procedure 1 Existing System Installation .............. 5-6

Procedure 2 New System Installation ................. 5-16

Troubleshooting................................................ 5-18

Important Additional Information ........................... 5-22

How to Remove a SCSI Disk Drive From SCO

UNIX ......................................................... 5-22

Chapter 6

Device Drivers for UnixWare

Introduction ............................................................. 6-1

Features .............................................................. 6-2

Description ......................................................... 6-2

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Installing Your SDMS UnixWare Driver ................... 6-4

Installing the Driver During UnixWare

Installation .................................................... 6-4

Updating UnixWare 2.xx With the C8xx Driver ... 6-5

Troubleshooting ................................................. 6-9

Chapter 7

Device Drivers for NetWare

Introduction ............................................................. 7-1

Symbios Logic NWPA Driver ................................... 7-1

Features ............................................................. 7-1

Description......................................................... 7-2

ASPI Support ..................................................... 7-3

Installing Your NWPA NetWare Drivers ................... 7-4

Preparing Your System for NWPA Drivers .......... 7-4

For An Existing Installation Of NetWare With

Symbios Logic SDMS (DDFS) NetWare Drivers

Installed........................................................ 7-5

For NetWare 4.11 New Installations.................... 7-6

Reconfiguring Driver Options.............................. 7-7

For NetWare 4.11 SFT-III Installations............... 7-8

Reconfiguring Driver Options.............................. 7-8

NWPA Command Line Options ............................. 7-10

Information Options ......................................... 7-10

NetWare NWPA Driver Customizable Options.. 7-11

Important Additional NWPA Information ............... 7-17

For Information Pertaining to a Specific Driver .. 7-17

DOS Access Dependencies................................ 7-17

Supported DOS Configurations......................... 7-18

When Using the 3.XX BIOS ............................. 7-18

When Using the 4.XX BIOS ............................. 7-18

Symbios Logic PCI SDMS User’s Guide vii

Table of Contents viii

When Using ASPI8XX.SYS .............................. 7-18

When Using No SDMS BIOS ........................... 7-20

Symbios Logic SDMS Drivers ................................. 7-21

Features ............................................................ 7-21

Description ....................................................... 7-22

ASPI Support.................................................... 7-22

Installing Your SDMS NetWare Drivers .................. 7-23

For An Existing Installation Of NetWare With SDMS

Drivers Installed .......................................... 7-23

For NetWare v3.12 New Installations ................ 7-24

For NetWare v4.xx New Installations ................. 7-25

For NetWare v4.1x SFT-III Installations............ 7-27

For NetWare v4.1x NWOS2 Installations........... 7-27

Command Line Options .................................... 7-28

The SDMS Power Management Utilities ................. 7-39

Installing the Power Management Utilities ......... 7-40

Using the PMMAKE.NLM Utility .................... 7-40

Using the PMSCHED.NLM Utility................... 7-42

Important Additional SDMS Information ................ 7-45

For Information Pertaining to a Specific Driver .. 7-45

About Memory Allocation ................................. 7-45

Optimal Use of Command Line Options ............ 7-46

DOS Access Dependencies ................................ 7-47

Supported DOS Configurations ......................... 7-48

When Using An SDMS 3.XX BIOS................... 7-48

When Using An SDMS 4.XX BIOS................... 7-49

When Using No SDMS BIOS ........................... 7-50

Chapter 8

Device Drivers for Windows NT

Introduction for Windows NT 3.5x/4.x...................... 8-1

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Features ............................................................. 8-2

Description......................................................... 8-3

Installing Your SYMC8XX.SYS Driver .................... 8-4

Preparing a Symbios Driver Diskette ................... 8-4

New System Installation ...................................... 8-4

Existing System Installation................................. 8-6

Disk Mirroring.................................................... 8-9

Command Line Options ................................... 8-11

Troubleshooting ............................................... 8-11

Glossary

Glossary ...................................................................Glossary-1

Symbios Logic PCI SDMS User’s Guide ix

Table of Contents x Symbios Logic PCI SDMS User’s Guide

List of Figures

List of Figures

Chapter 1

Introduction

Figure 1-1 The Symbios Logic SCSI Device

Management System ............................ 1-1

Figure 1-2 SDMS Information Flow ...................... 1-3

Chapter 2

Device Drivers for DOS/Windows

Figure 2-1 How SDMS DOS Drivers

Communicate....................................... 2-1

Chapter 5

Device Driver for SCO UNIX

Figure 5-1 Symbios Logic Installation Tools ........... 5-2

Chapter 6

Device Drivers for UnixWare

Figure 6-1 Portable Device Interface (PDI)

Architecture ......................................... 6-2

Symbios Logic PCI SDMS User’s Guide xi

List of Figures

Chapter 8

Device Drivers for Windows NT

Figure 8-1 SCSI I/O Flow in Windows NT............. 8-2 xii Symbios Logic PCI SDMS User’s Guide

Table of Contents

Introduction

Symbios Logic PCI SDMS User’s Guide

Chapter 1

Introduction

General Description 1-1

Overview

SCSI BIOS

1-2

1-3

Using the Symbios Logic SCSI BIOS Configuration

Utility 1-4

SDMS Device Drivers 1-4

Before You Begin 1-6

Basic Rules For SCSI Host Bus Adapter and Device

Installation 1-6

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Introduction

Symbios Logic PCI SDMS User’s Guide

Figure 1-1

1

The Symbios Logic SCSI Device

Management System

Introduction

1

General Description

General Description

The Symbios Logic SCSI Device Management System

(SDMS) is a complete software package that solves the increasingly complex problem of managing system I/O. It seamlessly addresses hardware and software interfaces by supporting the Symbios Logic family of SCSI processors and controllers, and a wide range of SCSI peripheral devices, while offering interoperability across application programs, operating systems, and host platforms.

SDMS provides a standard method to interface SCSI I/O subsystems with devices, operating systems, and application software. It also enhances system capabilities already provided by SCSI controllers and processors by facilitating system-wide SCSI device access.

1

Supports

Supports

Operating System

SDMS SCSI Device Driver

SDMS SCSI BIOS

Symbios Logic Controller or

Processor

Symbios Logic PCI SDMS User’s Guide

1 -1

Introduction

Overview

Overview

A Symbios Logic SCSI controller or processor can control peripherals such as hard disk drives, CD-ROM drives, tape drives, and removable media. SCSI peripherals are intelligent devices that do not need the constant attention required by non-intelligent devices.

You can connect up to 15 SCSI peripheral devices (via the

SCSI bus) to a SCSI host adapter on which the SCSI controller or processor resides.

A SCSI host adapter can function as a secondary adapter in a system that already has a primary hard drive controller card (IDE, ESDI, ST506). Only SCSI host adapters can do this, expanding the possibilities for system configuration.

1

1-2 Symbios Logic PCI SDMS User’s Guide

Figure 1-2

1

SDMS Information Flow

SCSI BIOS

Introduction

Overview

Operating System

SDMS SCSI Driver

SDMS SCSI BIOS

Symbios Logic

Controller or Processor

SCSI Bus

SCSI Peripherals

1

A SCSI BIOS is the bootable ROM code that manages

SCSI hardware resources. It is specific to a family of

Symbios Logic SCSI controllers or processors. A Symbios

Logic SCSI BIOS integrates with a standard system

BIOS, extending the standard disk service routine provided through INT13.

During its boot time initialization, the SCSI BIOS determines if another hard disk is already installed. If there is, the SCSI BIOS maps any SCSI drives it finds behind the drive already installed. Otherwise, the SCSI

BIOS installs drives starting with the system boot drive.

In this case, the system boots from a drive controlled by the SCSI BIOS.

Symbios Logic PCI SDMS User’s Guide 1-3

Introduction

Overview

Using the Symbios Logic SCSI BIOS

Configuration Utility

If you have SDMS BIOS version 4.x or higher, and it includes the Symbios Logic SCSI BOS Configuration utility, you can change the default configuration of your

SCSI host adapters. You may decide to alter these default values if there is a conflict between device settings, or if you need to optimize system performance.

You can see the version number of your SDMS BIOS in a banner displayed on your computer monitor during boot.

If the utility is available, a message also appears on your monitor (for about five seconds) that looks like this:

1

Press Ctrl-C to start Configuration Utility

To use this menu driven utility, your SCSI host adapter must have NVRAM (non-volatile memory) to store the changes.

IMPORTANT:

This utility is a powerful tool. If, while using it, you somehow disable all your controllers, pressing Ctrl-A (or

Ctrl-E on version 4.04 or later) after memory count during reboot allows you to recover and reconfigure.

The SDMS device drivers configure themselves based on the settings stored in NVRAM. If you change the default configuration settings for your SCSI host adapter, the drivers reflect these changes.

SDMS Device Drivers

1

The SDMS device drivers translate an operating system

I/O request into a SCSI request. Each Symbios Logic

SCSI device driver is operating system specific, and is designed to work on standard Symbios Logic chip implementations.

1-4 Symbios Logic PCI SDMS User’s Guide

Introduction

Overview

Symbios logic currently provides PCI SDMS device drivers for the following operating systems:

DOS/Windows

Windows 95

OS/2

SCO Unix

UnixWare

NetWare - NWPA and DDFS

Windows NT

Device driver installation and configuration instructions for each of these operating systems are provided in the

Symbios Logic PCI SDMS 4.0 User's Guide.

Symbios Logic PCI SDMS User’s Guide 1-5

Introduction

Before You Begin

Before You Begin

SDMS software requires an IBM PC/AT or compatible computer with an 80386 or higher microprocessor. An understanding of basic operating system commands is assumed. In addition, users of this manual should have a general knowledge of the SCSI standard.

Before using the SDMS software, you should configure the Symbios Logic SCSI controller into your system, taking into account the configuration of other host adapters and system resources (see Basic Rules... listed below).

CAUTION:

Symbios Logic recommends that you back up all data before making any changes or installing any software, including Symbios Logic SCSI controllers and software.

Failure to adhere to this accepted computer practice may lead to loss of data.

Basic Rules For SCSI

Host Bus Adapter and

Device Installation

1

You must terminate both ends of the SCSI bus. Refer to the hardware manuals for the devices and the host adapter to determine what the terminators are, and where they are located.

Unless your system is SCAM (SCSI Configured

AutoMatically) capable, you must configure each SCSI device with a different SCSI ID number. Refer to the hardware manuals for the devices and the host adapter to locate where the jumpers or dip switches are for setting

SCSI ID numbers. Usually the host adapter is ID 7. The devices are then set at IDs 0 through 6 (plus 8 through 15 for Wide SCSI) using the BIOS configuration utility. The

1

1-6 Symbios Logic PCI SDMS User’s Guide

Introduction

Before You Begin

bootable hard drive must have the lowest numerical SCSI

ID.

The red or blue line on a standard SCSI cable (or the black line on one end of a multi-colored SCSI cable) designates pin one on the cable connector and must connect to pin one on the device or host adapter connector. Refer to the hardware manuals for the devices and the controller to locate pin one of the connector.

If the system already has an internal bootable hard drive

(IDE, ESDI, ST506), the drivers for the SCSI devices must reside on the internal bootable hard drive.

Symbios Logic PCI SDMS User’s Guide 1-7

Introduction

Before You Begin

1-8 Symbios Logic PCI SDMS User’s Guide

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for DOS/Windows

Chapter 2

Device Drivers for

DOS/Windows

Introduction

When You Need to Load Drivers

ASPI8XX.SYS

SYMDISK.SYS

SYMCD.SYS

WIN8XX.386

Automatic Installation of SDMS for DOS

Using the DOS Installation Utility

About Your ASPI8XX.SYS Driver

Features

Description

ASPI8XX.SYS

ASPI8XX.SYS

Installing Your ASPI8XX.SYS Driver

Command Line Options

Using the /ASK Option

2-5

2-5

2-5

Using the /WIDTH (or /W) Option 2-6

Using the /DISCONNECT (or /DC) Option 2-6

2-3

2-3

2-4

2-4

2-4

2-4

2-4

2-1

2-1

2-2

2-2

2-2

2-2

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for DOS/Windows

Using the /SYNCH_RATE (or /SR) Option

Using the /PARITY (or /P) Option

Using the /EXCLUDE (or /X) Option

Using the /HOST_ID (or /ID) Option

Using the /SCAM Option

Using the /TIMEOUT (or /T) Option

Using the /VERBOSE (or /V) Option

Troubleshooting

2-7

2-7

2-8

2-9

2-9

2-10

2-10

2-11

About Your SYMDISK.SYS Driver

Features

Description

2-13

2-13

2-13

Installing Your SYMDISK.SYS Driver

Command Line Options

Using the /ASK Option

Using the /UNITS= Option

SYMDISK.SYS

Using the /EXCLUDE= Option

Using the /SSIZE= Option

SYMDISK.SYS

Using the /SPINDOWN= Option

Troubleshooting

About Your SYMCD.SYS Driver

Features

Description

Installing Your SYMCD.SYS Driver

Command Line Options

2-14

2-14

2-14

2-15

2-15

2-16

2-16

2-16

2-17

2-18

2-21

2-21

2-21

2-22

2-23

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for DOS/Windows

Using the /ASK Option

Using the /UPTOLUN= Option

Using the /NOBCD Option

Troubleshooting

2-24

2-24

2-24

2-25

About Your WIN8XX.386 Driver

Features

Description

2-26

2-26

2-26

Installing Your WIN8XX.386 Driver

Command Line Options

Using the SYNCHRONOUS Option

Using the WIDE Option

Using the DISCONNECT Option

Using the SCAM Option

Using the PARITYCHECKING Option

Using the VERBOSE Option

Using the FASTDISK Option

Using the TIMEOUT Option

Troubleshooting

Important Additional Information For

Windows Users 2-35

Enabling 32-bit Disk and File Access in Windows 2-35

Restrictions 2-35

Important Additional Information For DOS Users 2-36

Assignment of Drive Letters 2-36

An Example: 2-36

2-27

2-29

2-29

2-30

2-30

2-30

2-30

2-31

2-31

2-31

2-32

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for DOS/Windows

Using the SCSI Low-level Format Utility

Features

Description

Troubleshooting

2-37

2-37

2-37

2-38

Using the SCSI SYM53C8XX CONFIG Utility

Features

Description

Troubleshooting

2-40

2-40

2-40

2-41

Using the SCSI SYM53C8XX VERIFY Utility

Features

Description

Troubleshooting

2-42

2-42

2-42

2-43

Using the Host Adapter Flash Utility

Features

Description

2-44

2-44

2-44

Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

2

Introduction

Introduction

In SDMS 4.0, the SCSI BIOS for the Symbios Logic family of PCI SCSI chips is capable of mapping SCSI hard disk drives behind any non-SCSI hard disk drives

(IDE, ESDI, etc.) within the same system. A driverless solution will allow connection of up to 24 hard drives

(SCSI and non-SCSI) under DOS 5.0 and above.

Full Virtual DMA Services (VDS), including features such as scatter-gather, are also supported by the SCSI

BIOS. Therefore, to gain maximum performance, you should disable any double buffer option provided by disk caching software (such as Microsoft's SMARTDRV.EXE) for all drives handled through SDMS.

When You Need to

Load Drivers

2

Connecting peripherals other than hard disk drives requires loading the appropriate driver. Some of the drivers work together, and some are capable of direct communication with a Symbios Logic PCI/SCSI controller.

Figure 2-1

2

How SDMS DOS Drivers

Communicate

SYMDISK SYMCD

ASPI8XX

WIN8XX

2

Symbios Logic SCSI Chip

Symbios Logic PCI SDMS User’s Guide

2 -1

Device Drivers for DOS/Windows

Introduction

ASPI8XX.SYS

is an ASPI (Advanced SCSI

Programming Interface) manager which provides standard ASPI compatibility between your SCSI host adapter hardware and ASPI compatible applications.

SYMDISK.SYS

is a device driver for SCSI disk drives, and works through the ASPI manager.

SYMCD.SYS

i

s a device driver for CD-ROM drives, and works through the ASPI manager.

2

2

WIN8XX.386

is a Windows ASPI manager that does

2 not require the ASPI8XX.SYS driver to function.

However, if either the SYMCD.SYS or SYMDISK.SYS driver is needed, ASPI8XX.SYS is still required.

The following sections list these drivers, their features, and their loading requirements.

2

2-2 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Automatic Installation of SDMS for DOS

Automatic Installation of

SDMS for DOS

2

Using the DOS

Installation Utility

2

The Symbios Logic SDMS DOS installation utility provides a quick and easy method for performing either an automatic or custom installation of the SCSI device drivers in a DOS/Windows environment. It works with any system using an SDMS supported Symbios Logic

SCSI chip. The installation utility identifies the system, scans the SCSI bus, and properly installs the needed

SCSI device drivers.

The SDMS Drivers diskette containing the DOS device drivers also holds the DOS installation utility. To use the utility, insert the disk into your floppy drive while in the

DOS environment, and type:

INSTALL

Then follow the directions presented on the screen.

When performing a custom installation, an understanding of the information presented in the following sections for manual installation may prove useful.

Symbios Logic PCI SDMS User’s Guide 2-3

Device Drivers for DOS/Windows

About Your ASPI8XX.SYS Driver

About Your ASPI8XX.SYS

Driver

2

Features

Description

2

Supports Advanced SCSI Programming Interface

(ASPI) applications

Supports single-threaded I/O

Supports up to four host adapters

Releases initialization code for smaller runtime size

Performs synchronous negotiation (including Fast-20)

Performs Wide SCSI negotiation

Full VDS (Virtual DMA Services) support, including scatter-gather

Allows Disconnect/Reselect

Supports adapter exclusion

Allows shared interrupts

2

ASPI8XX.SYS

is an ASPI manager which provides an interface to popular ASPI applications. It is required when you want to use SYMDISK.SYS or SYMCD.SYS,

2 or whenever you want to run an ASPI application.

ASPI8XX.SYS

replaces an SDMS BIOS (if present),

2 and fully supports all devices supported by the BIOS. If an SDMS BIOS is not present, only an ASPI interface is provided.

2-4 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

Installing Your ASPI8XX.SYS

Driver

2

1

Use the COPY command to copy the ASPI8XX.SYS driver from the SDMS SCSI Drivers disk to your boot disk.

2

Add this line to your system’s CONFIG.SYS file:

DEVICE=C:[path]ASPI8XX.SYS

This line must appear before any line loading other

ASPI drivers (like SYMCD.SYS, SYMDISK.SYS, or any other ASPI compliant driver/application).

Command Line

Options

2

The ASPI8XX.SYS driver has several configurable features which are set via switches on the command line in your CONFIG.SYS file.

In the following descriptions, 'path' refers to the adapter number (boot order designation), and 'id' refers to the

SCSI ID. The following conventions are also used:

[ ] items in brackets are optional

* means repeat item 0 or more times

IMPORTANT No spaces are allowed in specifying these command line options. Spaces are required between different command line options.

Using the /ASK Option

This option prompts you at system boot-up time whether to load the ASPI8XX.SYS driver.

2

Symbios Logic PCI SDMS User’s Guide 2-5

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

Option Syntax:

/ASK

For example, to activate this option, the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /ASK

Using the /WIDTH (or /W) Option

The width parameter defines the maximum data width negotiated with a device. This is used with host adapters capable of 16-bit data transfers. Valid settings are 8 or 16.

2

Option Syntax:

Option Syntax: /WIDTH=n<path[:id]>[,n<path[:id]>]*

For example, if your first host adapter (boot order designation = 0) is a 16-bit adapter, and you wish to force

8-bit transfers to a device at SCSI ID 2, the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /WIDTH=8<0:2>

Using the /DISCONNECT (or /DC) Option

SCSI devices have the ability to disconnect from the bus during an I/O transfer. This option is used to allow a device to disconnect. If a particular host adapter has parity checking disabled, all devices attached to it must have disconnects disabled, since parity is required during the reselection phase. Valid options are ON (allow disconnects) or OFF (do not allow disconnects). The default for all devices is ON.

2

2-6 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

Option Syntax:

/DISCONNECT=n<path[:id]>[,n<path[:id]>]*

For example, to disable disconnects on the device attached to the first host adapter (boot order designation

= 0) at SCSI ID 2, the line in your CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /DISCONNECT=OFF<0:2>

Using the /SYNCH_RATE (or /SR) Option

This option sets the maximum synchronous transfer rate

(in mega transfers per second) to negotiate with a particular device. The allowable values are 0, 5, 10, and

20, providing the host adapter is capable of the specified speed. To turn off synchronous transfers for a particular device, you should specify 0. The default value is the fastest rate supported by your host adapter.

Option Syntax:

2

/SYNCH_RATE=n<path[:id]>[,n<path[:id]>]*

For example, to turn off synchronous transfers to the device attached to the first host adapter (boot order designation = 0) at SCSI ID 3, the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /SYNCH_RATE=0<0:3>

Using the /PARITY (or /P) Option

This option tells your host adapter to disable the SCSI bus data integrity checking feature known as parity. Some

SCSI devices do not generate parity. Valid options are ON

(check parity) or OFF (do not check parity). The default for all devices is ON.

2

Symbios Logic PCI SDMS User’s Guide 2-7

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

WARNING When disabling parity checking, it is necessary to disable disconnects for that adapter since you cannot disable parity checking for reselection. If a device does not generate parity, and it disconnects, the I/O will never complete.

Option Syntax:

/PARITY=n<path[,path]*>[,n<path[,path]*>]*

For example, to turn off parity checking on the first host adapter (boot order designation = 0), the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /PARITY=OFF<0>

Using the /EXCLUDE (or /X) Option

This option allows you to exclude support for an adapter that does not currently have BIOS support. You may not exclude an adapter that is supported (included) by the

BIOS when you boot your system. This option has three required parameters:

a

PCI Device ID

b

PCI Bus Number

c

PCI Device/Function Number

These parameters identify the specific adapter you want to exclude. To obtain these parameters, boot your system using the /VERBOSE command line option (explained later in this section). The parameters for the adapter or path you wish to exclude will display on your monitor.

2

Option Syntax:

/EXCLUDE<a:b:c>[,<a;b;c>]*

2-8 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

For example, if you found the adapter you wish to exclude to have PCI Device ID 3, PCI Bus Number 0, and PCI

Device/Function Number 68, then the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /EXCLUDE<3:0:68>

Using the /HOST_ID (or /ID) Option

This option lets you alter the SCSI ID for a host adapter.

On an 8-bit adapter, the SCSI IDs are 0-7. On a 16-bit adapter, the SCSI IDs are 0-15 (it is suggested that IDs 8-

15 are not used for your adapter). This option will not allow you to select a SCSI ID already in use.

2

Note:

You are not allowed to change the SCSI ID of any adapter currently supported by the BIOS.

Option Syntax:

/HOST_ID=n<path>[,n<path>]*

For example, to change the SCSI ID of your second host adapter (path=1) to ID=6 (providing that adapter is not controlled by the BIOS), the line your CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /HOST_ID=6<1>

Using the /SCAM Option

This option allows you to disable support for the SCSI

Plug and Play protocol called SCAM (SCSI Configured

AutoMatically). SCAM support is ON by default. You may change the SCAM setting only if the path (adapter) specified is not controlled by the BIOS.

Option Syntax:

2

/SCAM=n<path>[,n<path>]*

Symbios Logic PCI SDMS User’s Guide 2-9

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

For example, to turn off SCAM support on the second host adapter (boot order designation = 1), the line in your

CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /SCAM=OFF<1>

Using the /TIMEOUT (or /T) Option

The ASPI8XX.SYS driver uses a time-out mechanism to detect certain errors. When the driver issues a command to a SCSI device, a timer is started. If the timer expires before the command completes, the driver assumes something has gone wrong, and takes steps to recover.

The default for this option is 10 seconds, if the device is

BIOS controlled. If the device is not BIOS controlled, the default is 0 seconds. Also, non-volatile memory settings can alter these defaults. The maximum setting is 0, which is no time-out. The range of allowable values is 0-65535 seconds.

Option Syntax:

2

/TIMEOUT=n<path[:id]>[,n<path[:id]>]*

For example, you might have a particularly slow device

(with SCSI ID 3) on the first host adapter (boot order designation = 0). If you wish to extend the time-out for this device to 60 seconds, the line in your CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /TIMEOUT=60<0:3>

Using the /VERBOSE (or /V) Option

This Option causes more detailed information to appear on your monitor, after the ASPI8XX.SYS driver is initialized, during a system boot. This is useful if you have multiple adapters in your system and need to know the

PCI Device ID, the PCI Bus number, and the PCI

2

2-10 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver

Device/Function number for each adapter. For example, this information is required to use the /EXCLUDE option already described in this section.

Option Syntax:

/VERBOSE

For example, to see more detailed adapter information displayed when you boot, the line in your CONFIG.SYS file that loads ASPI8XX.SYS should look like this:

DEVICE=C:[PATH]ASPI8XX.SYS /VERBOSE

Troubleshooting

2

SYSTEM LOCKS UP AT BOOT TIME.

a

Check for conflicts with other ASPI managers.

b

Check for correct loading sequence in the

CONFIG.SYS file.

c

Boot the system.

THE DEVICE DRIVER DOES NOT RECOGNIZE

ONE OF THE NON-BOOT SCSI PERIPHERALS

(system may lock up).

a

Make sure the drivers were installed in the correct sequence.

b

Make sure the drivers’ CONFIG.SYS line has the correct path to the drivers.

c

Power down all units in the system.

d

Make sure all SCSI devices have unique ID numbers.

e

Make sure both ends of the SCSI bus are terminated.

Symbios Logic PCI SDMS User’s Guide 2-11

Device Drivers for DOS/Windows

Installing Your ASPI8XX.SYS Driver f

Check all cable and power connections.

g

Boot the system.

2-12 Symbios Logic PCI SDMS User’s Guide

Features

Description

Device Drivers for DOS/Windows

About Your SYMDISK.SYS Driver

About Your SYMDISK.SYS

Driver

2

2

Supports removable media devices

Supports magneto optical devices

Supports non-512-byte sectors (1024, 2048, 4096)

Supports multiple logical unit number (LUN) support

Supports multiple host adapters when adapter has not been controlled by BIOS (no INT13 devices)

Can reserve drive letters for installed devices without media present in the device (see /UNITS under

Command Line Options)

Can add drive letters

Supports power management (to spin down drives)

2

SYMDISK.SYS is needed when connecting drives with non-512-byte sectors, and when connecting removable drives if the user wants to change the media. It is also required to obtain drive letters for devices (adapters) that are not supported by a BIOS. SYMDISK.SYS communicates through ASPI8XX.SYS. To use the

SYMDISK.SYS driver you must load ASPI8XX.SYS also.

Symbios Logic PCI SDMS User’s Guide 2-13

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

Installing Your SYMDISK.SYS

Driver

2

1

Use the COPY command to copy the appropriate drivers from the SDMS SCSI Drivers disk to your boot disk.

2

Add the lines shown below to your system's

CONFIG.SYS file. The ASPI8XX.SYS driver is also required. List the drivers in this sequence:

DEVICE=C:[PATH]ASPI8XX.SYS

DEVICE=C:[PATH]SYMDISK.SYS

Command Line

Options

2

The SYMDISK.SYS device driver has several embedded functions which are accessed via switches on the command line. These options are described below, and use the following conventions:

[ ] items in brackets are optional

* items in brackets followed by an * mean repeat 0 or more times

| choose one of the given items

IMPORTANT No spaces are allowed in specifying these command line options. Spaces are required between different command line options.

Using the /ASK Option

This option prompts the user at system boot-up whether to load SYMDISK.SYS or not. To use this option, the

2

2-14 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

line in CONFIG.SYS that loads SYMDISK.SYS should look like this:

DEVICE=C:[PATH]SYMDISK.SYS /ASK

Using the /UNITS= Option

2

Note:

It is strongly suggested that you use this option when using removable media with more than one partition.

SYMDISK.SYS

allows the use of removable media, such as cartridge hard drives, each of which might have a different number of partitions. If media with more than

2 one partition are used, set this option to the maximum number of partitions on any one media. To use this option, the line in CONFIG.SYS that loads

SYMDISK.SYS should look like this:

DEVICE=C:[PATH]SYMDISK.SYS

/UNITS=path:id:lun:num_units

[,path:id:lun:num_units]*

For example, if there is a removable media drive at the first host adapter set to SCSI ID 2, and you need to reserve three partitions, the command line should look like this:

DEVICE=C:[PATH]SYMDISK.SYS /UNITS=0:2:0:3

When SYMDISK.SYS initializes, it will default to either:

a

One drive letter for a removable media device with no media present.

b

The number of partitions found on the media in the removable media device.

Symbios Logic PCI SDMS User’s Guide 2-15

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

Note:

The full path, id, lun, and num_units values are required for this option. Also, there is a limit of 24 devices.

Using the /EXCLUDE= Option

This option allows a user to exclude a 'path:id:lun' combination from being scanned or controlled by

SYMDISK.SYS. The path parameter is mandatory with all IDs and LUNs for that path excluded by default if just the path is specified. To use this option, the line in

CONFIG.SYS that loads SYMDISK.SYS should look like this:

2

DEVICE=C:[PATH]SYMDISK.SYS/EXCLUDE=path[:id[:lun]]

[,path[:id[:lun]]]*

As an example, for path 0, id 2, and lun 0 the command line should look like this:

DEVICE=C:[PATH]SYMDISK.SYS /EXCLUDE=0:2:0

Note:

There is a limit of 24 'path:id:lun' combinations allowed.

Using the /SSIZE= Option

SYMDISK.SYS

will default to the largest sector size

2 found during boot, handling all different sector sizes found. In the case of removable media, SYMDISK.SYS will assume a 512 byte sector size when no media is present. This option overcomes this limitation. To use this option, the line in CONFIG.SYS that loads

SYMDISK.SYS should look like this:

2

DEVICE=C:[PATH]SYMDISK.SYS /SSIZE=512|1024|2048|4096

For example, if a removable media drive is used that has a sector size of 2048 bytes, the command line should look like this:

2-16 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

DEVICE=C:[PATH]SYMDISK.SYS /SSIZE=2048

Note:

If SYMDISK.SYS comes across a sector size larger than the one specified in this option, or if it finds a sector larger than the default, it will refuse to read/write to that media. It will report an invalid media error to DOS.

Using the /SPINDOWN= Option

This is a power management feature that can automatically spin down a disk when the disk is not accessed for a specified amount of time. The default spindown time is 15 minutes. You can specify a new spindown time in hours and minutes (hh:mm) with a minimum time of 1 minute. To use this option, the line in

CONFIG.SYS that loads SYMDISK.SYS should look like this:

2

DEVICE=C:[PATH]SYMDISK.SYS

/SPINDOWN=hh:mm<path[:id[:lun]]>

[,hh:mm<path[:id[:lun]]>]

For example, if you wish to spindown a device on path 0,

ID 2, and LUN 0, after one hour and five minutes of inactivity, the command line should look like this:

DEVICE=C:[PATH]SYMDISK.SYS /SPINDOWN=1:5<0:2:0>

Or, if you wish to spindown all devices after the default time-out of 15 minutes, the command line should look like this:

DEVICE=C:[PATH]SYMDISK.SYS /SPINDOWN=<>

Remember, the <> are required when you specify a path:id:lun in this option.

Symbios Logic PCI SDMS User’s Guide 2-17

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

Troubleshooting

2

THE COMPUTER LOCKS UP AND WILL NOT

COMPLETE BOOTING FROM A NON-SCSI HARD

DISK DRIVE.

Refer to the drive manufacturer’s user manual.

THE COMPUTER LOCKS UP AND WILL NOT

COMPLETE BOOTING FROM A SCSI HARD DISK

DRIVE.

a

Is the SCSI BIOS seen during boot?

Note:

If the SCSI BIOS is seen during boot, a banner similar to the following appears:

Symbios Logic SDMS (TM) v4.0 PCI SCSI BIOS, PCI Rev. 2.0, 2.1.1

Copyright 1995 Symbios Logic

PCI-4.02.00

YES Go to b.

NO Power down all units in the system.

Remove all SCSI cables.

Boot system.

Is the SCSI BIOS seen during boot?

YES Power down all units in the system.

Reconnect and check all cable and power connections.

Boot system.

Go to a.

2-18 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

NO Power down all units in the system.

Reseat the host bus adapter.

Check CMOS setup.

Boot system.

Go to a.

b

Does the SCSI BIOS see the bootable SCSI drive?

Note:

When the computer boots, SDMS scans the SCSI bus. Devices found on the SCSI bus are identified as in the following lines:

HA ID LUN VENDOR PRODUCT REV

------------------------------------------------

0 2 0 SEAGATE ST31230N 0060

0 7 0 Symbios SYM53C815 0003

YES Go to c.

NO Power down all units in the system.

Make sure the hard drives have different

ID numbers (boot drive should have lowest ID).

Make sure both ends of the SCSI bus are terminated.

Check all cable and power connections.

Check CMOS setup.

Boot system.

Go to a.

c

If boot is still unsuccessful, go to the following item.

Symbios Logic PCI SDMS User’s Guide 2-19

Device Drivers for DOS/Windows

Installing Your SYMDISK.SYS Driver

THE DEVICE DRIVER DOES NOT RECOGNIZE

ONE OF THE NON-BOOT SCSI PERIPHERALS

(system may lock up).

a

Make sure the drivers were installed in the correct sequence.

b

Make sure the drivers’ CONFIG.SYS line has the correct path to the drivers.

c

Power down all units in the system.

d

Make sure the hard drives have different ID numbers (boot drive should have lowest ID).

e

Make sure both ends of the SCSI bus are terminated.

f

Check all cable and power connections.

g

Boot the system.

2-20 Symbios Logic PCI SDMS User’s Guide

Features

Description

Device Drivers for DOS/Windows

About Your SYMCD.SYS Driver

About Your SYMCD.SYS

Driver

2

2

Compatible with Microsoft's CD-ROM Extension

2.21 and above

Multi-session Photo CD support

Support for reading CCDA disks

2

SYMCD.SYS is needed whenever a CD-ROM device is connected on the SCSI bus. You must load it in conjunction with Microsoft's CD-ROM Extension 2.21 or above (MSCDEX.EXE). SYMCD.SYS communicates through ASPI8XX.SYS, so you must load ASPI8XX.SYS to use SYMCD.SYS.

Symbios Logic PCI SDMS User’s Guide 2-21

Device Drivers for DOS/Windows

Installing Your SYMCD.SYS Driver

Installing Your SYMCD.SYS

Driver

2

1

Use the COPY command to copy the appropriate driver(s) from the SDMS SCSI Drivers disk to your boot disk.

2

Add SYMCD.SYS to your CONFIG.SYS file. It goes in after ASPI8XX.SYS and SYMDISK.SYS (if this driver also is being used), in this order:

DEVICE=C:[PATH]ASPI8XX.SYS

DEVICE=C:[PATH]SYMDISK.SYS

DEVICE=C:[PATH]SYMCD.SYS /D:NAME

Note:

The /D: is not a drive letter designation; it indicates the name you wish assigned to your CD-ROM.

You must include the NAME, which can use any combination of up to 8 characters.

3

To insure that sufficient drive letters are available to identify all devices connected to the SCSI bus, add the MS-DOS LASTDRIVE command to the

CONFIG.SYS file:

LASTDRIVE=x with x specifying a drive letter in the range C through

Z. The letter assigned to LASTDRIVE represents the last valid drive MS-DOS is able to recognize and also represents the maximum number of drives available.

For example, LASTDRIVE=K allows access to eleven

(11) logical drives. For further details about

LASTDRIVE, consult your MS-DOS manual.

2-22 Symbios Logic PCI SDMS User’s Guide

Command Line

Options

Device Drivers for DOS/Windows

Installing Your SYMCD.SYS Driver

4

Unless your CD-ROM access software specifies otherwise, Microsoft's CD-ROM Extension

(MSCDEX.EXE) should execute from the

AUTOEXEC.BAT file in order to access your drive.

Add the following line to your AUTOEXEC.BAT file:

[PATH]MSCDEX /D:NAME

For example, if:

DEVICE=C:[PATH]SYMCD.SYS /D:MY_CD is in CONFIG.SYS, then:

[PATH]MSCDEX /D:MY_CD should exist in the AUTOEXEC.BAT file. The /D switches must match.

5

Check installation instructions for the CD-ROM drive itself for other parameters necessary to include with

MSCDEX.

6

When MSCDEX is loaded during the

AUTOEXEC.BAT file execution, a message is returned assigning a drive letter to the CD-ROM drive. For example:

DRIVE E = DRIVER MY_CD UNIT 0

This informs you that the CD-ROM drive is recognized and ready for use.

2

The SYMCD.SYS device driver has several embedded functions available, which are accessed via switches on the command line. An explanation of these options follows:

Symbios Logic PCI SDMS User’s Guide 2-23

Device Drivers for DOS/Windows

Installing Your SYMCD.SYS Driver

IMPORTANT No spaces are allowed in specifying these command line options. Spaces are required between different command line options.

Using the /ASK Option

This option prompts the user at initialization time whether to load SYMCD.SYS or not. For example, the line in CONFIG.SYS that loads SYMCD.SYS would look like this:

2

DEVICE=C:[PATH]SYMCD.SYS /D:MY_CD /ASK

Using the /UPTOLUN= Option

This option is used to change the default for multiple

LUNs per Target ID on the SCSI bus. The current default is to scan all LUNs. CD-ROM changers that use multiple LUNs work by default. To turn off scanning all

LUNs on a SCSI bus, choose /UPTOLUN=0. This saves some time during boot.

2

DEVICE=C:[PATH]SYMCD.SYS /D:MY_CD /UPTOLUN=x where ‘x’ is in the range of 0 to 7. It uses LUN 0 through

LUN x to assign a separate drive letter for each of the x+1

CDs in the CD magazine. The SYMCD.SYS driver defaults to supporting LUN 0 only.

Using the /NOBCD Option

This Option is used to support the Trantor Music Box

CD audio application. Using this option prevents the track numbers from being converted to BCD (Binary

Coded Decimal). If this option is used with CD audio applications such as Adaptec's cdplayer, Corel's cd-audio, or Future Domain's cdaudio, track numbers >16 are not reported correctly because these applications require binary track numbers. For example, the line in

2

2-24 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your SYMCD.SYS Driver

CONFIG.SYS that loads SYMCD.SYS would look like this:

DEVICE=C:[PATH]SYMCD.SYS /NOBCD

Troubleshooting

2

THE CD-ROM DRIVE IS NOT SEEN AT BOOT

TIME, OR THE SYSTEM LOCKS UP.

a

Make sure the required drivers are installed and in the correct sequence.

b

Make sure the driver’s CONFIG.SYS line has the correct path to the driver.

c

Make sure MSCDEX, in the AUTOEXEC.BAT, has the same drive name as the CDROM driver in the CONFIG.SYS file.

d

Make sure there is no ID or drive letter designation conflict.

e

Power down all units in the system.

f

Check the cable and power connections.

g

Make sure the SCSI bus is properly terminated.

h

Make sure sufficient drive letters are specified

(through the MS-DOS lastdrive= command) to include your CD-ROM. A CD-ROM that uses multiple disks requires a letter for each disk.

Symbios Logic PCI SDMS User’s Guide 2-25

Device Drivers for DOS/Windows

About Your WIN8XX.386 Driver

About Your WIN8XX.386

Driver

2

Features

Description

2

Supports Windows Advanced SCSI Programming

Interface (ASPI) applications

Supports 32-bit Disk Access in Windows 3.1 and

Windows for Workgroups 3.11 via the FastDisk interface

Processes all I/O requests, including ASPI requests, using 32-bit protected-mode code for the highest possible performance

2

WIN8XX.386 is both a Windows FastDisk driver and an

ASPI Manager for Windows which provides an interface to popular ASPI applications. It is required when you want to use 32-bit Disk Access in Windows. Even though

WIN8XX.386 controls all SCSI drives on your Symbios

Logic host adapter, Windows allows 32-bit Disk Access on the first two drives only.

2-26 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

Installing Your WIN8XX.386

Driver

2

1

Use the COPY command to copy the WIN8XX.386 driver from the SDMS SCSI Drivers disk to your boot disk. For example, to copy the driver to your system's

Windows SYSTEM directory, use the command shown below: copy a:\WIN8XX.386 c:\WINDOWS\SYSTEM

2

Add an entry in the [386Enh] section of your

Windows SYSTEM.INI file, as shown below: device=WIN8XX.386

In the example shown above, the driver is in the

Windows SYSTEM directory. If you choose to place the driver in another location, simply specify the complete path along with the filename shown in the example.

3

Add an entry in the [386Enh] section of your

Windows SYSTEM.INI file, as shown below: device=*int13

This entry may or may not already exist in your

SYSTEM.INI file, depending on the hardware present when you installed Windows. Check to make sure that it appears only once in your SYSTEM.INI file.

Symbios Logic PCI SDMS User’s Guide 2-27

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

4

Add an entry in the [386Enh] section of your

Windows SYSTEM.INI file, as shown below:

32BitDiskAccess=off

This entry may or may not already exist in your

SYSTEM.INI file, depending on the hardware present when you installed Windows. Check to make sure that it appears only once in your SYSTEM.INI file.

5

Remove an entry from the [386Enh] section of your

Windows SYSTEM.INI file, either by removing the line completely, or by placing a semicolon in column one of the line so it is treated as a comment, as shown below:

;device=*wdctrl

This entry may or may not already exist in your

SYSTEM.INI file, depending on the hardware present when you installed Windows. This entry controls the loading of the standard FastDisk driver that ships with Windows for the purpose of providing

32-bit Disk Access to an IDE drive. This driver is not compatible with vendor-supplied FastDisk drivers, such as WIN8XX.386.

6

Use the COPY command to copy the WIN8XX.DLL driver from the SDMS SCSI Drivers disk to your boot disk. For example, to copy the driver to your system's

Windows SYSTEM directory, use the command shown below: copy a:\WIN8XX.DLL c:\WINDOWS\SYSTEM\WINASPI.DLL

NOTE:

In the above statement the file name is changed. This is important.

2-28 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

7

Add profile switches to your SYSTEM.INI file, as necessary. See below for a detailed description.

Command Line

Options

2

Profile settings are the Windows equivalent of DOS command line options. They are entered into a particular section of your SYSTEM.INI file which resides in your

Windows directory. Edit SYSTEM.INI and add a section anywhere (except in the middle of another section like

[386Enh]) called [Win8xx]. For example, the section might look like this:

[Win8xx]

Synchronous=on

Wide=off

Disconnect=on

SCAM=off

ParityChecking=on

Timeout=0<>

Verbose=OFF

In the following descriptions, 'ha_num' refers to the adapter number (boot order designation). Please note that this version of the driver only supports one adapter, so the host adapter number is always zero. In the following descriptions 'id' refers to the SCSI device ID.

These conventions are also used:

[ ] items in brackets are optional

* means repeat 0 or more times

IMPORTANT: No spaces are allowed in specifying any of these options. Spaces are required between different options.

Using the SYNCHRONOUS Option

Synchronous=ON or OFF (Default = ON)

2

Symbios Logic PCI SDMS User’s Guide 2-29

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

This option allows you to turn off SCSI synchronous transfers. By default they are on, which is faster. However, if you are having problems with your system you might want to try turning synchronous off.

Using the WIDE Option

Wide=ON or OFF (Default = ON)

This option allows you to turn off SCSI wide transfers. By default they are on, which is faster if you have a wide disk drive. However, if you are having problems with your system you might want to try turning wide off.

2

Using the DISCONNECT Option

Disconnect=ON or OFF (Default = ON)

This option allows you to turn off SCSI disconnects. By default they are on, which is sometimes faster. However, if you are having problems with your system you might want to try turning disconnects off.

2

Using the SCAM Option

SCAM=ON or OFF (Default = ON)

This option allows you to turn off SCAM (SCSI

Configured Auto-Matically). By default SCAM is on. If you have a SCAM capable SCSI peripheral, SCAM automatically assigns SCSI device ID's to avoid conflicts.

If you are having problems with your system you might want to try turning SCAM off.

2

Using the PARITYCHECKING Option

ParityChecking=ON or OFF (Default = ON)

This option allows you to turn off SCSI parity checking.

By default it is on. Parity is a mandatory part of SCSI-2,

2

2-30 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

however some old peripherals may not support parity. If you are having problems with your system you might want to try turning parity checking off. Typically this is necessary only if you add a new peripheral that doesn't support parity. CD-ROM drives sometimes do not support parity.

Using the VERBOSE Option

Verbose=ON or OFF (Default = OFF)

This option allows you to turn on verbose mode for the driver. This displays a message with the version of the driver each time the driver is loaded. This is a good way to make sure the driver is loaded. Typically you want to set this ON once, then turn it off until you need it again so the message is not displayed each time the driver loads.

2

Using the FASTDISK Option

Fastdisk=ON or OFF (Default = ON)

This option allows you to turn off the FASTDISK portion of this driver. The FASTDISK portion allows 32-

Bit Disk Access on a SCSI drive at C: or D:. Since

Windows only allows 32-Bit Disk Access on one kind of drive at a time, you may want to disable it for your SCSI drive so you can use it on an IDE drive you have in your system. This allows the ASPI portion of the driver to continue to function, while the FASTDISK (32-Bit Disk

Access) portion is disabled.

2

Using the TIMEOUT Option

Timeout=n (Default = 0, which disables time-outs)

2

Option Syntax:

Timeout=n<ha_num[:id]>[,n<ha_num[:id]>]* (n = time-out value in seconds for device, n=(0..65535), 0=infinite)

Symbios Logic PCI SDMS User’s Guide 2-31

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

WIN8XX.386 uses a time-out mechanism to detect certain errors. When WIN8XX.386 issues a command to a SCSI device, a timer is started. If the timer expires before the command completes, WIN8XX.386 assumes that something has gone wrong with the device, and takes steps to recover. The default value for this is zero, which means time-outs are disabled by default. It is recommended that you use time-out values of at least 10 minutes (600 seconds) for SCSI tape devices, since they have many commands which take much longer to complete. The SYMDISK.SYS and SYMCD.SYS drivers use time-outs of their own (typically 10 to 30 seconds). A time-out value of up to 65535 seconds (over 18.2 hours) is possible.

For example, if you have a particularly slow device on your host adapter (ha_num=0) at id=3, and you wish to extend the time-out on this device to 60 seconds, the line in SYSTEM.INI should look like this:

[Win8xx] Timeout=60<0:3>

As another example, suppose you have a tape drive on your host adapter (ha_num=0) at id=3, and you wish to set the time-out on this device to 600 seconds. Suppose you also have a scanner on your host adapter (ha_num=0) at id=2, and you wish to set the time-out on this device to

30 minutes (1800 seconds). The line in SYSTEM.INI should look like this:

Timeout=1800<0:2>,60<0:3>

Troubleshooting

2

SYSTEM LOCKS UP AT BOOT TIME.

a

Make sure no other ASPI manager is loaded.

2-32 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver b

Check for correct loading sequence in the

CONFIG.SYS file.

c

Boot the system.

WINDOWS DISPLAYS THE FOLLOWING

MESSAGE WHILE BOOTING:

The Microsoft Windows 32-bit disk driver (WDCTRL) cannot be loaded. There is unrecognizable disk software installed on this computer.

a

Make sure the line controlling WDCTRL in your

SYSTEM.INI is either removed or commented out, as explained in the driver installation instructions.

b

Re-boot the system.

THE DRIVER DOES NOT RECOGNIZE ONE OF

THE NON-BOOT SCSI PERIPHERALS (system may lock up)

a

Make sure the driver is installed properly according to the driver installation instructions.

b

Power down all devices in the system.

c

Make sure all SCSI devices have unique ID numbers.

d

Make sure the SCSI bus is properly terminated.

e

Check all cable and power connections.

f

Boot the system.

A MESSAGE SAYING ASPI8XX.SYS IS NOT

LOADED IS DISPLAYED

Load ASPI8XX.SYS in your CONFIG.SYS.

THE FOLLOWING MESSAGE IS DISPLAYED

WHEN YOU TRY TO ENTER THE VIRTUAL

MEMORY SETTINGS IN THE 386 ENHANCED

SECTION OF THE CONTROL PANEL

Symbios Logic PCI SDMS User’s Guide 2-33

Device Drivers for DOS/Windows

Installing Your WIN8XX.386 Driver

32-bit File Access was unable to run. This may be because you started the network before starting Windows, because Windows could not find the IFSHLP.SYS driver, or your hard disk(s) may be incompatible with 32-bit File

Access.

Make sure IFSHLP.SYS is being loaded in your

CONFIG.SYS. It should appear there when Windows

For Workgroups 3.11 is installed, but sometimes it does not.

A WINDOWS ASPI APPLICATION SUCH AS

COLORADO BACKUP FOR WINDOWS SAYS IT

CAN'T FIND AN ASPI MANAGER

Colorado Backup for Windows, and possibly other programs, leave a copy of WINASPI.DLL for another vendor's host adapter in the directory in which it is installed. When WINASPI.DLL is looked for, it is found in that directory before looking in your

Windows system directory. To fix the problem, delete or rename WINASPI.DLL in the Colorado Backup

For Windows directory.

WIN8XX.386 DISPLAYS THE FOLLOWING

MESSAGE WHILE LOADING

Win8xx VxD Initialization Error:

FastDisk registration failed for drive

80h (C:) (or 81h (D:)).

Please check the settings in your SYSTEM.INI file.

In this case, check the [386Enh] section of your

SYSTEM.INI file to make sure you have the line: device=*int13.

2-34 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Important Additional Information For Windows Users

Important Additional

Information For Windows

Users

2

Enabling 32-bit Disk and File Access in

Windows

2

Only Windows for Workgroups 3.11 offers both 32-bit

Disk and File access. To enable these features, make sure your system is backed up, then do the following:

1

Select the Control Panel applet in the Main program group.

2

Select the 386 Enhanced icon.

3

Select the Virtual Memory settings.

4

Select the Change button.

5

Check the two boxes at the bottom of the screen to enable 32-Bit Disk Access and 32-Bit File Access.

Make sure the swapfile is set to permanent.

6

Click OK.

7

Click Restart Computer.

Restrictions

2

This version of the driver has the following restrictions:

This version only supports one host adapter.

The NVRAM settings in the Configuration Utility for the SDMS 4.0 BIOS are not yet supported by this driver.

Symbios Logic PCI SDMS User’s Guide 2-35

Device Drivers for DOS/Windows

Important Additional Information For DOS Users

Important Additional

Information For DOS Users

2

Assignment of Drive

Letters

2

The MS-DOS operating system assigns drive letters to primary partitions first. After the primary partitions have been assigned drive letters the logical partitions are assigned drive letters. Do not assume that the drive letter designations will follow consecutively from device to device within a PC system.

An Example:

A PC system is configured with an IDE hard disk as the boot drive, a SCSI hard disk, and a CD-ROM drive. The

IDE drive has three partitions: one primary and two logical. The SCSI hard disk has two partitions: one primary and one logical. The SCSI hard disk is assigned

ID one, and the CD-ROM is ID four. The distribution of the drive letters is:

A: 3 1/2” floppy drive

B: 5 1/4” floppy drive

C: IDE primary partition

D: SCSI primary partition

E: IDE first logical partition

F: IDE second logical partition

G: SCSI logical partition

H: CD-ROM

2

2-36 Symbios Logic PCI SDMS User’s Guide

Features

Description

Device Drivers for DOS/Windows

Using the SCSI Low-level Format Utility

Using the SCSI Low-level

Format Utility

2

2

Works with any ASPI host adapter

Provides a graphical user interface (GUI)

Supports multiple adapter/drive selection

Supports multiple LUNs

Supports Wide SCSI

Provides automatic error retry

Provides on-screen display of time elapsed

2

This utility allows you to low-level format SCSI hard disk drives connected to Symbios Logic PCI to SCSI host adapters. It provides a friendly graphical user interface

(GUI), and help is available for any decision screen by pressing F1 or selecting Help in the window.

Three files, located on your Symbios Logic SDMS drivers diskette, are required to run this utility. They are labeled

ASPIFMT.EXE, ASPIINF.DAT, and ASPI8XX.SYS

(you may use another ASPI manager). It is recommended that you place these files on a DOS bootable diskette, and run the executable file from this diskette rather than from a hard disk drive. This minimizes the possibility of interfering with your system.

Because a hard drive remains unusable after a low-level format until you execute the DOS FDISK and FORMAT command procedures, the CONFIG.SYS file on this bootable diskette must also contain the DOS files

Symbios Logic PCI SDMS User’s Guide 2-37

Device Drivers for DOS/Windows

Using the SCSI Low-level Format Utility

FDISK.EXE and FORMAT.COM. If you are formatting magneto optical or other removable media drives you also need the SYMDISK.SYS driver from your Symbios Logic

SDMS drivers diskette in the CONFIG.SYS file.

The recommended minimum memory requirement for this utility is 2 MB. You need at least 500 KB of conventional DOS memory, and the remainder in extended memory.

When you run the format utility, it scans the SCSI bus for all hard disk and removable media drives. Then it generates a display showing the devices found. You may select devices from this display for the utility to format.

It can take from several minutes to several hours, depending on the size of the drive, to complete the format. If the format procedure is aborted for any reason, the drive remains unusable until an entire format cycle is completed.

WARNING: Use extreme caution when selecting a drive for formatting. The format process completely removes all information on a drive.

Troubleshooting

2

FORMAT DOES NOT COMPLETE AND SYSTEM

IS FROZEN

a

Check to see if the drive still has power.

b

The only way to terminate the program is to reboot. If the format did not complete, the drive remains unusable until a low-level format is completed.

2-38 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Using the SCSI Low-level Format Utility

AN UNKNOWN STATUS CODE IS RECEIVED FOR

A MAGNETO OPTICAL DRIVE

Check to see if the media is present.

THE UTILITY SCREENS ARE UNREADABLE

Check that your graphics card and your monitor match. For example, an SVGA card, and a VGA monitor may not deliver the screens.

Symbios Logic PCI SDMS User’s Guide 2-39

Device Drivers for DOS/Windows

Using the SCSI SYM53C8XX CONFIG Utility

Using the SCSI SYM53C8XX

CONFIG Utility

2

Features

Description

2

Configures all DOS drivers and the Windows 3.1 driver

Works for all Symbios logic SYM53C8xx PCI host adapters

Provides a SCSI bus view showing all 8xx cards and attached peripherals

Provides a graphical user interface (GUI)

Provides online Help

2

This utility provides a user friendly way to configure any of the DOS based drivers for your CONFIG.SYS and

SYSTEM.INI. It assumes the drivers are already installed. The ASPI8XX.SYS driver must be present and loaded for this utility to run. For the Windows Configure option, the WIN8XX.386 driver must be present in the

SYSTEM.INI file. Online help is available at each step for each screen you encounter. You may press F1 at any time for a list of all the help available.

Several files are required to run this utility. They are

CONFIG.EXE, CONFIG.DAT, 8BITBUS.PCX,

16BITBUS.PCX, ADAPTERS.PCX, LUNVIEW.PCX,

TILE.PCX, VIEWIT.PCX, and ASPI8XX.SYS. If

ASPI8XX.SYS already exists on your system and is pointed to by the driver line in your CONFIG.SYS, you do not need it in the CONFIG.EXE directory. It is included here in case an install of the drivers has not yet

2-40 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Using the SCSI SYM53C8XX CONFIG Utility

taken place. If this is the case, add the line

DEVICE=[path]ASPI8XX.SYS to the CONFIG.SYS

(reboot for it to take effect). The path specified in the above line is your choice (C:\SYMBIOS is recommended) and ASPI8XX.SYS must be copied to that [path] location.

If you wish to configure the SYMDISK.SYS or

SYMCD.SYS DOS drivers, they also require installation prior to running the Configuration utility. To do a full installation of all the DOS drivers, run the SYM53C8XX install utility.

The recommended minimum memory requirement for this utility is 2 MB. You need at least 500 KB of conventional DOS memory, and the remainder in extended memory.

Troubleshooting

2

THE UTILITY SCREENS ARE UNREADABLE

Check that your graphics card and your monitor match. For example, an SVGA card, and a VGA monitor may not deliver the screens.

Symbios Logic PCI SDMS User’s Guide 2-41

Device Drivers for DOS/Windows

Using the SCSI SYM53C8XX VERIFY Utility

Using the SCSI SYM53C8XX

VERIFY Utility

2

Features

Description

2

Provides a system check for our SDMS 3.0 and 4.0 software

Detects any vendor's adapters and ASPI managers

Shows detailed device information found on these adapters

Provides a graphical user interface (GUI)

Provides online Help

2

This utility troubleshoots your system by systematically testing and checking various hardware and software components. No changes or side effects occur to your system as a result of running this utility. There is a help button on the first screen that explains in detail exactly what tests and checks are performed on your system. A majority of the information received by this utility is via

ASPI commands. Therefore, this utility is most helpful if an ASPI manager is loaded at the time it is run. Although some limited information can be found without one, an error is reported if it does not find an ASPI manager.

Note that any vendor's ASPI manager suffices.

The following files are required to run this utility,

SYMDIAG.EXE and Z_VER.DAT. Also, ASPI8XX.SYS is included with these files in the event it is not already installed in your CONFIG.SYS file. If ASPI8XX.SYS already exists on your system and is pointed to by the driver line in your CONFIG.SYS, you do not need it in

2-42 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Using the SCSI SYM53C8XX VERIFY Utility

the SYMDIAG.EXE directory. It is included here in case an install of the drivers has not yet taken place. If this is the case, the line DEVICE=[path]ASPI8XX.SYS must be added to the CONFIG.SYS (reboot for it to take effect). The path specified in the above line is your choice

(C:\SYMBIOS is recommended) and ASPI8XX.SYS must be copied to that [path] location.

The recommended minimum memory requirement for this utility is 2 MB. You need at least 500 KB of conventional DOS memory, and the remainder in extended memory.

Troubleshooting

2

THE UTILITY SCREENS ARE UNREADABLE

Check that your graphics card and your monitor match. For example, an SVGA card, and a VGA monitor may not deliver the screens.

Symbios Logic PCI SDMS User’s Guide 2-43

Device Drivers for DOS/Windows

Using the Host Adapter Flash Utility

Using the Host Adapter Flash

Utility

2

Features

Description

2

Supports host adapter selection for updating with a specific BIOS image

Supports 64K flash parts

2

This utility allows you to update the Symbios Logic PCI

SCSI BIOS on a host adapter based on a SYM53C815,

SYM53C825, or SYM53C875 controller. New versions of the PCI SCSI BIOS are released periodically. Your host adapter must have a flash EEPROM onboard to use this utility.

The utility is labeled FLASH8X5.EXE, and is located on your Symbios Logic SDMS drivers diskette. It is recommended that you place this utility on a DOS bootable diskette, and execute it from this diskette rather than from a hard disk drive. Power down any hard disk drives attached to the host adapter you are updating.

Using DOS 5.0 or higher, create a bootable diskette by formatting it with the /s option (e.g., format a: /s). Do not install any memory managers or SCSI drivers on the diskette. A minimum of 200K of conventional memory is needed to execute the flash utility. Add the DOS mouse driver to AUTOEXEC.BAT for mouse control of the utility.

Insert the diskette into drive A:. Boot the system to the

DOS prompt A:\>. Type FLASH8X5 and press enter.

2-44 Symbios Logic PCI SDMS User’s Guide

Device Drivers for DOS/Windows

Using the Host Adapter Flash Utility

The first screen displayed indicates what files are necessary to upgrade and general instructions to upgrade.

Press Enter to continue to the next window.

This window is the main menu for the Flash Utility and contains these seven choices:

1

Update the EEPROM.

2

Backup the current BIOS image.

3

View board summary.

4

Change SCSI ID.

5

Exit to DOS.

6

Reboot.

7

About Flash8x5.

We recommend you do a view (option 3) and a backup

(option 2) prior to updating the EEPROM. The view identifies the SCSI controller, its Device ID, the Flash

Chip and current BIOS version. The backup, backs up the old BIOS image to the diskette. Incase there are problems with the new image, you can get back to the original one.

Now you are ready to update the current SCSI BIOS

(option 1). Choosing option 1 gives you a summary of installed boards to choose from. You must mark at least one by pressing the space bar, even if there is only one to choose from. This takes you to a new window where the

BIOS file name is provided. After marking the board and pressing Enter, a new window comes up asking for the file name of the BIOS to upgrade. At this time you can press

Symbios Logic PCI SDMS User’s Guide 2-45

Device Drivers for DOS/Windows

Using the Host Adapter Flash Utility

F2 to view the available files on the diskette. The available files should be, the BIOS file just backed up, and

8XX_32.ROM. In the F2 case, highlight the file

8XX_32.ROM for the Symbios Logic and NCR Host

Adapter controllers and press Enter. Or type the filename in manually at the a:\ prompt and press Enter.

Next, the utility displays the file name and notifies you when the file is successfully read. Press Enter to continue and the system prompts you whether or not to overwrite the BIOS that is currently flashed in. Select “Y” to upgrade. This causes the EEPROM to get erased and updated. The system then displays the card information and verifies that the new BIOS is installed. Press any key to get back to the main menu. Choose option 6 to

Reboot. Remove the floppy if you want to boot off your hard drive.

To verify the new BIOS installation, watch carefully during boot and look at the 3rd line of the SDMS banner

(which should read PCI-4.03.00) when displayed. Or rerun the flash utility from the floppy and choose the view option to see the current BIOS version.

Host adapters supported:

SYM8150SP

SYM8250ASP

SYM8251ASP

SYM8251AD

SYM8750SP

SYM8751SP

NCR8150S

NCR8250S

NCR8251S

NCR8251D

SYM8751D

(Previous versions of the host adapters use the format

NCR8150S, NCR8250S, ...)

2-46 Symbios Logic PCI SDMS User’s Guide

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for Windows 95

Chapter 3

Device Drivers for Windows 95

Introduction for Windows 95

Features

Description

3-1

3-1

3-2

Installing Your SYMC8XX.MPD Driver

Preparing a Symbios Driver Diskette

New System Installation

3-3

3-3

3-3

Existing System Installation

Existing System Using ASPI8XX.SYS DOS ASPI

Driver

Verifying Correct Driver Installation

Command Line Options

Troubleshooting

3-5

3-6

3-8

3-9

3-10

Important Additional Information 3-12

Enabling/Disabling Ultra SCSI (Fast 20) Support 3-12

Multiple Symbios Logic Host Adapter

Considerations

Method 1

Method 2

3-13

3-13

3-14

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for Windows 95

Symbios Logic PCI SDMS User’s Guide

Features

Device Drivers for Windows 95

3

Introduction for Windows 95

Introduction for Windows 95

3

Windows 95 is an operating system designed to run on

Intel processors using current technology. It provides a graphical user interface environment incorporating many high-level features (refer to the Microsoft Windows 95 documentation for details). I/O requests in Windows 95 are handled by an I/O manager. To address a SCSI peripheral, the I/O manager goes through the appropriate drivers. Class drivers for hard disk, floptical, CD-ROM, printer, and scanner peripherals are provided in Windows

95. Other class drivers, provided by peripheral manufacturers, are added to support new devices.

Symbios Logic / Microsoft provide a miniport driver, called SYMC8XX.MPD, to complete the path to a

Symbios Logic controller or processor with an optional

SDMS SCSI BIOS. The following sections describe this driver and its installation.

3

Synchronous negotiation (including Fast/Ultra SCSI)

Wide negotiation

Auto Request Sense

Supports multiple host adapters

Supports multiple Logical Unit Numbers (LUNs)

Disconnect/Reselect

Scatter-Gather

Differential Support

Supports SCSI pass-through functionality

BUS device reset

Symbios Logic PCI SDMS User’s Guide

3 -1

Device Drivers for Windows 95

Introduction for Windows 95

Description

Scan order change (scans the bus from SCSI ID 0 to

MAX SCSI ID [7 or 15])

Ultra SCSI (Fast 20) Support (20 MB/s narrow, 40

MB/s wide)

SCAM Support (SCSI Configured AutoMatically)

3

SYMC8XX.MPD is designed to Microsoft's specification for miniport drivers. This driver allows connection of

SCSI devices including disk drives, CD-ROMs, and tape drives for PCI-based machines. To support a new SCSI device the Windows 95 architecture requires that a class driver for that type device is present (usually supplied by

Microsoft, or possibly by the peripheral manufacturer).

No changes to SYMC8XX.MPD are required. This driver is only supported under Windows 95.

SCSI commands are passed directly from a Windows application to the SCSI devices by using the SCSI passthrough facility (refer to the Microsoft Windows 95 documentation for details). This facility allows applications to directly control and access SCSI devices by filling in a data structure and calling in to the port driver.

The SYMC8XX.MPD driver supports Ultra SCSI protocol, providing twice the raw data transfer rate of Fast

SCSI for disk drives and Symbios Logic host adapters that support Ultra SCSI. However, Ultra SCSI requires more stringent SCSI bus cabling setups than Fast SCSI.

3-2 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

Installing Your

SYMC8XX.MPD Driver

3

Preparing a Symbios

Driver Diskette

3

Copy the following files (supplied to you on diskette) to the root directory of a clean floppy diskette, and use this

Symbios Driver diskette during installation.

SYMC8XX.MPD

SYMC8XX.INF

New System

Installation

3

This procedure installs the SYMC8XX.MPD driver onto a Windows 95 system. Use this procedure when initially upgrading to Windows 95. Windows 95 automatically adds the driver to the registry and copies the driver to the appropriate directories.

NOTE:

Some Symbios Logic PCI SCSI host adapters are supported by a driver bundled in Windows 95. For these adapters, the bundled driver is automatically installed during Windows 95 Setup. To change to the

SYMC8XX.MPD driver, follow the instructions for

Existing System Installation after Windows 95 installation is completed.

1

Initiate Windows 95 Setup according to the Microsoft instructions.

2

Setup enters the hardware detection phase after a system reboot. (“Setting up Hardware” message box is displayed.) If the message “NCR PCI SCSI Host

Adapter” is displayed, then the host adapter is supported by the bundled driver, and it is installed automatically. After Windows 95 installation

Symbios Logic PCI SDMS User’s Guide 3-3

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

completes, you can install the SYMC8XX.MPD driver according to the “Existing System Installation” instructions.

3

If the host adapter is not supported by the bundled driver, Setup displays a New Hardware Found - PCI

SCSI Bus Controller dialog box. Select “Driver from disk provided by hardware manufacturer” and click

OK.

NOTE:

If ASPI8XX.SYS (the Symbios Logic

SDMS 4.0 DOS ASPI driver) is loaded when beginning the Windows 95 installation, no messages about PCI SCSI Bus Controllers is displayed. The installation completes, but real-mode disk drivers are used. See Verifying Correct Driver Installation below.

To install the SYMC8XX.MPD driver (which disables loading of the ASPI8XX.SYS driver under

Windows 95), see Existing System Using

ASPI8XX.SYS DOS ASPI Driver below.

4

Insert the Symbios Driver diskette into drive A: (or

B:) and click OK. If using drive B:, you must select it from the pick list.

5

Windows 95 automatically copies the appropriate driver files and rebuilds its driver database.

6

A “System Settings Change” dialog box is displayed.

Remove the flex disk from the drive and click Yes to restart the computer.

At this point, Windows 95 Setup completes and the new driver is operational. To verify this, see the section

“Verifying Correct Driver Installation.”

3-4 Symbios Logic PCI SDMS User’s Guide

Existing System

Installation

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

Note:

At driver installation, the Symbios Logic PCI

(53C8XX) Miniport driver defaults to Ultra SCSI support turned OFF. To enable Ultra SCSI support, see

Enabling/Disabling Ultra SCSI Support below.

3

This procedure installs the SYMC8XX.MPD driver onto an existing Windows 95 system.

1

Boot Windows 95.

2

Click Start. Move to Settings, Control Panel, and click.

3

Double-click on the System icon.

4

Click on the Device Manager tab.

NOTE:

If the SCSI controllers entry, or the PCI

NCR C8xx SCSI Host Adapter entry do not exist, the system is probably using the ASPI8XX.SYS DOS

ASPI driver. See the section Existing System Using

ASPI8XX.SYS DOS ASPI Driver below.

5

Either double-click on the SCSI controllers entry, or click once on the plus sign to the left of it.

6

Select the PCI NCR C8xx SCSI Host Adapter entry.

Click the Properties button.

7

Click the Driver button. The version of the currently active driver should display in the File details section.

8

Click the Change Driver... button.

Symbios Logic PCI SDMS User’s Guide 3-5

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

9

Even though you may have previously installed the

SYMC8XX.MPD driver, click the Have Disk... button to install a newer version.

10 Insert the Symbios Driver diskette in drive A: (or B:) and click OK. If using drive B:, you must select it from the pick list.

11 The Select Device dialog box should display

“Symbios Logic 8xxxx PCI SCSI Host Adapter”, where 8xxxx matches the installed adapter. Click OK.

12 The Driver tab is updated to display the new driver files. To install these driver files, click OK. (Do NOT click the Change Driver... button.) The driver files are copied and a new driver database is built.

13 A “System Settings Change” dialog box is displayed.

Remove the flex disk from the drive and click Yes to restart the computer.

At this point, the new driver is operational. To verify this, see the section “Verifying Correct Driver Installation”

NOTE:

At driver installation, the Symbios Logic PCI

(53C8XX) Miniport driver defaults to Ultra SCSI support turned OFF. To enable Ultra SCSI support, see

Enabling/Disabling Ultra SCSI Support below.

Existing System Using

ASPI8XX.SYS DOS

ASPI Driver

3

This procedure installs the SYMC8XX.MPD driver onto an existing Windows 95 system which is using the

ASPI8XX.SYS DOS ASPI driver. You can check this by using the Verifying Correct Driver Installation instructions below.

1

Boot Windows 95.

3-6 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

2

Click Start. Move to Settings, Control Panel, and click.

3

Double-click on the System icon.

4

Click on the Device Manager tab.

5

Either double-click on the Other entry, or click once on the plus sign to the left of it.

6

Select the PCI SCSI Bus Controller entry. Click the

Properties button.

7

Click the Driver button. A message should state that no drivers are installed for this device.

8

Click the Change Driver... button.

9

In the Select Hardware Type dialog box, select SCSI

Controllers.

10 In the Select Device dialog box, click the Have Disk button.

11 Insert the Symbios Driver diskette in drive A: (or B:) and click OK. If using drive B:, you must select it from the pick list.

12 The Select Device dialog box should display

“Symbios Logic 8xxxx PCI SCSI Host Adapter”, where 8xxxx matches the installed adapter. Click OK.

Symbios Logic PCI SDMS User’s Guide 3-7

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

13 The Driver tab is updated to display the new driver files. To install these driver files, click OK. (Do NOT click the Change Driver... button.) The driver files are copied and a new driver database is built.

14 A “System Settings Change” dialog box is displayed.

Ignore the message saying to turn off your computer and change hardware settings. Remove the flex disk from the drive and click Yes to shut down the computer. Press Ctrl-Alt-Delete or the system reset button to restart the system.

At this point, the new driver is operational. To verify this, see the section “Verifying Correct Driver Installation”

NOTE:

At driver installation, the Symbios Logic PCI

(53C8XX) Miniport driver defaults to Ultra SCSI support turned OFF. To enable Ultra SCSI support, see

Enabling/Disabling Ultra SCSI Support below.

Verifying Correct

Driver Installation

3

After installing/updating with the SYMC8XX.MPD driver, you should verify proper operation of the driver.

1

Check that all devices on the SCSI bus are available via My Computer. Double-click on the My Computer icon. Check that all logical SCSI hard drives and CD-

ROM drives are shown.

2

Click the Start button, move to Settings, Control

Panel, and click. Double-click on the System icon.

Click the Device Manager tab. Check that no host adapter is displayed with a yellow or red symbol under the SCSI controllers entry. If there is, continue with the steps below to help determine the problem.

3-8 Symbios Logic PCI SDMS User’s Guide

Command Line

Options

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

3

Either double-click on the SCSI controllers entry, or click once on the plus sign to the left of it. One entry for each host adapter installed in the system is displayed. Select an entry, then click the Properties button. The Device Status message should read “This device is working properly.” If any other messages appear, continue with the steps below to get more information on the problem.

4

Click the Driver tab. Two entries should appear, one for SYMC8XX.INF and one for SYMC8XX.MPD.

The INF file does not contain embedded version information, so the File Details are all Not Available.

Select the SYMC8XX.MPD file. The file version of the driver is displayed.

5

Click Cancel to leave the Host Adapter Properties dialog box. Click on the Performance tab. A list of performance attributes is displayed. Below the list, you should see the message “Your system is configured for optimal performance.” If any other messages appear, select each message and click the

Details button. This provides more information on why the system is not performing optimally and methods to correct the problem.

If no problems are encountered in the above steps, the new driver is operating properly. Otherwise, consult the section on Troubleshooting for additional information.

3

There are no command line options with the Windows 95 device driver.

Symbios Logic PCI SDMS User’s Guide 3-9

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver

Troubleshooting

3

DURING INSTALLATION, NO SCSI DEVICES ARE

FOUND.

a

Insure that all devices are powered on and terminated correctly.

b

Check that no devices have duplicate SCSI IDs.

c

Make sure INT A is assigned for the PCI slot(s) where your SCSI host adapter(s) are installed.

SYSTEM CRASHES DURING INSTALLATION

WITH A MESSAGE INDICATING INACCESSIBLE

BOOT DEVICE.

This error is usually associated with an IRQ, DMA channel, I/O (chip) address, or BIOS address conflict.

Set the SCSI host bus adapter board to use a different interrupt.

PROBLEMS WITH ULTRA SCSI DEVICES USING

ULTRA SCSI PROTOCOL

a

If the system is configured with a Symbios Logic host adapter that supports Ultra SCSI, an Ultra SCSI device is on the SCSI bus, and Ultra SCSI support by the SYMC8XX.MPD driver is enabled, intermittent problems and possible system crashes can occur if the

SCSI bus cable and terminators do not conform to the Ultra SCSI specification.

b

If the system is bootable, disable Ultra SCSI support using the procedure described above.

c

If the system is not bootable to Windows 95, hold down F8 when Starting Windows 95... is displayed.

At the menu, select Safe Mode. Once the system is booted, disable Ultra SCSI support using the procedure described below.

3-10 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows 95

Installing Your SYMC8XX.MPD Driver d

If the system operates properly without Ultra SCSI enabled, it is highly likely that the SCSI bus cable and terminators are not configured correctly for Ultra

SCSI. See the Symbios Logic host adapter hardware manual for information on Ultra SCSI cabling requirements.

Symbios Logic PCI SDMS User’s Guide 3-11

Device Drivers for Windows 95

Important Additional Information

Important Additional

Information

Enabling/Disabling

Ultra SCSI (Fast 20)

Support

3

Once the SYMC8XX.MPD driver is installed, support for Ultra SCSI (Fast 20) is enabled or disabled using the

Device Manager. Ultra SCSI is enabled/disabled on a per adapter basis.

Use the following procedure for enabling/disabling Ultra

SCSI Support:

1

Click the Start button, move to Settings, Control

Panel, and click. Double-click on the System icon.

Click the Device Manager tab.

2

Either double-click on the SCSI controllers entry, or click once on the plus sign to the left of it. One entry for each host adapter installed in the system is displayed. Select the adapter desired, then click the

Properties button. Click the Settings tab.

3

The Adapter settings entry will display

“Fast20_Support=x;”, where x is 0 or 1. Do not change anything but the number just to the right of the equal sign. Set this number to:

1 for Ultra SCSI (Fast 20) enabled

0 for Ultra SCSI (Fast 20) disabled

4

Click OK to exit the Settings tab.

3

3-12 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows 95

Important Additional Information

5

Click OK again. If the entry was changed, the

“System Settings Change” dialog box is displayed.

Click Yes to restart the computer.

After the system reboots, the new setting for Ultra SCSI

(Fast 20) is in effect.

Multiple Symbios

Logic Host Adapter

Considerations

3

If multiple Symbios Logic PCI SCSI host adapters are installed in the system, special actions are sometimes required to install or change drivers. This is due to the fact that some Symbios Logic host adapters are supported by the bundled driver, and also that one Symbios driver supports all Symbios host adapters installed in the system.

With multiple Symbios adapters, it is possible to have a situation where one adapter is assigned to one driver, and another is assigned to a different driver. This can cause conflicts which may cause the system to switch to realmode drivers, affecting performance and access to CD-

ROM or tape drives.

There are two methods for ensuring that all Symbios

Logic host adapters are controlled by only one driver

(when installing additional boards or updating drivers).

Method 1

Using the Device Manager, change the driver for a particular host adapter to the desired driver, but when asked to reboot the system for the new settings to take effect, click No. Change drivers for all Symbios Logic host adapters in the system to the new driver, and reply No to rebooting until the final adapter is changed. If booting from a SCSI device, check that the adapter controlling this device is the last one changed.

3

Symbios Logic PCI SDMS User’s Guide 3-13

Device Drivers for Windows 95

Important Additional Information

Method 2

Determine which driver file is active for all adapters through the Properties tab in Device Manager. Go to the

\WINDOWS\SYSTEM\IOSUBSYS directory and rename the driver file to an extension other than MPD.

Reboot the system. While booting, the system may ask to load the bundled driver file from the Windows 95 installation disk. Click OK, then when the system says it can't find the file, click Skip File. Do this for all adapter messages while booting. After the system is booted, use the Device Manager to change the driver for each adapter to the desired driver. Do not reply Yes to reboot the system until the final adapter has been changed.

3

3-14 Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for OS/2

Symbios Logic PCI SDMS User’s Guide

Chapter 4

Device Drivers for OS/2

Introduction

Features of the SDMS OS/2 Driver

Description of the SDMS OS/2 Driver

4-1

4-1

4-2

Installing Your SDMS OS/2 Driver

Installing SYM8XX.ADD (with OS/2 already installed)

4-3

4-3

Installing SYM8XX.ADD and OS/2 from a floppy to a

SCSI Hard Drive 4-4

Installing SYM8XX.ADD and OS/2 from a SCSI

CD-ROM to a SCSI Hard Drive 4-5

Driver Order in the CONFIG.SYS File

Command Line Options

Using the /VERBOSE (or/V) Option

Using the /!DM Option

4-6

4-7

4-7

4-7

Using the /!SM Option:

Using the /SYNCH_RATE (or /SR) Option:

4-8

4-9

Using the /SYNCH_OFFSET (or /SO) Option: 4-10

Using the /TIMEOUT (or /T) Option: 4-11

Using the /DISCONNECT (or /DC) Option: 4-11

Using the /PARITY (or /P) Option: 4-12

Using the /QTAG (or /QT) Option:

Using the /WIDTH (or /W) Option:

Troubleshooting

4-13

4-14

4-15

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for OS/2

Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

4

Introduction

Introduction

The OS/2 operating systems version 3.0 and later provide an integrated platform featuring a graphical windowing interface, called Presentation Manager, that allows multiple applications to be viewed at the same time.

Multitasking is also supported, enabling several different programs to run at the same time in different windows.

Presentation Manager allows the user to switch between programs, start other programs, and maintain files and directories. These versions of OS/2 require an 80386 or higher microprocessor. Other hardware requirements include a minimum of 4 megabytes of RAM (8 megabytes or more is recommended) and a minimum hard disk drive size of 40 megabytes. Symbios Logic SDMS provides the necessary SCSI device driver for OS/2. We recommend reviewing the OS/2 manual prior to proceeding.

Features of the SDMS

OS/2 Driver

4

Enhances host bus adapter performance

Supports synchronous negotiation (including fast

SCSI)

Supports wide SCSI (single-ended and differential)

Supports multiple host adapters

Supports Disconnect/Reselect

Supports scatter/gather

Allows tagged command queuing

4

Symbios Logic PCI SDMS User’s Guide

4 -1

Device Drivers for OS/2

Introduction

Description of the

SDMS OS/2 Driver

4

Although the Symbios Logic SCSI controller's firmware can access the SCSI hard disk drives attached to the computer independently, the SCSI device driver

SYM8XX.ADD acts as an enhanced interface between the computer system and the SCSI BIOS firmware. Use of the device driver increases the abilities of the SCSI controller firmware and fully utilizes the advancements and improvements of 80386 and higher microprocessors.

The device driver is also necessary to support the use of

SCSI tape drives and CD-ROM drives with an OS/2 system. The Symbios Logic SYM8XX.ADD device driver is written in compliance with the IBM OS/2 ADD

(Adapter Device Driver) specification, and will work with third party applications that comply with the same specification.

4-2 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

Installing Your SDMS OS/2

Driver

4

These installation instructions are specific and accurate for the SDMS OS/2 driver SYM8XX.ADD V4.02. You may have a more recent version of this driver. You should refer to the text file OS2.TXT located on the SDMS diskette for a version of these instructions guaranteed to match your driver.

Note:

If you previously installed OS2CAM.ADD (an older version of the OS2 driver), delete OS2CAM.ADD and delete the corresponding BASEDEV= statement in

CONFIG.SYS after you complete installation procedures.

If you previously installed SYM8XX.ADD in a directory other than \OS2\BOOT, move SYM8XX.ADD to

\OS2\BOOT, where the new version of SYM8XX.ADD can replace the old version. The system continues to boot using the previous driver until these steps are taken.

Installing

SYM8XX.ADD (with

OS/2 already installed)

4

The Symbios Logic device driver floppy diskette contains three files, the device driver SYM8XX.ADD, a text file,

SYM8XX.DDP and an executable file,

SYMCHECK.EXE. When the device driver installation utility under OS/2 is activated, it looks for a file with the

DDP extension. The DDP file contains the necessary information to install the SCSI device driver. The EXE file contains a utility that verifies that an appropriate adapter is present.

1

At the OS/2 Desktop, open the System Setup folder located within the OS/2 System folder and doubleclick on the Device Driver Install icon.

Symbios Logic PCI SDMS User’s Guide 4-3

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

2

Insert the floppy diskette containing the Symbios

Logic device driver in the source drive.

3

Choose the Symbios Logic SYM8XX.ADD driver from the list provided by clicking on it once. The choice will be highlighted. Then click the OK button, then the EXIT button.

4

To make sure that the installation was successful, open the productivity folder on the OS/2 Desktop, then double-click on the OS/2 System Editor to start the editor. Open the CONFIG.SYS file in the root directory and find the line:

BASEDEV=SYM8XX.ADD /V

Then check that the file SYM8XX.ADD is in the

\OS2\BOOT directory on the boot drive.

Installing

SYM8XX.ADD and

OS/2 from a floppy to a

SCSI Hard Drive

4

In this case, since OS/2 will be installed from a floppy diskette, it is not required that the driver be present to install the operating system (as is the case when installing from a CD-ROM).

1

After the installation of OS/2 is complete and the

WorkPlace Shell desktop is built, open the System

Setup folder in the OS/2 System folder and doubleclick on the Device Driver Install icon.

2

Insert the floppy diskette containing the Symbios

Logic device driver in the source drive.

3

Choose the Symbios Logic SYM8XX.ADD driver from the list provided by clicking on it once. The choice will be highlighted. Then click the OK button, then the EXIT button.

4-4 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

4

To make sure that the installation was successful, open the productivity folder on the OS/2 Desktop, then double-click on the OS/2 System Editor to start the editor. Open the CONFIG.SYS file in the root directory and find the line:

BASEDEV=SYM8XX.ADD /V

Then check that the file SYM8XX.ADD is in the

\OS2\BOOT directory on the boot drive.

5

Continue with the OS/2 installation process as documented in the OS/2 Installation Guide.

Installing

SYM8XX.ADD and

OS/2 from a SCSI CD-

ROM to a SCSI Hard

Drive

4

To install OS/2 from a SCSI CD-ROM attached to a

Symbios Logic host adapter, the SCSI driver must be present in order to access the CD-ROM. The following steps allow installation of OS/2 from a SCSI CD-ROM.

1

Make copies of the floppy diskettes used for installation that are included with the CD-ROM version of OS/2.

2

Copy the file SYM8XX.ADD from the Symbios

Logic distribution diskette to the copy of “Diskette

1”. “Diskette 1” does not contain enough available space for a copy of SYM8XX.ADD. You must delete files in order to copy the driver file onto the diskette.

If you are installing a version of OS/2 other than Warp

4.0, any unused .ADD driver(s) may be deleted. If you are installing Warp 4.0, consult the

README.1ST file on the Device Driver Pak Volume

1.0 CD. It contains a list of files that may not be deleted. Follow the instructions provided in the

README.1st file.

Symbios Logic PCI SDMS User’s Guide 4-5

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

When .ADD drivers are deleted from “Diskette 1”, make certain to delete or remark out the corresponding BASEDEV= statement in

CONFIG.SYS. Otherwise, error messages will show up during installation.

3

Edit the file CONFIG.SYS on the copy of “Diskette

1” by adding the following line at the end of the file:

BASEDEV=SYM8XX.ADD /V

If you are installing OS/2 Warp 4.0, follow the directions in the README.1ST file for adding the following line to CONFIG.SYS:

SET COPYFROMFLOPPY=1

This will allow SYM8XX.ADD to be copied from the installation diskette to the system's boot drive.

4

Place the copy of “Installation Diskette” in the A: drive and reboot the computer.

5

Proceed with the OS/2 installation process as documented in the OS/2 Installation Guide.

Driver Order in the

CONFIG.SYS File

4

Because of the way OS/2 assigns drive letters, the order in which drivers appear in the CONFIG.SYS file is important. The drivers must appear in the order in which the drive letters are to be assigned. In particular:

OS/2 Warp will install the BASEDEV= line at the beginning of the target system's CONFIG.SYS file regardless of where the line is located in that file on

“Diskette 1”. You may need to rearrange the order in which drivers appear in the CONFIG.SYS file for the target system.

4-6 Symbios Logic PCI SDMS User’s Guide

Command Line

Options

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

If the system is to boot from a hard drive attached to an IDE bus, the IDE driver must appear before

SYM8XX.ADD in CONFIG.SYS.

Refer to the OS/2 documentation to fully understand this requirement.

4

The SYM8XX.ADD driver has several embedded functions which can be accessed via switches on the command line in the CONFIG.SYS file. These options are described below.

Using the /VERBOSE (or/V) Option

Usage:

4

/VERBOSE

This option appears on the command line by default. It enables display of a banner, version number, and SCSI bus information during start up of the system.

For example, if you wish to see more detailed information displayed when you boot, the line in CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /VERBOSE or

BASEDEV=SYM8XX.ADD /V

To disable this feature, remove this switch from the command line.

Using the /!DM Option

Usage:

/!DM<path[:id]>[,<path[:id]>]*

4

Symbios Logic PCI SDMS User’s Guide 4-7

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

Where: path represents a host adapter ID. id represents a SCSI target ID on the indicated path.

[ ]s indicate optional information.

* indicates the pattern enclosed in the [ ]s may be repeated.

This option disables use of the IBM-supplied SCSI manager (OS2SCSI.DMD) for the devices listed. The

SCSI manager is used to support SCSI tape drives.

For example, if you want to disable OS2SCSI.DMD for devices on host adapter 0 at target IDs 3 and 5, the line in

CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /!SM<0:3>,<0:5>

Using the /!SM Option:

Usage:

4

/!SM<path[:id]>[,<path[:id]>]*

Where: path represents a host adapter ID. id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

This option disables use of the IBM-supplied SCSI manager (OS2SCSI.DMD) for the devices listed. The

SCSI manager is used to support SCSI tape drives.

For example, if you want to disable OS2SCSI.DMD for devices on host adapter 0 at target IDs 3 and 5, the line in

4-8 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /!SM<0:3>,<0:5>

Using the /SYNCH_RATE (or /SR) Option:

Usage:

4

/SYNCH_RATE=n<path[:id]>[,n<path[:id]>]*

Where: n =0, 5, 10 or 20.

path represents a host adapter ID.

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

This sets the maximum synchronous transfer rate (in mega transfers per second) to negotiate with a particular device. The allowable values for this setting are 0, 5, 10 and 20 mega transfers per second, if the adapter is capable of the specified speed. All host adapters in the

8XX family support at least 10 mega transfers per second; some support 20 mega transfers per second. To turn off synchronous transfers for a particular device, specify 0

(zero). The value set by this option only defines the maximum transfer rate negotiated. The actual rate also depends on what the device can do. The default value is the fastest transfer rate that is supported by a particular host adapter.

For example, if you want to turn off synchronous transfers to ID=3 on host adapter 0, the line in CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /SYNCH_RATE=0<0:3>

Symbios Logic PCI SDMS User’s Guide 4-9

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

As another example, if you want to set synchronous transfers to 10 mega transfers per second on all devices on adapter 1, the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /SR=10<1>

Using the /SYNCH_OFFSET (or /SO) Option:

4

Usage:

/SYNCH_OFFSET=n<path[:id]>[,n<path[:id]>]*

Where: n = 0..maximum synchronous offset for the adapter.

path represents a host adapter ID.

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

This sets the maximum synchronous offset to negotiate with a particular device. The allowable values for this setting are 0 to the maximum synchronous offset supported by the specified path. The SYM53C8XX controller chips support offsets up to 16. If 0 (zero) is specified for the synchronous offset value, then synchronous transfers are turned off for any specified device. The value set by this option only defines the maximum offset that is negotiated. The resulting rate also depends on the device capability. The default value is the maximum offset that is supported by a particular host adapter.

For example, if you want to change the synchronous offset to 6 for ID=3, the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /SYNCH_OFFSET=6<0:3>

4-10 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

Using the /TIMEOUT (or /T) Option:

Usage:

/TIMEOUT=n<path[:id]>[,n<path[:id]>]*

Where: n = time-out value in seconds for device n=(0..65535), 0=infinite.

path represents a host adapter ID.

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

SYM8XX.ADD uses a time-out mechanism to detect certain errors. When SYM8XX.ADD issues a command to a SCSI device, a timer is started. If the timer expires before the command completes, SYM8XX.ADD assumes that something has gone wrong with the device, and takes steps to recover. The default value for this is 10 seconds, and the maximum setting for this switch is 0, which represents no time-out. If you set the value to be less than the system has allocated for a particular device, your value will be ignored.

For example, if you have a particularly slow device on

ID=3 and you wish to extend the time-out on this device to 60 seconds, then the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

4

BASEDEV=SYM8XX.ADD /TIMEOUT=60<0:3>

Using the /DISCONNECT (or /DC) Option:

Usage:

/DISCONNECT=n<path[:id]>[,n<path[:id]>]*

4

Symbios Logic PCI SDMS User’s Guide 4-11

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

Where: n = ON or OFF.

path represents a host adapter ID.

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

SCSI devices have the ability to disconnect from the bus during an I/O transfer. This option is used to allow (or not allow) a device to disconnect during an I/O. If a particular adapter has parity checking disabled, then you must use this option to disable disconnects for all devices on that adapter that do not generate parity. This is because the /PARITY option does not change the disconnect state for any device on that adapter. See the

/PARITY option for more information.

Valid options are “ON” (allow disconnects) and “OFF”

(do not allow disconnects). The default for all devices is

“ON”.

For example, if you want to disable disconnects on the device at ID=2, then the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /DISCONNECT=OFF<0:2>

Using the /PARITY (or /P) Option:

Usage:

/PARITY=n<path[,path]*>[,n<path[,path]*>]*

Where: n = ON or OFF.

path represents a host adapter ID.

[ ]'s indicate optional information.

4

4-12 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

* indicates the pattern enclosed in the [ ]'s may be repeated.

The SYM53C8XX chips are capable of enabling or disabling the SCSI bus data integrity checking feature know as “parity”. Some non-SCSI compliant devices sold as SCSI devices do not generate parity. You can use this option to disable parity checking. The SYMC538XX chips always generate parity (for outputs), but may optionally check the parity (for inputs). Valid options are

“ON” (check parity) and “OFF” (do not check parity).

The default for all devices is “ON”, which enables parity checking for all devices.

Note:

When disabling parity checking, it is necessary to disable disconnects for any device that does not generate parity, as the SYM53C8XX chips cannot disable parity checking for that device during the reselection phase.

Please refer to using the /DISCONNECT option for more information on how to disable disconnects for a device. If a device does not generate parity and it disconnects, the I/O never completes as the reselection never completes.

For example, to turn off parity checking on host adapter number 0, the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /PARITY=OFF<0>

Using the /QTAG (or /QT) Option:

Usage:

/QTAG=n<path[:id]>[,n<path[:id]>]*

4

Symbios Logic PCI SDMS User’s Guide 4-13

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

Where: n = the number of queue tags allowed for a device

(0..256).

path represents a host adapter ID.

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

Queue tagging is used to allow more than one outstanding command per SCSI device. Some non-SCSI compliant devices sold as SCSI devices do not allow queue tags, in which case queue tagging needs to be disabled. The value given in the command line will be the depth of the queue for queue tags for the device(s) indicated. To disable queue tag support, a value of 0 or 1 should be given.

For example, to turn off queue tagging for ID 3 on host adapter number 0, the line in CONFIG.SYS that loads

SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /QTAG=0<0:3>

As another example, if you want to set the queue depth to

5 for all devices on host adapter number 2, the line in

CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /QT=5<2>

Using the /WIDTH (or /W) Option:

Usage:

/WIDTH=n<path[:id]>[,n<path[:id]>]*

Where: n = 8 or 16.

path represents a host adapter ID.

4

4-14 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

id represents a SCSI target ID on the indicated path.

[ ]'s indicate optional information.

* indicates the pattern enclosed in the [ ]'s may be repeated.

Devices attached to a SCSI bus are narrow or wide devices. Narrow devices transfer data one byte (or 8 bits) at a time. Wide devices transfer two bytes (or 16 bits) at a time. The value given in the command line option will determine the size of data transfers.

For example, to have the device at ID 3 on host adapter number 0 treated as a narrow device, the line in

CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /WIDTH=8<0:3>

As another example, if you want to have all devices on host adapter number 2 treated as narrow devices, the line in CONFIG.SYS that loads SYM8XX.ADD should look like this:

BASEDEV=SYM8XX.ADD /W=8<2>

Troubleshooting

4

YOU CANNOT ACCESS THE SCSI DEVICES.

a

Make sure the SCSI device driver is installed properly.

b

Make sure each device has power.

c

Verify that a BASEDEV = SYM8XX.ADD /V line exists in the CONFIG.SYS file.

d

Verify that SYM8XX.ADD is in the appropriate directory (\OS2\BOOT).

Symbios Logic PCI SDMS User’s Guide 4-15

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

THE COMPUTER HANGS OR LOCKS UP WHEN

BOOTING AND THE SCSI DEVICES ATTACHED

ARE NOT SEEN BY THE COMPUTER SYSTEM.

a

Make sure that all the SCSI devices are configured at different ID numbers (the boot drive must have the lowest ID).

b

Make sure both, but only, the ends of the SCSI bus are terminated.

c

Make sure the device driver is listed in CONFIG.SYS

(and loaded when booting).

THE DEVICE DRIVER DOES NOT SEE ONE OF

THE SCSI DEVICES.

a

Reboot the computer.

b

Make sure the SCSI devices have different ID numbers (the boot drive must have the lowest ID).

c

Make sure both, but only, the ends of the SCSI bus are terminated.

d

Check the cable and power connections.

OS/2 INSTALLS TO AN IDE DRIVE IN THE

SYSTEM INSTEAD OF INSTALLING TO THE SCSI

DRIVE.

The IDE drive must be physically disconnected and disabled in the CMOS setup before attempting to install to a SCSI drive.

THE FOLLOWING MESSAGE IS DISPLAYED AT

BOOTUP.

“OS/2 is unable to operate your hard disk or diskette drive. The system is stopped. Correct the preceding error and restart the system.”

4-16 Symbios Logic PCI SDMS User’s Guide

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver a

This problem is caused when your system is booting from a hard drive attached to an IDE bus, a SCSI disk is attached to your SYM8XX host adapter, and the statement:

BASEDEV=SYM8XX.ADD /V appears in the CONFIG.SYS file before the IDE device driver statement.

b

Boot the system using the floppy drive and installation diskettes to the F3=Command Prompt screen. Use the tedit.exe editor to edit the CONFIG.SYS file.

Move the BASEDEV=SYM8XX.ADD /V statement to the last line in the CONFIG.SYS file.

c

Restart your system.

DURING MODERATE TO HEAVY I/O LOADS THE

MACHINE HANGS

a

If you are running OS/2 Warp SMP on a multiprocessor machine, IBM has published an errata which may affect your system. On some multiprocessor platforms, during moderate to heavy I/O loads, the machine will hang. This hang is due to a configuration problem between the machine and

OS/2's SMP program, OS2APIC.PSD. In order to keep this from happening, we suggest that you add the following command line option exactly as shown to the PSD= line in the CONFIG.SYS file.

Old line:

PSD=OS2APIC.PSD

New line:

PSD=OS2APIC.PSD /prec=lid

Symbios Logic PCI SDMS User’s Guide 4-17

Device Drivers for OS/2

Installing Your SDMS OS/2 Driver

The /prec=lid text IS case-sensitive, make sure you use lower case letters and do not add any spaces to the example. This will keep your machine from encountering the hang condition.

4-18 Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Driver for SCO UNIX

Symbios Logic PCI SDMS User’s Guide

Chapter 5

Device Driver for SCO UNIX

Introduction

Features

Description

Procedure 1 Existing System Installation

5-1

5-2

5-3

5-3

Procedure 2 New System Installation 5-4

The Symbios Logic CAM3 SCSI Configuration

Tool 5-4

Installing Your SCO UNIX Driver

Procedure 1 Existing System Installation

Procedure 2 New System Installation

Troubleshooting

Important Additional Information

How to Remove a SCSI Disk Drive From

SCO UNIX

5-6

5-6

5-16

5-18

5-22

5-22

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Driver for SCO UNIX

Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

5

Introduction

Introduction

SCO UNIX is the first UNIX operating system licensed for IBM-compatible microcomputers. The integrated communications, file system, international application support, and documentation create an ideal platform for those requiring a full-featured, UNIX-based operating system. SCO UNIX takes full advantage of the capabilities of the 80386 and above microprocessors.

To connect SCSI devices to one or more host adapters, you must place the proper host adapter drivers in the

SCO UNIX kernel. Your Symbios Logic Boot Time

Loadable Driver (BTLD) diskette contains three packages: bhba is the driver for SCO UNIX 3.2v4x

slha is the driver for SCO UNIX OpenServer

CAM3 is the SCSI configuration tool

You must link-edit the proper driver into the SCO UNIX kernel. The kernel must reside on the boot drive: either an internal, non-SCSI hard drive (IDE, ESDI, or

ST506), or a SCSI hard drive attached to host adapter 0 with SCSI ID 0 and LUN 0. The BTLD permits an easy installation of UNIX with the software provided by SCO.

The CAM3 SCSI configuration tool simplifies adding

SCSI peripheral device support into the operating system.

SCO UNIX 3.2v4x provides installation diskettes labeled

N1, N2, and M1. Additional software is provided on CD-

ROM, tape cartridge, or diskettes. These media, along with the Symbios Logic BTLD diskette, are needed to perform a new installation of your bhba driver onto a boot drive.

5

Symbios Logic PCI SDMS User’s Guide

5 -1

Device Driver for SCO UNIX

Introduction

Figure 5-1

5

Symbios Logic Installation Tools

SCO OpenServer provides only one installation diskette, labeled Boot Disk. This diskette, along with your Symbios

Logic BTLD diskette (containing your slha driver), and other software media, are used during a SCO OpenServer installation.

BTLD

Allows

Easy

SCO

UNIX

O/S

Installation

On A

Hard

Drive

Features

5-2

CAM3

Allows

Easy

SCSI

Device

Installation

In The

SCO

UNIX

O/S

The following sections provide instruction on configuring the SCO UNIX kernel with your Symbios Logic driver, installing SCO UNIX onto a hard drive, and adding SCSI peripheral devices. These instructions assume you are familiar with UNIX system administration.

5

Provides easy UNIX installation on a hard disk with the Symbios Logic Boot Time Loadable Driver

(BTLD) diskette

Provides easy SCSI device support installation with the Symbios Logic CAM3 SCSI configuration tool

Multiple processor support (with SCO Symmetrical

Multiprocessing Support package installed)

Supports synchronous negotiation (including fast

SCSI)

Symbios Logic PCI SDMS User’s Guide

Description

Device Driver for SCO UNIX

Introduction

Supports Wide SCSI (single-ended and differential)

Supports Disconnect/Reselect

Supports scatter/gather

Allows tagged command queuing

Provides dynamic interrupt mapping

Supports target initiated negotiation

Allows shared interrupts

Supports Multiple LUNs

Allows automatic drive spin up

Supports RAID up to 1024 byte block sizes

5

UNIX installation on a SCSI system requires creation of a

SCO UNIX kernel that contains the SCSI driver to support SCSI devices. There are two possible installation procedures:

1

Loading or updating the proper Symbios Logic driver on a boot drive.

2

Installing UNIX and the proper Symbios Logic driver for the first time on a SCSI boot drive.

Procedure 1

Existing System Installation

If you plan to attach SCSI devices to a Symbios Logic host adapter while using a non-SCSI hard drive (IDE,

ESDI, ST506) as the boot hard drive already containing a

SCO UNIX system, execution of Procedure 1 is all that is necessary. This installs the Symbios Logic driver on the non-SCSI boot drive. Some of the SCSI devices supported include tape drives, CD-ROM drives, and

SCSI hard disk drives used as secondary storage. This procedure is also followed to replace a previously installed

Symbios Logic driver on a SCSI or non-SCSI boot drive.

5

Symbios Logic PCI SDMS User’s Guide 5-3

Device Driver for SCO UNIX

Introduction

Procedure 2

New System Installation

If you plan to perform a new SCO UNIX installation that includes the proper Symbios Logic driver, then follow

Procedure 2. Procedure 2 uses a Boot Time Loadable

Driver (BTLD) to provide a user friendly method for installing SCO UNIX onto a hard disk drive.

Each of these procedures is described in detail below.

Symbios Logic recommends that you complete the entire installation in one session. You should have sufficient time

(possibly over an hour) available to complete this without interruption.

5

The Symbios Logic CAM3 SCSI Configuration

Tool

5

Both installation procedures may use the Symbios Logic

CAM3 SCSI configuration tool to load your Symbios

Logic SCSI driver into the SCO UNIX kernel. This utility is provided on the Symbios Logic BTLD diskette for SCO UNIX. The CAM3 main menu presents the following options:

The CAM3 Main Menu Options

1

Configure the Symbios Logic SCSI Device Driver

2

Add or Remove Specific Devices

3

Relink Unix

4

Remove All SCSI Devices

5

Show Current SCSI Configuration

5-4 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Introduction

Some of these options are referred to in the following procedures. After completion of either installation procedure, you may invoke CAM3 again from the UNIX prompt by typing: mkdev cam3

In this way, you may use CAM3 to make subsequent changes to the system configuration.

Symbios Logic PCI SDMS User’s Guide 5-5

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Procedure 1

Existing System

Installation

Installing Your SCO UNIX

Driver

5

5

This procedure assumes SCO UNIX is already installed on a hard disk drive. This installation is necessary to build a new UNIX kernel which includes the proper Symbios

Logic host adapter driver. The basic steps for accomplishing this are outlined below. For more details on UNIX installation, refer to the SCO UNIX System

Administrator's Reference manual.

1

Symbios Logic recommends creating a second copy of the UNIX kernel. Log in as root and issue the command: cp /unix /unix.good

This creates a second copy of the UNIX kernel under the name /unix.good.

Note:

If any problems arise with the new UNIX kernel being built, this procedure ensures that a valid copy of the UNIX kernel will be available.

To access this valid UNIX kernel, type at the colon after the boot message: unix.good

2

Install your Symbios Logic driver.

a

Insert the Symbios Logic BTLD diskette in the drive and type: installpkg

5-6 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Press the Enter key to continue.

b

A prompt appears to insert the requested diskette.

Since the Symbios Logic diskette is already inserted, press the Enter key to continue.

c

A prompt now asks for the name of the package.

Type: bhba if your SCO UNIX is release 3.2v4x, or slha if your SCO UNIX is OpenServer. Press the Enter key to continue.

d

If a driver is already present from a previous installation, a prompt inquires about replacing it.

Replace it if there is reason to believe it is corrupted, or if you are installing a newer version.

e

To execute CAM3, remove the Symbios Logic diskette from the drive (since CAM3 is now installed on the hard drive), then type: mkdev cam3

Press the Enter key to continue.

f

The CAM3 main menu is displayed. To check what SCSI devices are installed, type 5 and press

Enter to show the current SCSI configuration. If you are only updating the Symbios Logic driver, skip to step 6 to rebuild the kernel.

g

From the CAM3 main menu, select option 1 to configure your Symbios Logic driver. Three options are displayed:

1

Configure Symbios Logic Host Adapter

Software

Symbios Logic PCI SDMS User’s Guide 5-7

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

2

Remove Symbios Logic Host Adapter

Software from System Configuration

3

Return to Main Menu

h

To configure your Symbios Logic host adapter software select 1 from this menu.

i

A prompt is displayed to set the interrupt line to be used by the host adapter. The Symbios Logic driver performs dynamic interrupt mapping.

Therefore, type 0 (zero) and press Enter. To exit this process, press Enter, or type q and press

Enter.

Note:

If the system indicates that the proper interrupt lines for the SCSI host adapter are not available, review the section under

Troubleshooting concerning possible kernel rebuild problems and edit the sdevice entries to eliminate the conflict.

3

Adding a SCSI Disk Drive.

Note:

If you are not adding a SCSI disk drive to this system, go to step 4.

a

Select option 5 from the CAM3 main menu to show the SCSI configuration. Note each host adapter number assigned to a Symbios Logic host adapter. You need this information throughout this installation procedure.

b

From the CAM3 main menu, select option 2 to add or remove specific devices. A list appears showing the current configuration followed by a menu of these options:

5-8 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Add or Remove Specific Devices Menu Options

1

Reconfigure Sdsk (Disk Drive)

2

Reconfigure Stp (Tape Drive)

3

Reconfigure Srom (CD-ROM)

4

Invoke the SCO low level SCSI Configuration script

5

Return to the previous menu

To add a SCSI disk drive, select option 1 to reconfigure Sdsk, and press Enter.

c

Read the explanatory text that appears and follow the prompts. Press Enter at the next two prompts to scroll through the explanatory text. A prompt appears to add another SCSI disk. Type y and press Enter. Select option 2 to add a drive to the

Symbios Logic host adapter and press Enter.

d

The system prompts for the identifier of the host adapter that supports this device. If the default is correct, press Enter. If the default is not correct, type: bhba if your SCO UNIX is release 3.2v4x, or slha if your SCO UNIX is OpenServer.

Press Enter.

Symbios Logic PCI SDMS User’s Guide 5-9

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver e

The system prompts for which host adapter supports the disk drive. Type the correct host adapter number and press Enter.

If this is the first Symbios Logic host adapter added to the SCO UNIX kernel, the system prompts if you want to update the link-kit (add another host adapter). Type y and press Enter. If you entered the host adapter number incorrectly, type n, and press Enter. The system prompts for the host adapter identifier of the preceding step.

f

With SCO OpenServer, the system prompts for the bus number of the disk drive. Since Symbios

Logic host adapters support one bus per adapter, press Enter to get the default of zero, or type 0

(zero) and press Enter.

With SCO 3.2v4x, this prompt does not appear.

Proceed to the next step.

g

The system prompts for the Target ID of the disk drive. Type the SCSI ID number of the disk drive and press Enter. If the ID entered is in the range

8-15, a prompt requests verification that the device you are adding is a wide (16-bit) device, as only wide devices may have IDs greater than 7.

Type y and press Enter if the device is wide. Type n and press Enter if an ID greater than 7 is incorrectly entered for a narrow (8-bit) device.

The Target ID prompt is then re-issued so you can enter the correct Target ID.

h

The system prompts for the LUN (Logical Unit

Number) of the disk drive. Type the desired LUN and press Enter, or press Enter for the default value of zero.

5-10 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver i

The system prompts to update the SCSI

Configuration file. Type y and press Enter if the displayed values are correct. Type n if the values are incorrect, and retry from step 3d.

j

A prompt appears to create a new kernel. Type n

(this is done later) and press Enter.

4

Adding a SCSI Tape Drive.

Note:

If you are not adding a SCSI tape drive to this system, go to step 5.

a

Select option 5 from the CAM3 main menu to show the SCSI configuration. Note the host adapter number of each Symbios Logic host adapter. You need this information throughout this installation procedure.

b

From the CAM3 main menu, select option 2 to add or remove specific devices. A list appears showing the current configuration followed by a menu of choices. To add a SCSI tape drive, select option 2 and press Enter.

c

Instructions on using a SCSI tape drive are displayed. Press Enter at the next three prompts to scroll through the explanatory text and start the mkdev tape utility for installing a tape drive.

d

The Tape Drive Configuration Program menu appears. Select option 1 to install a tape drive, and press Enter.

e

The Tape Drive Installation Menu appears. Select option 4 to install a SCSI tape drive, and press

Enter. From the next list select the type of SCSI tape drive to install, and press Enter.

Symbios Logic PCI SDMS User’s Guide 5-11

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver f

The system prompts to configure the tape drive.

Type y and press Enter.

g

The system prompts for the identifier of the host adapter that supports this device. If the default is correct, press Enter. If the default is not correct, type: bhba if your SCO UNIX is release 3.2v4x, or slha if your SCO UNIX is OpenServer.

Press Enter.

h

The system prompts for which host adapter supports the tape drive. Type the correct host adapter number and press Enter.

If this is the first Symbios Logic host adapter added to the SCO UNIX kernel, the system prompts if you want to update the link-kit (add another host adapter). Type y

and press Enter. If you entered the host adapter number incorrectly, type n, and press Enter. The system prompts for the host adapter identifier of the preceding step.

i

With SCO OpenServer, the system prompts for the bus number of the tape drive. Since Symbios

Logic host adapters support only one bus per adapter, press Enter to get the default of zero, or type 0 (zero) and press Enter.

With SCO 3.2v4x, this prompt does not appear.

Proceed to the next step.

5-12 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver j

The system prompts for the SCSI ID of the tape drive. Type the SCSI ID number of the tape drive and press Enter.

k

The system prompts for the LUN (Logical Unit

Number) of the tape drive. Type 0 (zero) and press Enter. The system then prompts to update the SCSI configuration file. Type y

and press

Enter.

l

A list is displayed showing the special devices created. Press Enter, and a list is displayed showing the links to the installed tape drive. When prompted for a boot string, type q and press Enter to return to the Tape Drive Configuration

Program menu. Type q and press Enter to terminate the Tape Drive Configuration Program menu.

m A prompt appears to create a new kernel. Type n

(as this is done later) and press Enter to return to the CAM3 main menu.

5

Adding a SCSI CD-ROM Drive.

Note:

If you are not adding a SCSI CD-ROM drive to this system, go to Step 6.

a

Select option 5 from the CAM3 main menu to show the SCSI configuration. Note the host adapter number of each Symbios Logic host adapter. You need these throughout this installation procedure.

b

From the CAM3 main menu, select option 2 to add or remove specific devices. A list appears showing the current configuration followed by a menu of choices. To add a CD-ROM drive, select option 3 and press Enter.

Symbios Logic PCI SDMS User’s Guide 5-13

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver c

Instructions on using a CD-ROM drive are displayed. Press Enter two more times at the prompts to scroll through the explanatory text and start the mkdev CD-ROM utility for installing a

CD-ROM drive.

d

The CD-ROM Configuration Program menu appears. Select option 1 to install a CD-ROM drive and press Enter.

e

The system prompts to configure the CD-ROM

Drive. Type y and press Enter.

f

The system prompts for the identifier of the host adapter that supports this device. If the default is correct, press Enter. If the default is not correct, type: bhba if your SCO UNIX is release 3.2v4x, or slha if your SCO UNIX is OpenServer.

Press Enter.

g

The system prompts for which host adapter supports the CD-ROM drive. Type the correct host adapter number and press Enter.

If this is the first Symbios Logic host adapter added to the SCO UNIX kernel, the system prompts if you want to update the link-kit (add another host adapter). Type y and press Enter. If you entered the host adapter number incorrectly, type n, and press Enter. The system prompts for the host adapter identifier of the preceding step.

5-14 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver h

With SCO OpenServer, the system prompts for the bus number of the CD-ROM. Since Symbios

Logic host adapters support only one bus per adapter, press Enter to get the default of zero, or type 0 (zero) and press Enter.

With SCO 3.2v4x, this prompt does not appear.

Proceed to the next step.

i

The system prompts for the SCSI ID of the CD-

ROM Drive. Type the SCSI ID number and press

Enter.

j

The system prompts for the LUN (Logical Unit

Number) of the CD-ROM drive. Type 0 (zero) and press Enter.

k

The system prompts to update the SCSI configuration file. Type y and press Enter. A prompt appears to configure a CD-ROM/TAPE installation device. Unless this is desired, type n and press Enter. A prompt appears to add a highsierra file system. Type y and press Enter. The system displays the High Sierra/ISO9600 file system Configuration Program menu. Select option 1 to add high-sierra and press Enter. The system updates the SCSI configuration file and returns to the CD-ROM Configuration Program menu. Type q and press Enter to terminate the

CD-ROM Configuration Program menu.

l

A prompt appears to create a new kernel. Type n

(this is done later) and press Enter.

6

Rebuilding the Kernel.

a

The system now returns to the CAM3 main menu. Select option 3 to relink UNIX and press

Enter.

Symbios Logic PCI SDMS User’s Guide 5-15

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Procedure 2

New System

Installation

b

A prompt appears asking to rebuild the kernel.

Type y and press Enter. The kernel is now linked, which takes a few minutes. Messages appear while the kernel is linking.

c

When the kernel is rebuilt, the system prompts as to whether this kernel is to boot by default. Type y and press Enter.

d

The system prompts whether to rebuild the kernel environment. Type y and press Enter. When the

CAM3 main menu appears, type q and press

Enter.

e

To activate the new kernel the you must reboot the system. Type the command: reboot

Press Enter.

f

Press Enter at the Boot: prompt and the new kernel will load.

g

Log in as usual.

5

This procedure installs SCO UNIX onto a hard disk drive. This installation is necessary to build a new UNIX kernel that includes your Symbios Logic driver. For more details on UNIX installation refer to the SCO UNIX

System Administrator's Reference manual.

1

Link the Symbios Logic BTLD into the UNIX kernel during installation.

a

Insert the SCO UNIX installation diskette and reboot the system. For SCO 3.4v4x this diskette is labeled N1, for SCO OpenServer this diskette is labeled Boot Disk.

5-16 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver b

At the Boot: prompt type: link

Press Enter.

c

At the next prompt type: bhba if your SCO UNIX is release 3.2v4x, or slha if your SCO UNIX is OpenServer.

Do not remove the diskette. Press Enter.

d

When prompted, replace the diskette with the

Symbios Logic BTLD diskette, and press Enter.

When using the BTLD to install SCO UNIX, the

CAM3 configuration tool is automatically installed.

e

Continue from this point as a normal installation according to the SCO UNIX documentation.

Note:

For SCO 3.4v4x, you must include the

Extended Utilities package during the installation.

For SCO OpenServer, this is done automatically.

f

Symbios Logic recommends creating a second copy of the UNIX kernel.

Log in as root and issue the command: cp /unix /unix.good

This creates a second copy of the UNIX kernel under the name /unix.good.

Symbios Logic PCI SDMS User’s Guide 5-17

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Troubleshooting

Note:

If any problems arise with building the new

UNIX kernel, this procedure ensures that a valid copy of the UNIX kernel is still available.

To access this valid UNIX kernel, type at the colon after the boot message: unix.good

2

Install SCSI device support.

a

After rebooting the system, type: mkdev cam3

Press Enter to continue.

b

Continue from Procedure 1, step 2f.

5

The following conditions should exist after a successful installation:

The directory etc/conf/sdevice.d should contain a file named bhba or slha, depending on your SCO

UNIX version. This file contains the sdevice entries.

The directory etc/conf/cf.d contains files sdevice, mdevice, and mscsi. Files sdev.hdr and mdev.hdr describe the values of the possible field entries in the files sdevice and mdevice, respectively.

— The sdevice file should contain a bhba or slha entry for each Symbios

— The second field in the sdevice file should read

“Y”.

— A bhba or slha entry should appear in the mdevice file.

— A bhba or slha entry for each configured SCSI device should appear in the mscsi file

.

5-18 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

Directory etc/conf/pack.d/bhha or directory etc/conf/pack.d/slha should exist and contain the files Driver.o and space.c.

The following are some problems and their suggested solutions:

AN INTERRUPT CONFLICT MESSAGE APPEARS.

a

In the sdevice file, check the fifth field of the bhba or slha entry for a conflict with that of any competing driver.

A SCSI DEVICE IS NOT FOUND.

a

Reboot to observe the system configuration table when it appears.

b

Look for bhba or slha entries for each SCSI device connected to a Symbios Logic host adapter.

c

Check to see that the desired value for each field exists.

UNIX SYSTEM BEHAVES UNRELIABLY AFTER A

CONFIGURATION CHANGE.

a

Whenever the hardware or software configuration is altered, you must rebuild the kernel. Use the

Relink UNIX option of the CAM3 configuration tool, or change to the directory /etc/conf/cf.d and type:

../link_unix to rebuild the kernel.

Symbios Logic PCI SDMS User’s Guide 5-19

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

DURING KERNEL REBUILD, AN ERROR

MESSAGE INDICATES THE CHARACTER DEVICE

NUMBER OF DEVICE cn CONFLICTS WITH THE

CHARACTER DEVICE NUMBER OF bhba OR slha.

a

Reinstall the proper Symbios Logic driver using the installpkg utility. Remember to relink the kernel.

b

Reboot the system.

DURING INSTALLATION, THE ROOT DISK IS

NOT FOUND, OR THE PARTITIONING OF THE

DISK FAILS.

a

If your boot drive is a SCSI disk, check that it is assigned SCSI ID 0 (zero), and is configured to host adapter 0 (zero), LUN 0 (zero).

b

If a SCSI tape drive is used in the initial installation:

Check that the tape drive is assigned SCSI ID 2, and that it is configured to host adapter 0 (zero),

LUN 0 (zero).

Check that the ID of the tape drive does not conflict with any other SCSI device ID.

c

If a SCSI CD-ROM drive is used in the initial installation:

Check that the CD-ROM drive SCSI ID is set to

5, and that it is configured to host adapter 0

(zero), LUN 0 (zero).

Check that the ID of the CD-ROM drive does not conflict with any other SCSI device ID.

d

During installation, you are given the option of retaining current partitions on the root hard disk.

For instance, you could have a DOS partition or a

5-20 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Installing Your SCO UNIX Driver

user UNIX partition already established on the drive. Usually, these partitions are desired.

However, the root and swap partitions are established during installation. If problems exist with these partitions, you may need to execute the

DOS FDISK procedure to delete these partitions before installation.

Symbios Logic PCI SDMS User’s Guide 5-21

Device Driver for SCO UNIX

Important Additional Information

Important Additional

Information

How to Remove a

SCSI Disk Drive

From SCO UNIX

5

Use the following steps to remove a SCSI disk drive from

SCO UNIX.

1

From the CAM3 main menu, select the option to add or remove specific devices. A list appears showing the current configuration followed by a menu of choices.

To remove a SCSI disk drive, select option 4 and press

Enter.

2

A user prompt to review SCSI ID information is displayed. After responding to the prompt, press

Enter to start the mkdev .scsi utility for removing a

SCSI disk drive.

3

The .scsi utility program menu appears. Select option

2 to remove a disk drive and press Enter.

4

The system prompts to remove a SCSI device. Select option 1 to remove a disk drive and press Enter.

5

The system prompts for the identifier of the host adapter that supports this device. If the default is correct, press Enter. If the default is not correct, type: bhba if your SCO UNIX is release 3.2v4x, or slha

5

5-22 Symbios Logic PCI SDMS User’s Guide

Device Driver for SCO UNIX

Important Additional Information

if your SCO UNIX is OpenServer.

Press Enter.

6

The system prompts for which SCSI host adapter supports the disk drive. Respond with the correct host adapter number, and press Enter.

If this is the first Symbios Logic host adapter added to the SCO UNIX kernel, the system prompts if you want to update the link-kit (add another host adapter). Type y and press Enter. If you entered the host adapter number incorrectly, type n, and press

Enter. The system prompts for the host adapter identifier of the preceding step.

7

With SCO OpenServer, the system prompts for the bus number of the disk drive. Since Symbios Logic host adapters support one SCSI bus per host adapter, press Enter to get the default value of zero.

With SCO 3.2v4x, this prompt does not appear.

Proceed with the next step.

8

The system prompts for the SCSI ID of the disk drive.

Type the SCSI ID number and press Enter.

9

The system prompts for the LUN (Logical Unit

Number) of the drive. Type the correct LUN and press Enter, or press Enter for the default value of 0

(zero).

10 The system prompts to update the SCSI configuration file. Type y and press Enter. The system updates the

SCSI configuration file and returns to the Main

CAM3 Program menu.

Symbios Logic PCI SDMS User’s Guide 5-23

Device Driver for SCO UNIX

Important Additional Information

11 A prompt appears to create a new kernel to effect the system configuration change. Type n (this is done later) and press Enter.

After all unwanted SCSI disk drives are removed, go to step 6, Rebuilding the Kernel, in Procedure 1.

5-24 Symbios Logic PCI SDMS User’s Guide

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for UnixWare

Chapter 6

Device Drivers for UnixWare

Introduction

Features

Description

6-1

6-2

6-2

Installing Your SDMS UnixWare Driver 6-4

Installing the Driver During UnixWare Installation 6-4

Updating UnixWare 2.xx With the C8xx Driver 6-5

Loading the Package

Configure for Statically Linked Driver

Configure for Dynamically Loadable Driver

6-6

6-7

6-7

Loading Loadable Module

Rebuild the UnixWare Kernel

Troubleshooting

6-8

6-9

6-9

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for UnixWare

Symbios Logic PCI SDMS User’s Guide

Device Drivers for UnixWare

6

Introduction

Introduction

UnixWare 2.xx extends the UNIX SVR4.2 operating system, allowing tight integration with NetWare in an easy to use graphical form. UnixWare features include a graphical user interface, NetWare networking, application compatibility, multitasking capability, and multi-user capability. In addition UnixWare 2.xx provides multiprocessor support.

The storage device drivers for UnixWare are based on the

Portable Device Interface (PDI) architecture. PDI logically breaks down a driver into a controller specific portion (C8xx host adapter driver) and a device specific portion (the target driver). The third component is SDI

(the SCSI Device Interface), a kernel resident driver that interfaces with both the target driver and host adapters.

The Symbios Logic SDMS C8xx driver allows SCO

UnixWare (previously Novell UnixWare) operating systems to interface with SCSI devices connected to a

Symbios Logic 53C8xx chipset and/or Symbios Logic

8xxxx host adapter cards. The driver can be statically linked (integrated) or dynamically linked (loadable) with the kernel. If the driver is integrated with the kernel, then the rebuilt kernel must reside on the boot drive. The following sections describe the procedures to install the driver during a first time installation of UnixWare, and to update already installed UnixWare with the Symbios

Logic SDMS C8xx driver.

6

Symbios Logic PCI SDMS User’s Guide

6 -1

Device Drivers for UnixWare

Introduction

Figure 6-1

6

Portable Device Interface (PDI)

Architecture

Disk sd01 Tape st01 CD-ROM Worm sw01

SCSI Device Interface

(SDI)

C8XX Device Driver

Features

Description

6

Allows easy installation using PDI - ID tools.

Provides synchronous negotiation including Fast

SCSI and Ultra SCSI (Fast-20)

Supports multiple host adapters

Supports Disconnect/Reselect

Allows multiple and non-contiguous LUN support

Supports dynamic interrupt mapping

Supports scatter/gather

Wide device support

Supports SCSI pass-through functionality

Supports tagged command queuing

Supports request concatenation

Multiprocessor support

6

The Symbios Logic SDMS C8xx driver for SCO

UnixWare operating systems is available on a 3.5 inch floppy diskette labeled SDMS PCI UnixWare (2.x). Use this diskette to load the driver during the installation of

6-2 Symbios Logic PCI SDMS User’s Guide

Device Drivers for UnixWare

Introduction

the operating system, or to access the devices on the SCSI bus after a UnixWare installation. The following sections describe these procedures.

In addition, for SCO UnixWare 2.1 and later, the Host

Adapter diskette contains the C8xx driver for use during initial installation of SCO UnixWare. If you have both the

C8xx driver directly from Symbios Logic and also the driver bundled with the UnixWare Operating System, use the latest release of the C8xx driver.

Symbios Logic PCI SDMS User’s Guide 6-3

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

Installing Your SDMS

UnixWare Driver

Installing the Driver

During UnixWare

Installation

6

When performing the UnixWare installation, if the computer is set up to boot from the SCSI bus through a

Symbios Logic 53C8xx chipset, the driver is automatically linked statically with the kernel to suit the setup. You must follow the instructions in the UnixWare Installation

Handbook before installing the driver.

1

Boot the computer using the Install diskette delivered with the UnixWare Operating System distribution package.

2

Follow the instructions on the screen.

3

Insert the SDMS PCI UnixWare driver diskette when prompted to insert the Host Adapter diskette and press Enter.

When the driver is loaded, a message “C8xx driver is loaded” appears on the screen.

If you want to install other host adapter drivers, then insert the IHV HBA diskette provided with the

UnixWare distribution package and press Enter.

4

Follow instructions on the screen or refer to the

UnixWare Installation Handbook to complete the installation.

NOTE:

During the installation, if the driver does not find a hard disk on which to install the operating system, it aborts the process.

6

6-4 Symbios Logic PCI SDMS User’s Guide

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

5

At the end of the installation you might see a prompt to reinsert the driver diskette. Insert the SDMS PCI

UnixWare driver diskette and press Enter.

The kernel is rebuilt and the system gets ready to boot from the SCSI disk drive.

6

Remove the driver diskette when prompted to do so and reboot the system.

Updating UnixWare

2.xx With the C8xx

Driver

6

You may install the C8xx driver on a system currently running UnixWare by using one of three different procedures. The method to use depends on the setup of your system and on whether you want the system to remain running during this process. By reviewing the following questions, you can determine which procedure to follow.

Is your Boot disk a SCSI hard disk on the SCSI bus connected to a Symbios Logic 53C8xx chipset?

If the answer is yes, then you MUST statically link the kernel and reboot the system. Follow the instructions in sections:

Loading the Package

Configure for Statically Linked driver

Rebuild the UnixWare Kernel

Do you need or desire to install the driver without halting the system?

If the answer is yes then you want to install the driver as a dynamically loadable driver. Follow instructions in sections:

Loading the Package.

Configure for Dynamically Loadable driver

Symbios Logic PCI SDMS User’s Guide 6-5

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

Loading Loadable module.

If the answer is no to the above questions then follow instructions in sections:

Loading the Package.

Rebuild the UnixWare Kernel

Loading the Package

Before you install the C8xx driver, make a backup copy of the existing kernel. To do so:

6

1

Log on as root.

2

At the shell prompt type cp /stand/unix /stand/unix.good

Use this copy of the old kernel to reboot the system if the driver installation fails. Refer to the later section titled

Troubleshooting for more information.

3

Once the old kernel is saved, insert the SDMS PCI

UnixWare driver diskette.

4

Load the driver using the pkgadd command as follows: pkgadd -d diskette1

5

Select C8xx and press Enter. The C8xx driver gets loaded on the system.

6

The system prompts you again to load the driver even if loading was successful. Type q (quit) and Enter.

6-6 Symbios Logic PCI SDMS User’s Guide

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

7

Verify that the driver is now listed and loaded successfully by typing: pkginfo c8xx

8

The package information should look like this: system c8xx Symbios Logic IHV HBA

Configure for Statically Linked Driver

1

Make a backup copy of the C8xx system configuration file as follows:

6 cd /etc/conf/sdevice.d

cp c8xx /tmp/c8xx.sys

2

Check if System file configured is static. If the file contains the line “$static” it is configured for static link. To look at this file type the following command: cat c8xx

3

If the System file does not contain the text “$static” on the line immediately following the “$version” line, add it using a text editor. Do not include the double quotes.

Configure for Dynamically Loadable Driver

6

1

Make a backup copy of the C8xx system configuration file as follows: cd /etc/conf/sdevice.d

cp c8xx /tmp/c8xx.sys

Symbios Logic PCI SDMS User’s Guide 6-7

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

2

Remove the “$static” line from the C8xx file using a text editor, or by typing the following commands: grep -v '$static' c8xx > /tmp/c8xx.tmp

mv /tmp/c8xx.tmp c8xx

3

Configure the loadable driver into the system as follows:

/etc/conf/bin/idbuild -M c8xx

Loading Loadable Module

1

Once the loadable driver is configured into the system, your driver is ready to load into the running system using the modadmin command as follows:

6 modadmin -l c8xx

NOTE:

When the driver is loaded, it scans the SCSI bus and displays the devices found on it. An integer module-id used to identify the C8xx driver is displayed on the screen when loading completes.

2

To access the devices on the SCSI bus, create the entries into the device table using pdi commands as follows: cd /etc/scsi

./pdimkdev -ifS

./pdimkdtab -ifS

The system is now ready to use.

6-8 Symbios Logic PCI SDMS User’s Guide

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver

Rebuild the UnixWare Kernel

1

Reboot the system. When the C8xx package is loaded it sets a system flag to automatically rebuild the kernel upon the next system boot. To reboot, type the following commands:

6 cd / init 6

During the boot process the driver scans the SCSI bus and lists the devices found on it. If the kernel panics during boot, then reboot the system with the saved copy of the old kernel. Booting from the saved copy of the kernel is described in the following section titled

Troubleshooting. If the reboot is successful, the system is ready to use.

Troubleshooting

6

DRIVER INSTALLATION FAILS

a

Replace the system UNIX with the backup copy you created before attempting to install the C8xx host adapter driver. To perform this task, reboot the system.

b

Wait for the “Booting UnixWare ...” prompt and the subsequent beep, then press the space bar key to begin an interactive boot session.

c

When the [boot#] prompt is displayed, type:

KERNEL=unix.good

go

Symbios Logic PCI SDMS User’s Guide 6-9

Device Drivers for UnixWare

Installing Your SDMS UnixWare Driver d

The Operating System logo and “Booting

UnixWare...” reappears. Then the system starts booting from the unix kernel you specified in the previous step.

6-10 Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for NetWare

Symbios Logic PCI SDMS User’s Guide

Chapter 7

Device Drivers for NetWare

Introduction

Symbios Logic NWPA Driver

NWPA Features

NWPA Description

NWPA ASPI Support

Installing Your NWPA NetWare Drivers

Preparing Your System for NWPA Drivers

7-4

7-4

For An Existing Installation Of NetWare With Symbios

Logic DDFS NetWare Drivers Installed 7-5

For NetWare 4.11 New Installations 7-6

Reconfiguring Driver Options 7-7

For NetWare 4.11 SFT-III Installations

Reconfiguring Driver Options

7-8

7-8

NWPA Command Line Options

Information Options

Using the Help Mode Option

Using the Verbose Mode Option

7-10

7-10

7-10

7-11

NetWare NWPA Driver Customizable Options 7-11

Using the Slot Option 7-11

Using the Tagged Queuing Option 7-12

7-1

7-1

7-1

7-2

7-3

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for NetWare

Using the Queue Tag Type Option

Using the Synchronous SCSI Option

7-12

7-13

Using the Fast-20 (Ultra SCSI) Synchronous SCSI

Option 7-13

Using the Wide SCSI Option

Using the Elevator Threshold Option

Using the Scatter-Gather Option

Using the LUNs Option

7-14

7-14

7-15

7-15

Important Additional NWPA Information

For Information Pertaining to a Specific NWPA

Driver

DOS Access Dependencies

Supported DOS Configurations

When Using the 3.XX BIOS

When Using the 4.XX BIOS

When Using ASPI8XX.SYS

Supported DOS Drivers

ASPI8XX.SYS

SYMCD.SYS

MSCDEX.EXE

SYMDISK.SYS

When Using No SDMS BIOS

7-17

7-17

7-17

7-18

7-18

7-18

7-19

7-19

7-19

7-19

7-19

7-20

7-20

Symbios Logic DDFS Drivers

DDFS Features

DDFS Description

DDFS ASPI Support

7-21

7-21

7-22

7-22

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers 7-23

For An Existing Installation Of NetWare With SDMS

Drivers Installed 7-23

For NetWare v3.12 New Installations

For NetWare v4.xx New Installations

For NetWare v4.1x SFT-III Installations

For NetWare v4.1x NWOS2 Installations

7-24

7-25

7-27

7-27

DDFS Command Line Options

Using the Verbose Mode Option

Using the Help Mode Option

Using the Tagged Queuing Option

Using the Depth of Queue Tags Option

Using the Queue Tag Type Option

Using the Base Time-Out Option

Using the Sorting of Read Requests Option

Using the Shared Interrupts Option

Using the Wide SCSI Option

7-32

7-33

Using the Number of Error Recovery Retries

Option

Using the Logging of SCSI Errors Option

Using the Exclusion of Devices Option

7-33

7-34

7-35

Using the Maximum Block Size for Concatenation

Option 7-36

Using the Maximum Host Adapters Option

Using the Maximum SCSI IDs Option

Using the Maximum LUNs Option

7-37

7-37

7-38

7-28

7-28

7-29

7-29

7-30

7-31

7-31

7-32

The Power Management Utilities Used With DDFS 7-39

Installing the Power Management Utilities 7-40

Using the PMMAKE.NLM Utility

Using the PMSCHED.NLM Utility

7-40

7-42

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for NetWare

Manual Operation

Scheduled Operation

Unloading the PMSCHED.NLM Utility

Device Statistics

7-42

7-43

7-43

7-43

Important Additional DDFS Information 7-45

For Information Pertaining to a Specific Driver 7-45

About Memory Allocation 7-45

Optimal Use of DDFS Command Line Options 7-46

Peripheral Device Dependent Optimizations 7-46

Flexibility 7-46

Overall System Timing

DOS Access Dependencies

7-47

7-47

Supported DOS Configurations

When Using An SDMS 3.XX BIOS

Supported DOS Drivers

ASPI8XX.SYS

SYMCD.SYS

MSCDEX.EXE

DOS Drivers Not Supported

When Using An SDMS 4.XX BIOS

Default Configuration

NVRAM

Supported DOS Drivers

When Using No SDMS BIOS

7-50

7-50

7-50

7-50

7-48

7-48

7-48

7-48

7-49

7-49

7-49

7-49

Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

7

Introduction

Introduction

This chapter consists of two main sections:

Symbios Logic NWPA driver for the Novell

NetWare operating system.

Symbios Logic DDFS drivers for the Novell

Netware operating system.

7

NWPA Features

Symbios Logic NWPA Driver

7

The Symbios Logic NWPA driver for the Novell NetWare operating system allows you to utilize a Symbios Logic

SCSI controller or processor, controlled by a Symbios

Logic SCSI BIOS, with NetWare. The Symbios Logic

NWPA software, coupled with a Symbios Logic SCSI controller or processor and Novell or third party Custom

Device Modules (CDMs), provide a SCSI solution within the NetWare environment.

A single driver is provided for the Novell NetWare 4.11 environment. This document explains how to install and use the Symbios Logic NWPA SCSI Host Adapter

Module (HAM) driver for NetWare.

7

Provides synchronous negotiation, including Fast,

Ultra SCSI (Fast-20), and Ultra2 SCSI (Fast-40)

Supports multiple host adapters

Symbios Logic PCI SDMS User’s Guide

7 -1

Device Drivers for NetWare

Symbios Logic NWPA Driver

Supports multiple logical unit numbers (LUNS) with

Novell’s ‘/lun’ switch

Large LUN support (larger than 7.844 GBytes)

Supports Disconnect/Reselect

Supports scatter-gather

Supports tagged command queuing

Supports simple and ordered queue tags

Supports shared interrupts

Supports Wide SCSI (single-ended and differential)

Supports NetWare 4.11 SFT-III

Supports SDMS 4.XX BIOS

Supports SDMS 3.XX BIOS with ASPI8XX.SYS

Supports SDMS 4.XX DOS drivers

Handles target initiated negotiation (wide and synchronous)

In conjunction with Novell software:

Supports the ASPI interface via Novell’s

NWASPI.NLM

Support for SCSI CD-ROM devices via Novell’s

SCSICD.CDM

Support for removable media devices including SCSI

MagnetoOptical, and Bernoulli devices via Novell’s

SCSIMO.CDM

Support for SCSI-2 Tape devices via Novell’s

SCSI2TP.CDM

Note:

Other third party CDMs may also support these devices.

NWPA Description

7

The Symbios Logic NWPA solution consists of the device driver, SYM8XXNW.HAM, and a NetWare 4.XX installation file SYM8XXNW.DDI. SYM8XXNW.HAM

7-2 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Symbios Logic NWPA Driver

is an NWPA Host Adapter Module (HAM). In order to support SCSI devices, you must load the HAM module in conjunction with a SCSI Custom Device Module

(CDM). Novell has developed generic CDMs to support

SCSI-2 Hard Drives, SCSI CD-ROM devices, SCSI

Magneto Optical devices, SCSI tape devices, and SCSI changer devices. In addition, third party vendors are developing CDMs to support their specific devices.

NWPA ASPI Support

7

NWPA ASPI support is provided via Novell’s NWASPI driver. NetWare, or third party applications, may use this interface to communicate with a SCSI device attached to a Symbios Logic controller, including SCSI-2 tape devices.

Symbios Logic PCI SDMS User’s Guide 7-3

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

Installing Your NWPA

NetWare Drivers

Preparing Your

System for NWPA

Drivers

Install NetWare as described in the Novell NetWare

Installation Manual. The following information is provided to assist in the installation.

You must load the Symbios Logic NWPA NetWare driver once, for each Symbios Logic controller present in the system.

7

The Symbios Logic NWPA driver, SYM8XXNW.HAM, does not support the older Symbios Logic 3.XX DOS drivers (DOSCAM.SYS, MINICAM.SYS,

CDROM.SYS, and SCSIDISK.SYS). Both the 3.XX

BIOS (version 3.07.00) and 4.XX BIOS (version 4.02.02 or later) are supported, but we recommended that you use the 4.XX BIOS, if possible. If you are using the 3.XX

BIOS, then you must also load ASPI8XX.SYS.

The following DOS drivers are supported:

ASPI8XX.SYS

SYMCD.SYS

SYMDISK.SYS

To Upgrade BIOS (Boot ROM) from 3.XX to 4.XX:

1

Load FLASH8X5.EXE

2

Select the BIOS file 8XX_32.ROM or

8XX_64.ROM. You must use BIOS version 4.02.02 or later.

7

7-4 Symbios Logic PCI SDMS User’s Guide

To Update DOS drivers:

1

Edit CONFIG.SYS.

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

2

If any of the following lines appear, delete them:

DEVICE=<path>\DOSCAM.SYS

DEVICE=<path>\MINICAM.SYS

DEVICE=<path>\CDROM.SYS /d:<name>

DEVICE=<path>\SCSIDISK.SYS

3

If CD-ROM support is required, then add the following:

DEVICE=<path>\ASPI8XX.SYS

DEVICE=<path>\SYMCD.SYS /d:<name>

For An Existing

Installation Of

NetWare With

Symbios Logic DDFS

NetWare Drivers

Installed

7

If you currently have Symbios Logic DDFS NetWare drivers (SDMSNETx.DSK and optionally

NETASPIx.NLM) installed on your system, then you must replace these files with SYM8XXNW.HAM.

1

Change to the directory where NetWare files are installed. This is NWSERVER for NetWare 4.11.

2

Copy the files in the NWPA subdirectory on the distribution disk to the NetWare directory on your hard drive.

3

Edit STARTUP.NCF (and/or AUTOEXEC.NCF if the SDMS drivers are loaded in AUTOEXEC.NCF).

Delete any lines referring to SDMSNETx.DSK and/or NETASPIx.NLM.

Symbios Logic PCI SDMS User’s Guide 7-5

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

4

Add one load line per Symbios Logic controller or host adapter present in the system, of the form:

LOAD SYM8XXNW.HAM SLOT=<slot no>

<options>

Note:

The SLOT option is required for any load instance. To determine the slot numbers for the controllers or host adapters configured in your system, manually load the driver, without a SLOT= option. You are prompted with the slot numbers which are applicable to each Symbios Logic HA/controller detected.

For NetWare 4.11 New

Installations

7

1

Begin the file server installation according to the instructions in the file server installation chapter in the

Novell NetWare Installation Manual.

2

When the NetWare installation procedure prompts you for a Disk Driver, insert the Symbios Logic device drivers diskette into drive a: or b:. Then use the INS key to select an unlisted driver. A dialog box appears.

If you are installing the driver from the a: drive, press

Enter to continue. If you are installing the driver from the b: drive, press F3 (to specify the path to search for the driver), and enter the drive letter:

B:

The SYM8XXNW.HAM driver should appear as a selection. Select the driver.

3

Next you are prompted with the available command line options to load the driver. A description of each option appears in the box at the bottom of the

7-6 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

installation screen. A more detailed description is also given later in this document, in the section titled

Command Line Options. Select any options needed for your particular installation.

4

Load a separate instance of the driver for every

Symbios Logic controller or host adapter present in the system.

5

When prompted for a slot number, accept the slot numbers displayed. Make sure to write these slot numbers down.

6

When asked to edit the STARTUP.NCF file, make sure SYM8XXNW.HAM is loaded once per Symbios

Logic controller or host adapter present in the system.

Add a SLOT=<slot no> to each load line in the

STARTUP.NCF, specifying the slot numbers written down in 5), one per load instance.

Reconfiguring Driver

Options

7

To reconfigure driver options, you must follow these steps:

1

Unload the driver.

UNLOAD SYM8XXNW.HAM

This unloads all instances of the driver.

2

Reload each instance of the driver with the desired option settings.

LOAD SYM8XXNW.HAM SLOT=<slot no> <options>

Symbios Logic PCI SDMS User’s Guide 7-7

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

3

If the changes made to the load options of one or more load instance are permanent, and the driver is loaded automatically at server boot time, you must specify these options in the startup.ncf or autoexec.ncf file.

For NetWare 4.11

SFT-III Installations

7

1

Install your primary server following procedures for the native 4.11 installation.

2

Begin the SFT-III installation as instructed by

NetWare installation procedures.

3

While installing the secondary server, you have the option of copying the SYM8XXNW.HAM driver from the primary server. Press F10 to accept.

Reconfiguring Driver

Options

7

To reconfigure driver options, you must follow these steps:

1

Unload the driver.

UNLOAD SYM8XXNW.HAM

This unloads all instances of the driver.

2

Reload each instance of the driver with the desired option settings.

LOAD SYM8XXNW.HAM SLOT=<slot no> <options>

7-8 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Installing Your NWPA NetWare Drivers

3

If the changes made to the load options of one or more load instance are permanent, and the driver is loaded automatically at server boot time, you must specify these options in the startup.ncf or autoexec.ncf file.

Symbios Logic PCI SDMS User’s Guide 7-9

Device Drivers for NetWare

NWPA Command Line Options

NWPA Command Line

Options

The SYM8XXNW.HAM driver has many tuning parameters. Following is a list of tuning parameters available, including the default option and a list of valid options. Following each parameter is a description of when to use a parameter, and any impact its use may have on your system.

If an option is specified but the assignment is not valid, then the default value is used.

The options described below are used by placing the specified characters on the load command line for the

NWPA driver. For example, if the Verbose Mode command line option is desired the load command line should look like this: load SYM8XXNW.HAM verbose=enable

IMPORTANT: No spaces are allowed in specifying these command line options. Spaces are required between different command line options.

7

Information Options

7

Using the Help Mode Option

Command line option:

-?

or

-h

Function: Display the options available in the driver.

7

7-10 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

NWPA Command Line Options

Possible Impact: The driver will not load with

-?

or

-h specified.

This option is specified on the command line for a brief description of each of the options available in the driver, as well as valid values for each option. If the -? or -h option is specified along with other options, the help screen is invoked, the other options are ignored, and the driver is not loaded.

Using the Verbose Mode Option

Command line option: verbose=<option>

Default value: disable

Valid options: enable, disable

Function: Display the current settings of all driver options.

This option shows all the command line option settings for this load of the driver.

7

NetWare NWPA

Driver Customizable

Options

7

Using the Slot Option

Command line option: slot=<option>

Default value: None

Valid options: 0-10099

Function: Specify the slot instance number of the

Symbios Logic controller the load instance applies to.

7

Symbios Logic PCI SDMS User’s Guide 7-11

Device Drivers for NetWare

NWPA Command Line Options

Possible Impact: This information may not be known to the user at load / install time.

The slot option specifies which Symbios Logic controller

(embedded chip or host adapter) the current load pertains to. This information is required to load the driver. If this information is not specified on the load line, the driver prompts for the slot number.

Using the Tagged Queuing Option

Command line option: qtags=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/disable tagged queuing for the devices.

Possible Impact: Tagged queuing may result in improved

I/O throughput in devices that support such an option.

Enabling this option results in the driver issuing tagged

I/O requests to the devices that support tagged queuing.

Devices that do not support tagged queuing are not issued tagged requests. Depending on the drive controller, throughput of the device is increased by the use of queue tags. However, the optimal number of queue tags is based on the specific device type.

7

Using the Queue Tag Type Option

Command line option: qtag_type=<option>

Default value: ordered

Valid options: simple, ordered

Function: Specify the type of tagged commands the device is issued.

7

7-12 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

NWPA Command Line Options

Possible Impact: Ordered type is required for certain devices to avoid I/O starvation.

This option is valid only when tagged queuing (qtags) is enabled, which it is by default. Simple qtags are typically the preferred tag type. It is sometimes necessary to use ordered tags on certain devices to avoid I/O starvation under extremely heavy I/O loads such as a NetWare remirror process.

Using the Synchronous SCSI Option

Command line option: sync=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/Disable support of synchronous SCSI.

Possible Impact: No synchronous SCSI support available.

This option allows the user to enable/disable support of synchronous SCSI data transfers. Synchronous data transfers increase the I/O performance of a system, but there are a few non SCSI compliant devices which cause problems on a system.

7

Using the Fast-20 (Ultra SCSI) Synchronous

SCSI Option

Command line option: Fast20=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/Disable support of Ultra (Fast-20)

SCSI or faster synchronous data transfers.

7

Symbios Logic PCI SDMS User’s Guide 7-13

Device Drivers for NetWare

NWPA Command Line Options

Possible Impact: No Ultra (Fast-20) or Ultra2 (Fast-40) sync SCSI support available.

This option allows the user to enable/disable support of

Ultra (Fast-20) and Ultra2 (Fast-40) synchronous SCSI data transfers when using a Ultra or Ultra2 SCSI controller. If this option is disabled, and synchronous data transfer (sync) is enabled, the controller performs up to

10 Mega transfers/sec with any device capable of synchronous negotiations.

Using the Wide SCSI Option

Command line option: wide=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/Disable support of wide SCSI.

Possible Impact: No wide SCSI support available.

This option allows the user to disable support of wide

SCSI when using a wide SCSI controller. Set this option to ‘disable’ if a wide SCSI device is present on the system, but a narrow SCSI cable is connected somewhere on the bus between the wide SCSI host adapter and the wide device, thus prohibiting the transfer of wide data. If this option is set to ‘disable’ the wide device still works, but all data transferred to or from the device is narrow (8 bit).

The driver does not initiate a wide SCSI transfer request negotiation.

7

Using the Elevator Threshold Option

Command line option: elev=<option>

Default value: 7

Valid options: 0-250, or disable

7

7-14 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

NWPA Command Line Options

Function: Specify the maximum number of I/Os the

HAM should queue before allowing NWPA to filter and organize requests.

Possible Impact: You may affect performance by varying the elevator threshold value.

Elevator queues are used by NWPA to determine how many I/Os are queued to the HAM before organizing requests and generating scatter gather lists. If this number is set too low, adapter I/O starvation may result. If the number is too high, then sorting of I/Os and/or generation of scatter gather lists may not occur.

Using the Scatter-Gather Option

Command line option: sg=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/Disable the HAM’s acceptance of scatter gather lists from NWPA.

Possible Impact: You may affect performance by enabling/ disabling this option.

Scatter-Gather lists allow the driver to more efficiently transfer.

7

Using the LUNs Option

Command line option: luns=<option>

Default value: 32

Valid options: 1-32

Function: Specify the number of LUNs the host adapter/ controller should scan for per SCSI id.

7

Symbios Logic PCI SDMS User’s Guide 7-15

Device Drivers for NetWare

NWPA Command Line Options

Possible Impact: Provides multi-LUN support via Novell generic CDMs. Can cause problems if non SCSI-2 compliant devices are present on the bus.

Limits the maximum number of LUNs that will be supported for each SCSI target device. To support more than one lun, the Netware ‘/lun’ switch must also be used.

The ‘/lun’ switch will notify the generic CDM’s which are provided by Novell, to scan all luns on all devices (i.e., luns 0-31). It is left to the user to insure that all devices on the bus are capable of properly accepting inquiries to each

LUN scanned. Note that the default value for version

2.01 of SYM8XXNW.HAM was ‘luns=1’, while the default value is now ‘luns=32’ for versions 2.02 and later.

For example, to limit the scan to the first 8 luns, you would use: ‘/lun luns=8’ on the command line when loading the driver. To limit the scan to only lun 0, no command line option is needed. To scan all luns, you would use: ‘/lun’ on the command line when loading the driver.

7-16 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Important Additional NWPA Information

Important Additional NWPA

Information

7

For Information

Pertaining to a

Specific NWPA Driver

7

This document addresses options available on the

Symbios Logic NWPA NetWare driver, versions 2.02.00 or later. For information pertaining to a specific driver, please do one of the following:

For NetWare version 4.11, consult the

SYM8XXNW.DDI file for options available for

SYM8XXNW.HAM. This is accessed via the

NetWare install utility.

Load the driver specifying the -? option on the command line of the SYM8XXNW.HAM driver. The driver does not actually load, but available options are displayed.

DOS Access

Dependencies

7

NetWare sometimes requires access to the DOS partition

(perhaps to load a file, or to down the system). The

SYM8XXNW.HAM driver supports several SDMS DOS configurations.

SYM8XXNW.HAM detects whether an SDMS 3.XX or

4.XX BIOS is present. It also detects if the SDMS 4.XX

DOS driver ASPI8XX.SYS is loaded. If you are using the

SDMS 3.XX BIOS, then ASPI8XX.SYS must also be loaded.

Note:

SYM8XXNW.HAM does not support the SDMS

3.XX DOS drivers (DOSCAM, MINICAM).

If there are DOS partitions present on any device connected to a Symbios Logic controller, the SDMS

Symbios Logic PCI SDMS User’s Guide 7-17

Device Drivers for NetWare

Important Additional NWPA Information

3.XX or 4.XX BIOS and/or SDMS ASPI8XX DOS driver is required for DOS support. The BIOS is either integrated into the system BIOS or resides with the controller itself.

Supported DOS

Configurations

7

The following are the DOS configurations supported by the SYM8XXNW.HAM driver:

3.XX BIOS, ASPI8XX.SYS*

4.XX BIOS, No DOS Drivers

4.XX BIOS, ASPI8XX.SYS*

No SDMS BIOS, ASPI8XX.SYS*

In addition to ASPI8XX.SYS, you may optionally load SYMCD.SYS and/or SYMDISK.SYS for DOS

CD-ROM and DOS MO support, respectively. An optional driver for CD-ROM support (SYMCD.SYS) works with these drivers in conjunction with

MSCDEX.EXE. SYMCD.SYS and SYMDISK.SYS are NOT required for CD-ROM or MO support under NetWare.

When Using the 3.XX

BIOS

7

If the 3.XX BIOS is present, you must load

ASPI8XX.SYS in the CONFIG.SYS file.

When Using the 4.XX

BIOS

7

If you are using a version of the 4.XX BIOS that supports non-volatile memory (NVM), you must disable SCAM on all Symbios host adapters via the config utility. If there is no NVRAM present, then any SCAM devices must be set to fixed IDs so that SCAM always assigns those IDs.

7-18 Symbios Logic PCI SDMS User’s Guide

When Using

ASPI8XX.SYS

Device Drivers for NetWare

Important Additional NWPA Information

7

If you are using ASPI8XX.SYS, you must disable SCAM when ASPI8XX.SYS is loaded on the command line. If you are using ASPI8XX.SYS with the 4.XX BIOS, you must first disable SCAM using the 4.XX config utility so that ASPI8XX.SYS accepts the /SCAM=OFF switch. For example in config.sys, use the following: device=c:\symbios\aspi8xx.sys /SCAM=OFF<>

Supported DOS Drivers

The SDMS 3.XX BIOS and SDMS 4.XX BIOS are both supported by the SDMS 4.XX ASPI8XX DOS driver.

Support for CD-ROM and MO devices under DOS is provided by SYMCD.SYS and SYMDISK.SYS, respectively. Neither SYMCD.SYS nor SYMDISK.SYS are required for NetWare support of CD-ROM and MO devices. The following is a list of DOS drivers currently supported by the SYM8XXNW.HAM driver:

7

ASPI8XX.SYS

ASPI8XX provides an interface which allows for support of non disk devices, and for

DOS support of multiple Symbios Logic controllers.

ASPI8XX is not required for NetWare support if you are not using the 3.XX BIOS. It is required for NetWare installation, if you are using a SCSI CD-ROM device that is attached to a Symbios Logic controller.

7

SYMCD.SYS

To install the NetWare operating system from CD-ROM, you must load this driver with

ASPI8XX.SYS. Once the NetWare operating system installation is complete, CDROM.SYS is not needed.

The NetWare NWPA environment provides support for

SCSI CD-ROMs under NetWare.

7

MSCDEX.EXE

This driver (provided with DOS) is

7 required in conjunction with SYMCD.SYS to install

NetWare from a CD-ROM. Due to a bug in

Symbios Logic PCI SDMS User’s Guide 7-19

Device Drivers for NetWare

Important Additional NWPA Information

MSCDEX.EXE, the name assigned to the CD-ROM device does not match the base name of any file installed from the CD-ROM. A recommended name to assign to the CD-ROM device is MSCD001.

SYMDISK.SYS

The SYMDISK.SYS driver provides support for removable media devices under

DOS. While you may load this driver in the DOS environment, it is not required for NetWare support of these devices.

7

Note:

The NetWare drivers can function independently of any DOS drivers, with the following exceptions:

1

The installation of NetWare from a SCSI CD-ROM.

2

If you are using a 3.XX BIOS.

When Using No

SDMS BIOS

7

The SYM8XXNW.HAM driver operates properly on a system when no SDMS BIOS or SDMS DOS drivers are present. In this case, DOS must reside on a device which is not connected to a Symbios Logic controller based host adapter. As an example, DOS could reside on an IDE drive.

7-20 Symbios Logic PCI SDMS User’s Guide

DDFS Features

Device Drivers for NetWare

Symbios Logic DDFS Drivers

Symbios Logic DDFS Drivers

7

The Symbios Logic DDFS drivers for the Novell Netware operating system allow you to utilize a Symbios Logic

SCSI controller or processor, controlled by a Symbios

Logic SCSI BIOS, with NetWare. The DDSF software, coupled with a Symbios Logic SCSI controller or processor, provides a SCSI solution within the NetWare environment.

Separate drivers are provided for Novell NetWare v3.12, and Novell NetWare version 4.xx. The following information explains how to install and use the DDFS

SCSI drivers for NetWare.

7

Supports the ASPI interface

Provides synchronous negotiation including Fast and

Ultra (Fast-20) SCSI

Supports multiple host adapters

Supports multiple logical unit numbers (LUN)

Large LUN support (larger than 7.844 GBytes) for devices with dedicated NetWare partitions and volumes

Supports Disconnect/Reselect

Supports scatter-gather

Supports tagged command queuing

Supports ordered queue tags

Allows shared interrupts

Supports Wide SCSI (single-ended and differential)

Supports device exclusion

Symbios Logic PCI SDMS User’s Guide 7-21

Device Drivers for NetWare

Symbios Logic DDFS Drivers

Supports NW4.10 SFT-III

Supports target initiated negotiation (wide and synchronous)

Displays SCSI Additional Sense Code & Qualifier bytes

Support for removable media devices including CD-

ROM, Magneto Optical, and Bernoulli devices

Supports retries on non-sequential access devices

Extensive error reporting and handling for multi-

LUN RAID support

Supports 3.XX BIOS

Supports 4.XX BIOS and ASPI drivers

Power management supported via PMSCHED(a power management utility)

DDFS Description

7

There is a separate DDFS device driver and ASPI manager for each of two major releases of NetWare. For

NetWare v3.12, the SDMS device driver is

SDMSNET3.DSK, and the file NETASPI3.NLM is loaded if support for the ASPI interface is desired (this is required for devices such as tape drives). For NetWare v4.xx, the SDMS device driver is SDMSNET4.DSK, and the file NETASPI4.NLM is loaded if support for the

ASPI interface is desired.

DDFS ASPI Support

7

The Symbios Logic ASPI interface is provided by the

NETASPIx.NLM drivers. NetWare, or third party applications, may use this interface to communicate with any SCSI-2 device attached to a Symbios Logic controller, including SCSI-2 tape devices.

7-22 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers

Installing Your DDFS NetWare

Drivers

7

Install NetWare as described in the Novell NetWare

Installation Manual. The following information is provided to assist in the installation.

You can load these drivers only once. If changes are required (to reconfigure the driver options), you must remove the drivers and reload them with the new option settings. If these changes are permanent, and the drivers load automatically at server boot time, you must specify these options in the startup.ncf or autoexec.ncf file.

For An Existing

Installation Of

NetWare With SDMS

Drivers Installed

7

If your current SDMS NetWare drivers are version

3.05.00 or older, they are named NCRSDMSx.DSK and

ASPICAMx.NLM. Replace the NCRSDMSx.DSK and

ASPICAMx.NLM drivers with the ones supplied on the new Symbios Logic device drivers diskette.

If you intend the driver to auto load on NetWare boot, it is necessary to edit the startup.ncf or autoexec.ncf file and replace the line: with

LOAD NCRSDMSx.DSK <options>

LOAD SDMSNETx.DSK <options> where x is the version of NetWare you are using, and

<options> are the command line options (if any) you intend to use.

Symbios Logic PCI SDMS User’s Guide 7-23

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers

If your current SDMS NetWare drivers are version

3.06.00 or newer, they are named SDMSNETx.DSK and

NETASPIx.NLM. Replace the SDMSNETx.DSK and

NETASPIx.NLM drivers with the ones supplied on the new Symbios Logic device drivers diskette.

No other actions are required to use these new drivers.

You may want to review the command line options to insure you are using the best options for your configuration.

For NetWare v3.12

New Installations

7

Note:

The SDMSNET3.DSK driver should work on a

NetWare 3.11 server. However, this compatibility is neither tested nor supported.

1

Create a directory in which to install the NetWare file server. Change to that directory and copy all the files from the NetWare system disks into that directory.

2

Copy the file SDMSNET3.DSK from the Symbios

Logic device drivers diskette into this directory. If

ASPI support is desired, also copy NETASPI3.NLM.

3

To start NetWare and continue the installation, type:

SERVER

4

When prompted, enter the name of the file server and network (IPX) number. See the chapter on file server installation in the NetWare Installation Manual for restrictions and further information.

5

At the NetWare prompt, type:

LOAD SDMSNET3 <options>

7-24 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers

This command loads the main driver. Without this command, NetWare is unable to access the hard disk drive. If ASPI support is desired, also type:

LOAD NETASPI3

6

To bring up the Installation menu, at the NetWare prompt type:

LOAD INSTALL

Continue with the installation according to the file server installation chapter in the Novell NetWare

Installation Manual.

7

At the Available System Options menu, select the

EDIT STARTUP.NCF option and check to see that the line LOAD SDMSNET3 is in the file. If not, add this line to the file. This eliminates the need to load drivers by hand every time the system is powered up.

If the line appears more than once, remove the duplicate statements and all references to

“port=xxxx”, “slot=xxxx” and/or “mem=xxxx”.

8

In addition, if ASPI support is required, add the line: load NETASPI3.NLM to the file after the line: load SDMSNET3.DSK

For NetWare v4.xx

New Installations

7

1

Begin the file server installation as per the instructions in the file server installation chapter in the Novell

NetWare Installation Manual.

Symbios Logic PCI SDMS User’s Guide 7-25

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers

2

When the NetWare installation procedure prompts you for a disk driver, insert the Symbios Logic device drivers diskette into drive a: or b:. Then use the INS key to select an unlisted driver. A dialog box appears.

If you are installing the driver from the a: drive, press

Enter to continue. If you are installing the driver from the b: drive, press F3 (to specify the path to search for the driver), and enter the drive letter:

B:

The SDMSNET4.DSK driver should appear as a selection. Select the driver.

3

Next you are prompted with the available command line options to load the driver. A description of each option appears in the box at the bottom of the installation screen. A more detailed description is also given later in this document, in the section titled

Command Line Options. Select any options needed for your particular installation.

4

When asked to edit the STARTUP.NCF file, make sure SDMSNET4 is loaded only once. If present, remove the “port=xxxx slot=xxxx mem=xxxx” options from the command line.

5

After the installation is complete, if ASPI support is also desired, down the server and copy the

NETASPI4.NLM file to the appropriate server directory. For NetWare 4.0x systems this directory is

SERVER.40 by default. For NetWare 4.1x systems this directory is NWSERVER by default.

Edit the startup.ncf file and add the line: load NETASPI4.NLM

7-26 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Installing Your DDFS NetWare Drivers

to the file after the line: load SDMSNET4.DSK

For NetWare v4.1x

SFT-III Installations

7

1

Install your primary server following procedures for native 4.1x installations.

2

Begin the SFT-III installation as instructed by

NetWare installation procedures.

3

While installing the secondary server, you have the option of copying the SDMSNET4.DSK driver from the primary server. Press F10 to accept.

4

If ASPI support is required for the secondary server, down the system after completing the SFT-III installation.

Copy the NETASPI4.NLM file from the device drivers diskette to the NWSERVER directory on the secondary server.

Edit the IOSTART.NCF file on both servers by adding the line: load NETASPI4.NLM

to the files after the line: load SDMSNET4.DSK

For NetWare v4.1x

NWOS2 Installations

7

This is not a supported configuration.

Symbios Logic PCI SDMS User’s Guide 7-27

Device Drivers for NetWare

DDFS Command Line Options

DDFS Command Line

Options

The SDMSNET3.DSK and SDMSNET4.DSK drivers have many tuning parameters. Following is a list of tuning parameters available, including the default option and a list of valid options. Following each parameter is a description of when to use a parameter, and any impact its use/disuse might incur.

If an option is specified but the assignment is not valid, then the default value is used. The SDMSNET3.DSK and SDMSNET4.DSK drivers are referred to in the remainder of this section as SDMSNETx.DSK, where x refers to the appropriate NetWare operating system version.

The options described below are used by placing the specified characters on the load command line for the

SDMS driver. For example, if the Verbose Mode command line option is desired in NetWare 3.1X, the load command line should look like this: load SDMSNET3 -v

IMPORTANT:

No spaces are allowed in specifying these command line options. Spaces are required between different command line options.

Using the Verbose Mode Option

Command line option: -v

7

7

7-28 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

DDFS Command Line Options

Function: Display the current settings of all driver options.

This option shows all the command line option settings for this load of the driver.

Using the Help Mode Option

Command line option: -? or -h

Function: Display the options available in the driver.

Possible Impact: The driver will not load with -? or -h specified.

This option is specified on the command line for a brief description of each of the options available in the driver, as well as valid values for each option. If the -? or -h option is specified along with other options, the help screen is invoked, the other options are ignored, and the driver is not loaded.

7

Using the Tagged Queuing Option

Command line option: qtags=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/disable tagged queuing for the devices.

Possible Impact: Tagged queuing may result in improved

I/O throughput in devices that support such an option.

Enabling this option results in the driver issuing tagged

IO requests to the devices that support tagged queuing.

Devices that do not support tagged queuing are not issued tagged requests. Depending on the drive controller, throughput of the device is increased by the use of queue

7

Symbios Logic PCI SDMS User’s Guide 7-29

Device Drivers for NetWare

DDFS Command Line Options

tags. However, the optimal number of queue tags is based on the specific device type.

Using the Depth of Queue Tags Option

Command line option: qdepth=<option>

Default value: 10

Valid options: 0-128

Function: Set the depth of the queue for tagged queuing.

This value designates the depth of the queue per LUN

(I_T_L nexus). That is, this value designates the depth of the queue per device, or per LUN, if a device has multiple

LUNs.

Possible Impact: Used to optimize the performance of tagged queuing.

This option is valid only when tagged queuing (qtags) is enabled, which it is by default. Values possible for this parameter range from 0 to 128. 0 is equivalent to qtags=disable. While the actual depth of the queue depends on the specific drive controller. For single drives, values of about 10-30 are typically optimal. Sometimes a greater number is optimal for peripherals such as disk arrays. You should experiment with various qdepth values to determine the optimal performance for their particular setup. The optimal qdepth value is based on different aspects of the system, including but not limited to: the processor, the available memory, the disk drives, and other peripherals.

7

Note:

The driver supports a maximum of 128 qtags per controller at a given time. The driver may allocate fewer qtags per device if this limit is being reached.

7-30 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

DDFS Command Line Options

Using the Queue Tag Type Option

Command line option: qtag_type=<option>

Default value: simple

Valid options: simple, ordered

Function: Specify the type of tagged commands the device is issued.

Possible Impact: Ordered type is required for certain devices to avoid IO starvation.

This option is valid only when tagged queuing (qtags) is enabled, which it is by default. Simple qtags are typically the preferred tag type. It is sometimes necessary to use ordered tags on certain devices to avoid IO starvation under extremely heavy IO loads such as a NetWare remirror process.

7

Using the Base Time-Out Option

Command line option: timeout=<option>

Default value: 30

Valid options: Any integer value 30 to 999999999

Function: Specify the minimum value (in seconds) for command time-out.

Possible Impact: Insure system integrity when using a slow device.

If a device is slow, you should increase this value to insure the device has adequate time to respond to a command issued to it before the command times out.

7

Symbios Logic PCI SDMS User’s Guide 7-31

Device Drivers for NetWare

DDFS Command Line Options

Using the Sorting of Read Requests Option

Command line option: sort=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/disable sorting of read commands to be issued to devices.

Possible Impact: Enabling normally yields increased performance based on the target device controller.

If the devices connected to a host adapter are of a nonbuffered architecture, such as the Symbios Logic 6298 disk array, then sorting of reads may result in a performance degradation, since the absence of cache provides no benefit for sorted requests. In this instance you should disable the sort option. On most disk drives, an on-board cache allows for reading ahead of data, and by sorting read requests, the probabilities of achieving a cache hit are greatly increased, thus increasing the overall performance of the driver.

7

Using the Shared Interrupts Option

Command line option: shared_int=<option>

Default value: disable

Valid options: enable, disable

Function: Support shared interrupts.

Possible Impact: Enabling may cause a performance degradation.

You should enable the shared interrupt option any time a

PCI card other than a Symbios Logic controller is added to a system which assigns all PCI cards the same interrupt

7

7-32 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

DDFS Command Line Options

value. The added card must support shared interrupts.

The driver automatically handles the case of more than one Symbios Logic host adapter sharing an interrupt.

Using the Wide SCSI Option

Command line option: wide=<option>

Default value: enable

Valid options: enable, disable

Function: Enable/Disable support of wide SCSI.

Possible Impact: No wide SCSI support available.

This option allows the user to disable support of wide

SCSI when using a wide SCSI controller. Set this option to “disable” if a wide SCSI device is present on the system, but a narrow SCSI cable is connected somewhere on the bus between the wide SCSI host adapter and the wide device, thus prohibiting the transfer of wide data. If this option is set to “disable”, the wide device still works, but all data transferred to/from the device is narrow (8 bit). The driver does not initiate a wide SCSI transfer request negotiation.

7

Using the Number of Error Recovery Retries

Option

Command line option: max_retry=<option>

Default value: 5

Valid options: 0-50

Function: Set the maximum limit on the number of times to retry an IO on a non-sequential access device in the event of a SCSI error condition.

7

Symbios Logic PCI SDMS User’s Guide 7-33

Device Drivers for NetWare

DDFS Command Line Options

Possible Impact: Setting this to 0 prevents the driver from retrying an IO in the event of an error.

If SCSI error conditions occur on a non-sequential access device, the driver retries an IO operation the set number of times before giving up and returning the IO to the caller with a failed status. Possible callers are NetWare or an application via the CAM or ASPI interface. If this option is set to 0, IOs are not retried in the event of an error condition.

Note:

Some SCSI error conditions (such as DATA

PROTECT or ILLEGAL REQUEST) do not warrant a retry. Such conditions are reported but not retried, even for positive values of max_retry.

Using the Logging of SCSI Errors Option

Command line option: Log_ScsiErrors=<option>

Default value: Both

Valid options: Off/Console/Syslog/Both

Function: Specify where to log serious SCSI errors.

Possible Impact: Changing this option may result in loss of this information.

If SCSI error conditions occur, the driver normally attempts to log a SCSI Error Report describing the event to both the console and the system log file

SYS:SYSTEM\SYS$LOG.ERR. This information is valuable in determining when a device is having problems.

It can indicate when a device is beginning to fail, providing an opportunity to replace the device before complete failure. With this option you can choose to specify where these messages are logged: Console - the server console only; Syslog - the system error log; Both -

7

7-34 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

DDFS Command Line Options

both the server console and the system error log; or Off - the error messages are not logged anywhere.

Note:

This option affects the logging of serious SCSI errors only. Non-SCSI errors are still logged to both the console and system error log.

Using the Exclusion of Devices Option

Command line option: xcl=<device>[:device ...]

Default value: All devices recognized by the driver, i.e., no devices are excluded.

Valid options: p,i,l

(You may specify multiple devices with a colon separator) where p is the Path designator, and is in the range 0 -7, i is the SCSI ID designator, and is in the range 0 -31, l is the

LUN designator, and in the range 0 -7. The LUN parameter is optional. You may exclude multiple devices so long as the string does not exceed 35 characters in length and devices are separated by colons.

Examples: xcl=1,2,3 to exclude LUN 3 of the device at

SCSI ID 2 on Path 1. xcl=1,2,3:2,5 to exclude LUN 3 of the device at SCSI ID 2 on Path 1, and all LUNs on the device at SCSI ID 5 on Path 2.

Function: Allows for specifying that the driver not recognize certain devices.

Possible Impact: Cannot directly access devices via the

SDMSNETx.DSK driver.

This option is available to exclude recognition and direct access of specific devices by the SDMSNETx.DSK drivers. These excluded devices are not registered with the operating system for use by the driver. Other applications/drivers can then take over the control of such

7

Symbios Logic PCI SDMS User’s Guide 7-35

Device Drivers for NetWare

DDFS Command Line Options

devices. This option is available for support of third party vendors who write their own SCSI control applications.

You may exclude a maximum of five devices.

Using the Maximum Block Size for

Concatenation Option

Command line option: max_kb=<option>

Default value: 32767

Valid options: 0-32767

Function: Set the maximum number of KB written to disk at one time.

Possible Impact: A high number may result in more data transferred in a single data phase.

Specify the maximum size block in Kilobytes which is written to disk in one data transfer phase. This ensures that when requests are concatenated, the maximum size of the concatenated request does not exceed the specified value. If individual requests are greater than this specified value, no action is taken.

7

Note:

The following three options affect the amount of memory used by the driver. For information on how memory is allocated by the driver, and to get an approximate feel for the amount of memory which is saved by invoking these parameters, refer to Memory

Allocation under Important Additional Information at the end of this section. If the product of max_hbas * max_id * max_lun is small (less than 100), system performance may suffer. These values determine the number of IO buffers allocated by the driver. Allocation of too few may degrade performance.

7-36 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

DDFS Command Line Options

Using the Maximum Host Adapters Option

Command line option: max_hbas=<option>

Default value: 8

Valid options: 1-8

Function: Specify the maximum number of host adapters to support.

Possible Impact: If number is reduced, it may allow for reduction in the memory used by the driver. Reduction may also result in performance degradation.

This parameter is used to optimize the use of dynamically allocated memory by the driver. If your system has less than 8 Symbios Logic based PCI host adapters, including any Symbios PCI-SCSI controllers designed into the main board, this parameter allows you to reduce the total memory used for the driver.

7

Using the Maximum SCSI IDs Option

Command line option: max_id=<option>

Default value: 32

Valid options: 8-32

Function: Specify the maximum number of SCSI IDs each host adapter board should support.

Possible Impact: If number is reduced, may allow for reduction in memory used by the driver. Reduction may also result in performance degradation.

This parameter is used to optimize the use of dynamically allocated memory by the driver. If all the host adapters, including any SCSI controllers on the main board are connected to less than 31 devices, you can reduce the size

7

Symbios Logic PCI SDMS User’s Guide 7-37

Device Drivers for NetWare

DDFS Command Line Options

of the dynamically allocated memory by setting this value to the maximum number of devices on any of the SCSI controllers.

Using the Maximum LUNs Option

Command line option: max_lun=<option>

Default value: 4

Valid options: 1-8

Function: Specify the maximum number of LUNs each host adapter board should support per SCSI id.

Possible Impact: If number is reduced, may allow for reduction in memory used by the driver. Reduction may also result in performance degradation.

Use this parameter to optimize the use of dynamically allocated memory by the driver. If less than 8 LUNs are used per Symbios Logic based PCI host adapter SCSI id, this parameter allows a reduction in the total memory used for the driver.

7

7-38 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

The Power Management

Utilities Used With DDFS

7

Power management support for NetWare is provided by two NLMs, PMMAKE.NLM and PMSCHED.NLM.

Use one or both of these NLMs to activate power management of disk devices registered with the Netware operating system through the SDMSNETx.DSK driver.

PMSCHED.NLM allows manual control of power management to individual devices, while

PMMAKE.NLM allows creation of a schedule for power management. You must not load these two utilities at the same time. If you plan to use power management regularly, you can have PMSCHED.NLM load from the

AUTOEXEC.NCF file.

SDMS power management is supported only on disk devices. Some disk devices do not support power management. If such a device is detected, PMSCHED indicates the device is not power manageable. Command line options for the PMMAKE.NLM and

PMSCHED.NLM utilities are described in this document.

Note:

Power management of disk devices connected to

Symbios Logic 8XX controllers and handled by

SDMSNETx.DSK is NOT supported in the NetWare

4.10 SFT-III environment.

Symbios Logic PCI SDMS User’s Guide 7-39

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

Installing the Power

Management Utilities

7

Follow these steps to install the Power Management

Utilities.

1

Copy PMMAKE.NLM and PMSCHED.NLM to the

SYS:\SYSTEM directory of the NetWare server.

2

Create a subdirectory called SYS:\PM. This is the directory in which the schedule text and configuration files should reside.

Using the

PMMAKE.NLM

Utility

7

The PMMAKE.NLM utility is used to compile a power management schedule file from a standard text file, which you can create using the NetWare EDIT utility, or some other editor. Place the text file in the SYS:\PM directory on the server. The format for this text file is given below.

The syntax for the line that loads the PMMAKE utility is: load PMMAKE <input filename> [<output filename>] where

<input filename> is the full path name of the text file containing the power management scheduling directives. If the path is not specified, the NetWare search path is used.

<output filename> is the full path name of the output configuration (CFG) file produced. If the output file name is not specified, the output file produced is named PM.CFG, located in the SYS:\PM directory.

The format for the PMMAKE input (text) file is:

!<DAY INDICATOR>

BEGIN, <START TIME>, <DELAY TIME>, <DEVICE LIST>

END, <STOP TIME>, <DELAY TIME>, <DEVICE LIST>

7-40 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

where

DAY INDICATOR = SUN, MON, TUE, WED,

THR, FRI, SAT

START TIME = 24 hour time format: 00:00 - 23:59

STOP TIME = 24 hour time format: 00:00 - 23:59

DELAY TIME = Time to wait during no activity on a device before spinning it down, in seconds 1 - 3600

DEVICE LIST = ALL or <DEVICE ID>

[, <DEVICE ID> ...]

DEVICE ID = BXXIXXLXX

BXX identifies the bus

IXX identifies the SCSI ID

LXX identifies the LUN (if zero you can omit)

You may omit bus identifiers after the first one. It is assumed that multiple sequential directives are on the same day until another day is specified. It is assumed that future devices are on the same bus until a new bus id is specified.

For example: B00I01L01, I02, I03, I04, B01I00, I01,I02 specifies

Devices ID 01 LUN 01, ID 2, ID 3, ID 4 on Bus 0

Devices ID 0, ID1, ID 2 on Bus 1

Here is a PMMAKE sample input file:

!SUN

BEGIN, 00:00, 10, ALL

END, 23:59, 10, ALL

!MON

BEGIN, 00:00, 10, ALL

END, 06:00, 10, B00I00

END, 06:30, 10, B00I01

Symbios Logic PCI SDMS User’s Guide 7-41

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

BEGIN, 18:00, 10, ALL

END, 23:59, 10, ALL

!FRI

BEGIN, 00:00, 10, ALL

END, 06:00, 10, B00I00

END, 06:30, 10, B00I01

BEGIN, 17:30, 10, B00I01

BEGIN, 18:00, 10, B00I00

END, 23:59, 10, ALL

!SAT

BEGIN, 00:00, 10, ALL

END, 23:59, 10, ALL

Using the

PMSCHED.NLM

Utility

You must load the PMSCHED.NLM utility to activate power management for devices controlled by the

SDMSNETx.DSK driver.

7

The syntax for the line that loads the PMMAKE utility is: load PMSCHED [<schedule file>] where

<schedule file> is the name of the power management configuration file to use. If no file is specified,

PMSCHED looks for SYS:\PM\PM.CFG. If

PM.CFG is not found, PMSCHED loads for manual operation of power management.

Manual Operation

In manual operation, power management is initially off on all devices, and gather / displaying of device statistics is on. PMSCHED.NLM allows manual enabling and disabling of power management on individual drives. You can also enable and disable statistics gathering, and clear statistics.

To toggle power management on and off for a device, highlight the device under PMSCHED.NLM and press the F3 key. A menu appears with these selections:

7

7-42 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

1

Toggle Power Management

2

Toggle Statistics

3

Reset Statistics

Highlight Toggle Power Management and press Enter.

Toggling Power Management has no effect on the device statistics.

Scheduled Operation

Automatic scheduling of power management cycles is possible only when PMSCHED remains loaded. For scheduled operation, PMSCHED.NLM requires either: the file SYS:\PM\PM.CFG, created by

PMMAKE.NLM, or the name of the schedule file, created by

PMMAKE.NLM, loaded with PMSCHED as a command line parameter.

7

Unloading the PMSCHED.NLM Utility

Unloading PMSCHED.NLM does not turn power management off. The state of power management on each device is maintained until the server is downed or

PMSCHED.NLM is reloaded.

7

Device Statistics

Device statistics are gathered on all devices registered by

SDMSNETx.DSK with the NetWare operating system.

These statistics record the number of reads and writes performed on a device and, if the device is power manageable by the SDMS driver, the number of times the

7

Symbios Logic PCI SDMS User’s Guide 7-43

Device Drivers for NetWare

The Power Management Utilities Used With DDFS

device is spun up and spun down. Statistics are viewed, toggled on and off, or reset from the power management utility PMSCHED.NLM.

7-44 Symbios Logic PCI SDMS User’s Guide

For Information

Pertaining to a

Specific Driver

About Memory

Allocation

Device Drivers for NetWare

Important Additional DDFS Information

Important Additional DDFS

Information

7

7

This document addresses options available on the

Symbios Logic DDFS NetWare drivers, version 3.06.00.

For information pertaining to a specific driver, please do one of the following:

For NetWare version 4.XX, consult the

SDMSNET4.DDI file for options available for

SDMSNET4.DSK. This is accessed via the NetWare install utility.

For versions of the driver 3.05.00 and later, use the -? option on the command line of the

SDMSNETx.DSK driver

7

The driver allocates memory for certain structures based upon the maximum number of SCSI IDs (max_id),

LUNs (max_lun), and paths (max_hbas) that are used in the system. The amount of memory allocated is based on the following formula: 414 bytes of memory are allocated for the structure, so

Memory Allocated = 414 * max_hbas * max_lun * max_id.

So for default allocations, the amount of memory allocated is:

Memory Allocated = 414 * 8 * 4 * 32 = 423,936 bytes

(414 KB).

If, for example, only one host adapter is installed (or when using a Symbios Logic based PCI SCSI embedded

Symbios Logic PCI SDMS User’s Guide 7-45

Device Drivers for NetWare

Important Additional DDFS Information

controller and no add-in host adapters), only one LUN per device is used, and the bus is narrow (up to 8 SCSI

IDs), then by setting the appropriate command line options, the amount of memory allocated is:

Memory Allocated = 414 * 1 * 1 * 8 = 3,312 bytes (3.4

KB).

Optimal Use of DDFS

Command Line

Options

7

Peripheral Device Dependent Optimizations

7

Some devices support SCSI tagged queue commands very efficiently, while others show a significant loss of performance when the number of queued requests exceed a certain value. (qtags, qdepth, qtag_type)

Most disk drives have an onboard read cache that is used by the drive controller to read ahead data. The driver may take advantage of this cache by maximizing the cache hits and ensuring a higher data transfer rate. However, there are devices that do not have an on board cache, and implementation of the sorting algorithm results in greater processing overhead and loss of overall performance.

(sort)

Devices differ in their response times to requests. To ensure that the driver can handle devices with various response times, an option to tune the time-out value is available. (timeout)

Flexibility

In order to allow flexibility in controlling devices in a system, an option is provided to determine which devices the driver needs to exclude from taking over control. This allows independent software vendors to provide value

7

7-46 Symbios Logic PCI SDMS User’s Guide

DOS Access

Dependencies

Device Drivers for NetWare

Important Additional DDFS Information

added applications to directly control certain devices through the ASPI or CAM interface. (xcl)

Serious SCSI errors are logged to both the console and system error log by default. If a device is going bad, these errors may provide forewarning to replace the device before complete failure. However, you may turn off the logging of these errors to either or both of these locations.

(Log_ScsiErrors)

For embedded systems, or other systems with fixed configurations, you can limit the amount of dynamically allocated memory by choosing to set maximum limits on the number of host adapters, devices, and logical units to support. The number of allocated buffers for processing

IOs is reduced, which could adversely affect performance.

(max_hbas, max_id, max_lun)

Overall System Timing

A driver designed for a networked file server environment has to optimize performance in tandem with the other components of the system. To avoid monopoly on the I/O bus, you can configure the size of the blocks for transfer across the SCSI bus. This ensures that other components get fair access to the I/O bus. (max_kb)

7

7

NetWare sometimes requires access to the DOS partition

(perhaps to load a file, or to down the system). The

SDMSNETx.DSK driver supports several SDMS DOS configurations.

SDMSNETx.DSK detects whether an SDMS 3.XX or

4.XX BIOS is present on the system in addition to the

Symbios Logic ASPI8XX.SYS driver.

If there are DOS partitions present on any device connected to a Symbios Logic controller, an SDMS 3.XX

Symbios Logic PCI SDMS User’s Guide 7-47

Device Drivers for NetWare

Important Additional DDFS Information

BIOS or 4.XX BIOS is required for DOS support. The

BIOS is either integrated into the system BIOS or resides with the controller itself.

Supported DOS

Configurations

7

The following are the DOS configurations supported by the SDMSNETx.DSK driver:

3.XX BIOS, ASPI8XX.SYS

4.XX BIOS, ASPI8XX.SYS

3.XX BIOS, ASPI8XX.SYS, SYMCD.SYS,

MSCDEX.EXE

4.XX BIOS, ASPI8XX.SYS, SYMCD.SYS,

MSCDEX.EXE

3.XX BIOS, No DOS Drivers

4.XX BIOS, No DOS Drivers

When Using An

SDMS 3.XX BIOS

7

If an SDMS 3.XX BIOS is present, you may load an optional Symbios Logic ASPI driver (ASPI8XX.SYS) in the CONFIG.SYS file. An optional driver for CD-ROM support (SYMCD.SYS) works with these drivers in conjunction with MSCDEX.EXE.

Supported DOS Drivers

The SDMS NetWare drivers in a 3.XX BIOS environment only support ASPI8XX configurations. The following is a list of DOS drivers currently supported by the SDMSNETx.DSK driver:

7

ASPI8XX.SYS

The DOS ASPI Manager interface,

ASPI8XX.SYS DOS driver in conjunction with the

SDMSNETx.DSK driver is currently the only supported

7

DOS ASPI configuration in a Netware environment.

7-48 Symbios Logic PCI SDMS User’s Guide

Device Drivers for NetWare

Important Additional DDFS Information

SYMCD.SYS

The SYMCD.SYS driver is an ASPI based CD-ROM driver. It requires the ASPI8xx.SYS driver to be loaded.

7

MSCDEX.EXE

This driver (provided with DOS) is

7 required in conjunction with SYMCD.SYS to install

NetWare from a CD-ROM. Due to a bug in

MSCDEX.EXE, the name assigned to the CD-ROM device not match the base name of any file installed from the CD-ROM. A recommended name to assign to the

CD-ROM device is MSCD001.

Note:

The NetWare drivers can function independently of any DOS drivers, with the exception of installation of

NetWare from CD-ROM. Performance is impacted on

DOS accesses, but if memory is premium, this option is available.

DOS Drivers Not Supported

The following SDMS DOS drivers are not supported in the NetWare Environment.

7

ASPICAM.SYS

SCSIDISK.SYS

SYMDISK.SYS

DOSCAM.SYS

MINICAM.SYS

CDROM.SYS

When Using An

SDMS 4.XX BIOS

7

The SDMS 4.XX BIOS supports two different configurations, default Boot configuration and NVRAM configuration. Both configurations are supported.

Symbios Logic PCI SDMS User’s Guide 7-49

Device Drivers for NetWare

Important Additional DDFS Information

Default Configuration

In default boot configuration, the 4.XX BIOS supports up to two Symbios Logic 8XX controllers. Disk devices are supported by the BIOS. Other SCSI devices are not supported without additional DOS drivers.

7

NVRAM

If NVRAM is present on a controller with a 4.XX BIOS, the SDMSNETx.DSK NetWare drivers use the on-board parameters to configure the Symbios Logic 8XX controllers.

7

Supported DOS Drivers

Currently only the ASPI8XX.SYS driver is supported in a

NetWare configuration utilizing a 4.XX BIOS.

7

When Using No

SDMS BIOS

7

The SDMSNETx.DSK driver operates properly on a system when no SDMS BIOS is present. In this case,

DOS must reside on a device which is not connected to a

Symbios Logic controller based host adapter. As an example, DOS could reside on an IDE drive.

7-50 Symbios Logic PCI SDMS User’s Guide

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for Windows NT

Chapter 8

Device Drivers for Windows

NT

Introduction for Windows NT 3.5x/4.x

Features

Description

Installing Your SYMC8XX.SYS Driver

Preparing a Symbios Driver Diskette

New System Installation

Existing System Installation

Windows NT 4.x

Windows NT 3.5x

Disk Mirroring

Command Line Options

Troubleshooting

8-1

8-2

8-3

8-4

8-4

8-4

8-6

8-6

8-7

8-9

8-11

8-11

Symbios Logic PCI SDMS User’s Guide

Table of Contents

Device Drivers for Windows NT

Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows NT

8

Introduction for Windows NT 3.5x/4.x

Introduction for Windows NT

3.5x/4.x

8

Windows NT 3.5x/4.x is an operating system designed to run on processors using current technology. It provides a graphical user interface environment incorporating many high-level features (refer to the Microsoft Windows NT

3.5x/4.x documentation for details). I/O requests in

Windows NT 3.5x/4.x are handled by an I/O manager. To address a SCSI peripheral, the I/O manager goes through the appropriate drivers. Class drivers for hard disk, floptical, CD-ROM, printer, and scanner peripherals are provided in Windows NT 3.5x/4.x. Other class drivers, provided by peripheral manufacturers, may be added to support new devices. Tape device support is built into the operating system itself and does not require a class driver.

Symbios Logic/Microsoft provide a miniport driver, called SYMC8XX.SYS, to complete the path to a

Symbios Logic controller or processor with an optional

SDMS SCSI BIOS. The following sections describe this driver and its installation.

Symbios Logic PCI SDMS User’s Guide

8 -1

Device Drivers for Windows NT

Introduction for Windows NT 3.5x/4.x

Figure 8-1

8

SCSI I/O Flow in Windows NT

WINDOWS NT

DISK

CLASS DRIVER

WINDOWS NT

CD_ROM

CLASS DRIVER

WINDOWS NT

OTHER

CLASS DRIVER

WINDOWS NT

PORT DRIVER

SDMS MINIPORT DRIVER

Symbios Logic SCSI Chip

Features

8

Synchronous negotiation (including Fast/Ultra SCSI)

Wide negotiation

Tagged command queuing

Supports multiple host adapters

Supports multiple Logical Unit Numbers (LUNs)

Disconnect/Reselect

Scatter-Gather

Differential support

Supports SCSI pass-through functionality

BUS device reset

Scan order change (scans the bus from SCSI ID 0 to

MAX SCSI ID [7 or 15])

Supports disk array configurations with no LUN 0

Supports disk array configurations with noncontiguous LUNs

8-2 Symbios Logic PCI SDMS User’s Guide

Description

Device Drivers for Windows NT

Introduction for Windows NT 3.5x/4.x

Ultra SCSI (Fast 20) support (20 MB/s narrow, 40

MB/s wide)

Target initiated negotiation support

Auto request sense

Renegotiation of wide/sync parameters on request sense commands

Maximum 256K block size support

Full NVRAM support (wide/sync parameters, SCSI

ID)

8

SYMC8XX.SYS is designed to Microsoft's specification for miniport drivers. This driver allows connection of

SCSI devices including disk drives, CD-ROMs, and tape drives for PCI-based machines. To support a new SCSI device the Windows NT 3.5x/4.x architecture requires that a class driver for that type device be present (usually supplied by Microsoft, or possibly by the peripheral manufacturer). No changes to SYMC8XX.SYS are required. This driver is only supported under Windows

NT 3.5 and later versions (including NT 4.0). It does not run under earlier versions of NT.

SCSI commands are passed directly from a Windows application to the SCSI devices by using the SCSI passthrough facility (refer to the Microsoft Windows NT

3.5x/4.x documentation for details). This facility allows applications to directly control and access SCSI devices by filling in a data structure and calling in to the port driver.

The SYMC8XX.SYS driver supports Ultra SCSI protocol, providing twice the raw data transfer rate of Fast

SCSI for disk drives and Symbios Logic host adapters that support Ultra SCSI. However, Ultra SCSI requires more stringent SCSI bus cabling setups than Fast SCSI.

Symbios Logic PCI SDMS User’s Guide 8-3

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

Installing Your

SYMC8XX.SYS Driver

Preparing a Symbios

Driver Diskette

8

Copy the files listed below to the root directory of a clean floppy diskette, and use this Symbios Driver diskette during installation:

SYMC8XX.SYS

SYMC8XX.TAG

OEMSETUP.INF

TXTSETUP.OEM

New System

Installation

8

This procedure installs the SYMC8XX.SYS driver onto a

Windows NT system. Use this procedure when installing

NT onto an unused SCSI drive. NT automatically adds the driver to the registry and copies the driver to the appropriate directories.

1

Start the NT installation by booting from the

Microsoft Setup floppy disk.

2

Press Enter when the Welcome to Setup screen appears.

3

On the Setup Method screen, choose Custom Setup by pressing C. (If Express Setup is chosen, the installation program scans for SCSI adapters and finds the Symbios Logic PCI (53C810) driver

(NCRC810.SYS for NT 3.5x, SYMC810.SYS for

NT 4.0), which is an older version of the

SYMC8XX.SYS driver. Let the installation continue.

8

8-4 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

When installation completes, change the driver. To change the driver, see the “Existing System

Installation” section.)

4

Press S to skip mass storage device detection. (If

Enter is pressed, the installation program scans for

SCSI adapters and finds the Symbios Logic PCI

(53C810) driver (NCRC810.SYS for NT 3.5x,

SYMC810.SYS for NT 4.0), which is an older version of the SYMC8XX.SYS driver. Let installation continue. When the installation completes, change the driver. To change the driver, see the “Existing System

Installation” section.)

5

When a screen displays the SCSI adapters found, choose S to configure additional SCSI adapters.

6

Move the highlight bar to Other and press Enter.

7

When prompted for Manufacturer-supplied hardware support disk, insert your Symbios Driver diskette and press Enter.

8

The Symbios Logic PCI (53C8XX) Miniport driver,

Symbios Logic PCI <53C8XX>, is shown highlighted. Press Enter to proceed.

9

NT should now recognize the Miniport driver and the

SCSI hardware. Press Enter to continue.

At this point, simply follow the Microsoft Windows NT installation procedure.

Symbios Logic PCI SDMS User’s Guide 8-5

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

Existing System

Installation

8

This procedure installs the SYMC8XX.SYS driver onto an existing Windows NT system.

NOTE:

Windows NT 4.x uses the Windows 95 user interface, resulting in minor changes to the procedure for updating SCSI drivers. Procedures for both NT 4.x and

NT 3.5x are listed.

Windows NT 4.x

1

Boot NT and log on as Administrator.

8

2

Click the Start button, move to Settings, then to

Control Panel, and click.

3

Double-click on SCSI Adapters.

4

Click the Drivers tab. If NCRSDMS.SYS,

NCRC810.SYS, NCRC8XX.SYS, or

SYMC8XX.SYS drivers are listed, select the driver(s) and choose Remove before adding the new driver.

Select OK when the Remove Driver message prompts, “Are you sure you want to remove this driver?”. Another message may display saying “The

SCSI Adapter has been marked as a boot device...”.

Click OK.

5

Click Add. A list of installed adapters is displayed.

6

Click the Have Disk button.

7

When prompted, insert your Symbios Driver diskette.

For the path to the files, leave a:\ and select OK.

8-6 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

8

On the Select Manufacturer Driver menu, the

Miniport driver, Symbios Logic PCI (53C8XX), is shown highlighted. If it is not highlighted, select it.

Choose OK.

At this point, the following message may occur:

“The driver(s) for this SCSI Adapter are already on the system. Do you want to use the currently installed driver(s) or install new one(s)?”

Selecting Current uses the driver already on the system, and selecting New uses the driver on the floppy disk. Unless you want to use the older version already on the system, choose New. If you chose

Current, go to step 10.

9

For the path to the OEM SCSI Adapter files, leave a:\ and select Continue.

10 A System Settings Change message displays “You must restart your computer before the new settings take effect. Do you want to restart your computer now?” Choose OK to restart and reboot NT. If you choose Cancel, remember that you must restart before the new driver is loaded.

11 Rebooting loads your new Miniport driver.

Windows NT 3.5x

1

Boot NT and log on as Administrator.

2

Open the Main window in the Program Manager.

3

Double-click on Windows NT Setup.

8

Symbios Logic PCI SDMS User’s Guide 8-7

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

4

Choose Options, then choose Add/Remove SCSI

Adapters.... If NCRSDMS.SYS, NCRC810.SYS,

NCRC8XX.SYS, or SYMC8XX.SYS drivers are listed, select the driver(s) and choose Remove before adding the new driver. Select OK when the Setup

Message prompts, “Are you sure you want to remove the selected SCSI Adapter?”

5

Then choose Add, and select OK when the Setup

Message prompts, “Are you sure you want to add a

SCSI Adapter?”

6

On the SCSI Adapter list, go to the bottom and choose Other.

7

When prompted, insert your Symbios Driver diskette.

For the path to the files, leave a:\ and select OK.

8

On the Select OEM Option menu, the Miniport driver, Symbios Logic PCI (53C8XX), is shown highlighted. If it is not highlighted, select it. Choose

OK.

9

On the Select SCSI Adapter Option menu, choose

Install with the SYMBIOS LOGIC Inc. PCI

(53C8XX) driver highlighted.

At this point, the following message may occur:

“The driver(s) for this SCSI Adapter are already on the system. Do you want to use the currently installed driver(s) or install new one(s)?”

Selecting Current uses the driver already on the system, and selecting New uses the driver on the floppy disk. Unless you want to use the older version

8-8 Symbios Logic PCI SDMS User’s Guide

Disk Mirroring

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

already on the system, choose New. If you chose

Current, go to step 11.

10 For the path to the OEM SCSI Adapter files, leave a:\ and select Continue.

11 On the SCSI Adapter Setup menu, choose Close.

12 Rebooting loads your new Miniport driver.

8

Note:

This section only applies to Intel x86-platforms where Symbios Logic's 4.x PCI SCSI BIOS is used.

Symbios Logic's 4.x PCI SCSI BIOS loads only one image in the memory when the system boots regardless if single or multiple host bus adapters (HBAs) are used in the system. All the disk drives on any HBAs will be recognized through the INT 13h function call. Because of this implementation, disk mirroring under NT needs to be done via the following instructions which might be different from Microsoft's documentation.

Here's how to create a NT Fault Tolerance (FT) floppy so that you can boot from the mirrored partition in case the primary partition fails.

1

Format a floppy disk under NT using either Windows

Explorer or the format option in My Computer. This allows the floppy boot block to print to the NTLDR program.

2

From the root directory of the primary partition, copy

NTLDR, NTDETECT.COM, and BOOT.INI to the formatted floppy disk which will become the FT floppy.

Symbios Logic PCI SDMS User’s Guide 8-9

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

3

Temporarily remove the read-only attribute of the

BOOT.INI so that it can be modified and saved.

4

Edit BOOT.INI on the FT floppy and modify the following line where you want to boot the mirrored partition.

multi(0)disk(0)rdisk(x)partition(y)\<winnt_directory> where multi(0) and disk(0) should always remain same.

x = (the drive number of the mirrored partition in the

INT 13 chain - 80h).

The drive number of the mirrored partition can be found during system bootup of Symbios Logic's 4.x

PCI SCSI BIOS when the primary partition doesn't exist. It should say either BOOT (=80h), 81h, 82h, and higher. Therefore the value of x would be 0 when

BOOT, 1 when 81h, 2 when 82h, etc.

y = the partition number on the drive (starts at 1 which equals single partition on drive)

For example, let's say there are two Symbios Logic's

8xx HBAs in the system. The first HBA, HBA #0 which is the boot path, has two SCSI hard drives on

ID 0 and ID 5.

The second HBA, HBA #1, has two SCSI hard drives on ID 2 and ID 4. Assuming that SCSI bus scan starts from ID 0 and goes up, the drive number of INT 13h will look like this:

HBA #0, ID 0= BOOT (which is 80h)

HBA #0, ID 5= 81h

HBA #1, ID 2= 82h

HBA #1, ID 4= 83h

8-10 Symbios Logic PCI SDMS User’s Guide

Command Line

Options

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

Now NT is installed on the boot drive, HBA #0 ID 0, and a mirrored partition is established on HBA #1 ID

2. If the primary partition fails, for example due to a power failure, then the drive number of INT 13h will change:

HBA #0, ID 5= BOOT (which is 80h)

HBA #1, ID 2= 81h

HBA #1, ID 4= 82h

Therefore, the following line should be used in the

BOOT.INI to boot from the mirrored partition, HBA

#1 ID 2. Note that rdisk(1) was calculated from x=81h-80h.

multi(0)disk(0)rdisk(1)partition(1)\<winnt_directory>

5

Save the BOOT.INI and restore the read-only attribute.

8

There are no command line options with the Windows

NT device driver.

Troubleshooting

8

DURING INSTALLATION, NO SCSI DEVICES ARE

FOUND.

a

Insure that the custom setup is chosen on the Setup

Method screen.

b

Insure that all devices are powered on and terminated correctly.

c

Check that no devices have duplicate SCSI IDs.

d

Make sure INT A is assigned for the PCI slot(s) where your SCSI host adapter(s) are installed.

Symbios Logic PCI SDMS User’s Guide 8-11

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

SYSTEM CRASHES DURING INSTALLATION

WITH A MESSAGE INDICATING INACCESSIBLE

BOOT DEVICE.

a

This error is usually associated with an IRQ, DMA channel, I/O (chip) address, or BIOS address conflict.

Set the SCSI host adapter to use a different interrupt.

b

This error is sometimes caused by a virus infecting the

Master Boot Record of the boot device. Use a writeprotected DOS bootable flex containing virus scanning and cleaning software to check for any viruses on the boot device, and remove if any are found.

A DISK DRIVE IS RECOGNIZED AS SEVEN

DIFFERENT DEVICES WHEN ONLY ONE IS

PHYSICALLY CONNECTED TO THE SCSI BUS.

This error is usually caused by older SCSI devices incorrectly indicating to NT that they support multiple LUNs. Contact the device manufacturer for a firmware upgrade.

PROBLEMS WITH CERTAIN SCSI DEVICES

WHEN USING AN ULTRA SCSI ADAPTER

Some SCSI devices do not function properly when the adapter attempts to negotiate Ultra SCSI transfer rates. If a device is not operating properly, check the transfer speed setting using the PCI BIOS

Configuration Utility (press Control-C when the

Symbios Logic PCI BIOS banner is displayed during the system boot process). Devices that don't support

Ultra SCSI should be set to a maximum of 10 MB/sec for narrow (8 bits), 20 MB/sec for wide (16 bits).

8-12 Symbios Logic PCI SDMS User’s Guide

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

PROBLEMS WITH ULTRA SCSI (FAST 20)

DEVICES USING ULTRA SCSI PROTOCOL

a

If the system is configured with a Symbios Logic host adapter that supports Ultra SCSI, and an Ultra SCSI device is on the SCSI bus, intermittent problems and possible system crashes can occur if the SCSI bus cable and terminators do not conform to the Ultra

SCSI specification.

b

Disable Ultra SCSI support for all devices via the 4.x

PCI BIOS Configuration Utility (press Control-C when the Symbios Logic PCI BIOS banner is displayed during the system boot process).

c

If the system operates properly without Ultra SCSI enabled, it is highly likely that the SCSI bus cable and terminators are not configured correctly for Ultra

SCSI. See the Symbios Logic host adapter User's

Guide for information on Ultra SCSI cabling requirements.

Symbios Logic PCI SDMS User’s Guide 8-13

Device Drivers for Windows NT

Installing Your SYMC8XX.SYS Driver

8-14 Symbios Logic PCI SDMS User’s Guide

A

B

Glossary

Glossary

Active Termination The electrical connection required at each end of the SCSI bus, composed of active voltage regulation and a set of termination resistors. Ultra and

Ultra2 SCSI require active termination.

Address A specific location in memory, designated either numerically or by a symbolic name

API Application Programming Interface. A standard bridge (or specification) for which software is written, allowing the passing of information and instructions between the various parts of a computer system.

ASPI Advanced SCSI Programming Interface. A specification for a common structured method of supporting SCSI peripherals. It provides an interface between host adapters and SCSI device drivers.

Asynchronous Data Transfer One of the ways data is transferred over the SCSI bus. It is slower than synchronous data transfer.

Bernoulli box A high-capacity data storage device that uses a removable, non-volatile cartridge.

Binary code Software instructions reduced to ones and zeros that are readable by a computer.

BIOS Basic Input/Output System. Software that provides basic read/write capability. Usually kept as firmware

(ROM based). The system BIOS on the mainboard of a computer is used to boot and control the system. The

SCSI BIOS on your host adapter acts as an extension of the system BIOS.

Symbios Logic PCI SDMS User’s Guide Glossary -1

Glossary

C

Glossary-2

Bit A binary digit. The smallest unit of information a computer uses. The value of a bit (0 or 1) represents a two-way choice, such as on or off, true or false, and so on.

Boot disk A disk with all the necessary files to set the computer into operation.

Bootable solution A SCSI implementation that allows booting from a SCSI device. This requires a resident

ROM.

Bundled Drivers are distributed with the operating system by the OS vendor.

Bus A collection of unbroken signal lines across which information is transmitted from one part of a computer system to another. Connections to the bus are made via taps on the lines.

Bus Mastering A high-performance way to transfer data.

The host adapter controls the transfer of data directly to and from system memory without bothering the computer’s microprocessor. This is the fastest way for multitasking operating systems to transfer data.

Byte A unit of information consisting of eight bits.

CAM Common Access Method. A specification (API), developed by an industry committee, for a common structured method of supporting SCSI peripherals.

CD-ROM Compact Disk-Read Only Memory. An optical storage technology that uses compact disks to store up to

650 megabytes of data per disk.

Compile To translate source code written in a high-level language into object code.

Symbios Logic PCI SDMS User’s Guide

D

Glossary

Concatenated Driver A SCSI driver with a SCSI BIOS added on to it. Sacrifices SCSI drive bootability in favor of connectivity and lower cost.

Configuration Refers to the way a computer is set up; the combined hardware components (computer, monitor, key board, and peripheral devices) that make up a computer system; or the software settings that allow the hardware components to communicate with each other.

CPU Central Processing Unit. The “brain” of the computer that performs the actual computations. The term Micro Processor Unit (MPU) is also used.

Device Driver A program that allows a microprocessor

(through the operating system) to direct the operation of a peripheral device.

Differential SCSI A hardware configuration for connecting

SCSI devices. It uses a pair of lines for each signal transfer

(as opposed to single-ended SCSI which references each

SCSI signal to a common ground.)

DMA Direct Memory Access. The ability of an I/O system to transfer data to and from a memory subsystem without CPU intervention.

DMA Bus Master A feature that allows a peripheral to control the flow of data to and from system memory by blocks, as opposed to PIO (Programmed I/O) where the flow is by byte.

Driverless Solution A SCSI implementation, supported by the SCSI BIOS alone, that provides adequate features for a limited system (hard disks only).

Symbios Logic PCI SDMS User’s Guide Glossary-3

Glossary

E

F

H

Glossary-4

EISA Extended Industry Standard Architecture. An extension of the 16-bit ISA bus standard. It allows devices to perform 32-bit data transfers.

External SCSI Device A SCSI device installed outside the computer cabinet. These devices are connected in a continuous chain using specific types of shielded cables.

Fast-20 An extension of the SCSI-3 standard that expands the bandwidth of the SCSI bus, allowing faster synchronous transfer rates (approximately double).

Fast-40 The SCSI trade association (STA) supports the use of “Ultra2 SCSI” over the term “Fast-40”. Please see

Ultra2 SCSI.

Fast SCSI A standard for SCSI data transfers. It allows a transfer rate of up to 10 MBytes/sec over an 8-bit SCSI bus and up to 20 MBytes/sec over a 16-bit SCSI bus.

File A named collection of information stored on a disk.

Formatting To prepare a disk to receive information by organizing its surface into tracks and sectors.

HAB Host Adapter Board. A circuit board that provides a bus connection to a computer system.

Hard Disk A disk made of metal and permanently sealed into a drive cartridge. A hard disk can store very large amounts of information.

HBA Host Bus Adapter. An integrated circuit that supplies a bus connector to a computer system.

Host The computer system in which a SCSI host adapter is installed. It uses the SCSI host adapter to transfer information to and from devices attached to the SCSI bus.

Symbios Logic PCI SDMS User’s Guide

I

K

L

Glossary

Host Adapter A circuit board or integrated circuit that provides a SCSI bus connection to the computer system.

Internal SCSI Device A SCSI device installed inside the computer cabinet. Internal SCSI devices are connected in a continuous chain using an unshielded ribbon cable.

IRQ Interrupt Request Channel. A path through which a device can get the immediate attention of the computer’s

CPU. The PCI bus assigns an IRQ path for each SCSI host adapter.

ISA Industry Standard Architecture. A type of computer bus used in most PC’s. It allows devices to send and receive data 16-bits at a time.

KByte Kilobyte. A measure of computer storage equal to

1024 bytes.

Link To produce an executable program from compiled modules (programs, routines, libraries) by merging the object code and resolving interconnecting references.

Local Bus A way to connect peripherals directly to computer memory. It bypasses the slower ISA and EISA busses. PCI is a local bus standard.

Logical Unit A subdivision, either logical or physical, of a

SCSI device (actually the place for the device on the SCSI bus). Most devices have only one logical unit, but up to eight are allowed for each of the eight possible devices on a SCSI bus.

LUN Logical Unit Number. An identifier, zero to seven, for a logical unit.

LVDlink Low Voltage Differential Link allows greater

Ultra2 SCSI device connectability and longer SCSI

Symbios Logic PCI SDMS User’s Guide Glossary-5

Glossary

M

N

cables. LVDlink lowers the amplitude of noise reflections and allows higher transmission frequencies.

Main board A large circuit board that holds RAM, ROM, the microprocessor, custom integrated circuits, and other components that make a computer work. It also has expansion slots for host adapters and other expansion boards.

Main Memory The part of a computer’s memory which is directly accessible by the CPU (usually synonymous with

RAM).

Motherboard See Mainboard. In some countries, the term Motherboard is not appropriate.

Multi-tasking The executing of more than one command at the same time. This allows programs to operate in parallel.

Multi-threading The simultaneous accessing of data by more than one SCSI device. This increases the data transfer rate.

Network A collection of devices, such as computers and printers, that are connected together. A network is a tool for communication that allows users to store and retrieve information, share printers, and exchange information.

NVRAM Non-Volatile Random Access Memory. Actually an EEPROM (Electronically Erasable Read Only

Memory chip) used to store configuration information.

Glossary-6 Symbios Logic PCI SDMS User’s Guide

O

P

Glossary

Object code Software instructions that are compiled as an intermediate step between source code and binary code.

Operating System A program that organizes the internal activities of the computer and its peripheral devices. An operating system performs basic tasks such as moving data to and from devices, and managing information in memory. It also provides the user interface.

Parity Checking A way to verify the accuracy of data transmitted over the SCSI bus. One bit in the transfer is used to make the sum of all the 1 bits either odd or even

(for odd or even parity). If the sum is not correct, an error message appears.

Partition A logical portion of space on a hard disk designated by a drive letter.

Passive Termination The electrical connection required at each end of the SCSI bus, composed of a set of resistors.

It improves the integrity of bus signals.

PCI Peripheral Component Interconnect. A local bus specification that allows connection of peripherals directly to computer memory. It bypasses the slower ISA and

EISA busses.

Peripheral Device A piece of hardware (such as a video monitor, disk drive, printer, or CD-ROM) used with a computer and under the computer’s control. SCSI peripherals are controlled through a SCSI host adapter.

PIO Programmed Input/Output. A way the CPU can transfer data to and from memory via the computer’s I/O ports. PIO is faster than DMA, but requires CPU time.

Port Address Also Port Number. The address through which commands are sent to a host adapter. This address is assigned by the PCI bus.

Symbios Logic PCI SDMS User’s Guide Glossary-7

Glossary

Q

R

S

Glossary-8

Port Number See Port Address.

POST Power On Self Test. A set of routines stored in

ROM that test various system components before booting can proceed.

Processor A computer hardware component that performs computations directed by software commands.

Queue Tags A way to keep track of multiple commands that allows for increased throughput on the SCSI bus.

RAM Random Access Memory. The computer’s primary working memory in which program instructions and data are stored and are accessible to the CPU. Information can be written to and read from RAM. The contents of RAM are lost when the computer is turned off.

Removable media A computer data storage device in which the magnetic disk or tape is enclosed in a removable cassette or cartridge.

RISC Core Symbios Logic SCSI chips contain a RISC

(Reduced Instruction Set Computer) processor, programmed through microcode scripts.

ROM Read Only Memory. Memory from which information can be read but not changed.The contents of

ROM are not erased when the computer is turned off.

SCAM SCSI Configured AutoMatically. A method to automatically allocate SCSI IDs via software when SCAM compliant SCSI devices are attached.

Scatter/Gather A device driver feature that lets the host adapter modify a transfer data pointer so that a single host adapter transfer can access many segments of memory.

This minimizes interrupts and transfer overhead.

Symbios Logic PCI SDMS User’s Guide

Glossary

SCSI Small Computer System Interface. A specification for a high performance peripheral bus and command set.

The original standard is referred to as SCSI-1.

SCSI-2 The current SCSI specification which adds features to the original SCSI-1 standard.

SCSI Bus A host adapter and one or more SCSI peripherals connected by cables in a linear chain configuration. The host adapter may exist anywhere on the chain, allowing connection of both internal and external SCSI devices. A system may have more than one

SCSI bus by using multiple host adapters.

SCSI Device Any device that conforms to the SCSI standard and is attached to the SCSI bus by a SCSI cable.

This includes SCSI host adapters and SCSI peripherals.

SCSI ID A way to uniquely identify each SCSI device on the SCSI bus. Each SCSI bus has eight available SCSI

IDs numbered 0 through 7 (or 0 through 15 for Wide

SCSI). The host adapter usually gets ID 7 giving it priority to control the bus.

SDMS SCSI Device Management System. A Symbios

Logic software product that manages SCSI system I/O.

Single Ended SCSI A hardware specification for connecting SCSI devices. It references each SCSI signal to a common ground. This is the most common method

(as opposed to differential SCSI which uses a separate ground for each signal).

Software The entire set of programs, procedures, and related documentation associated with a computer system.

Source code Software instructions written as text in a high level programming language. It is readable by humans who know the language.

Symbios Logic PCI SDMS User’s Guide Glossary-9

Glossary

V

W

T

U

Glossary-10

Synchronous Data Transfer One of the ways data is transferred over the SCSI bus. Transfers are clocked with fixed-frequency pulses. It is faster than asynchronous data transfer, but cannot be used for certain kinds of transfers, so some negotiation is required.

System BIOS Controls the low level POST (Power On

Self Test), and basic operation of the CPU and computer system.

Tape drive A storage device designed to back up data from another storage device onto magnetic tape at a high rate of speed. Data is stored sequentially (no random access).

Ultra SCSI A standard for SCSI data transfers. It allows a transfer rate of up to 20 MB/sec over a 8-bit SCSI bus and up to 40 MB/sec over a 16-bit SCSI bus. STA (SCSI

Trade Association) supports using the term “Ultra2

SCSI” over the term “Fast-20”.

Ultra2 SCSI A standard for SCSI data transfers. It allows a transfer rate of up to 80 MB/sec over a 16-bit SCSI bus.

STA (SCSI Trade Association) supports using the term

“Ultra2 SCSI” over the term “Fast-40”.

Virtual Memory Space on a hard disk that can be used as if it were RAM.

Wide SCSI A SCSI-2 feature allowing 16 or 32-bit transfers on the SCSI bus. This dramatically increases the transfer rate over the standard 8-bit SCSI bus.

Word A two byte (or 16-bit) unit of information.

Symbios Logic PCI SDMS User’s Guide

Glossary

WORM Write Once Read Many. An optical storage device, like CD-ROM, used to permanently store data.

Symbios Logic PCI SDMS User’s Guide Glossary-11

Glossary

Glossary-12 Symbios Logic PCI SDMS User’s Guide

J13972I

0297-15MH

©1997 Symbios Logic

Printed in USA

PCI SCSI Device Management System SDMS 4.0

User’s Guide

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

Download PDF

advertisement

Table of contents