HP C2246 Manuale del prodotto

Printed

Recycled

Paper

C2244/45/46/47

3.5-i.nch SCSl-2 Disk Drive

Technical

Reference

Manual

Ff};.

HEWLETT

~~PACKARD

Part No. 5960-8346

Printed in U.S.A. September 1992

Edition 3

Printing

History

This manual will be revised without notice in order

reflect

the

latest version of the product

describes.

New

editions are complete revisions of the manual. The dates on

the

title page

change only when a new edition is published.

Many product updates do not require manual changes and, conversely, manual corrections

may be done without accompanying product changes.

Edition 1

..................................................................

December 1991

Edition 2

.......................................................................

April 1992

Edition 3

.................................................................

September

1992

iii

)

) v

' I

\._,!

I :

\..-./

Contents

Product

Specifications

Product

Description . .

Key

Features

. .

Interface

Options

. . .

Specials . . . . . .

Documentation

Disk Drive

Capacities

Operating

Specifications

Power

Characteristics

Environmental

RequiTements

Product

Installation

Introduction

. . . . . . . . . . .

Handling

Guidelines . . . . . . . . .

Protection

From

Mechanical Shock

Protection

from

Electrostatic

Discharge

(ESD)

Unpacking

the

Disk

Drive

. . . . . .

Inspecting

the

Shipping

Container

Inspecting

the

Disk Drive

Recording

the

Serial

Number

Disk Drive

Returns

. . . . . .

Return

Shipment

Addresses

Vendor

Purchases

. . . . .

Hewlett-Packard

Direct

Purchases

Re-Packing

For

Shipment

Mounting

Information

. . . . . . . .

Safety

/Regulatory

Compliance . . .

Chassis Dimensions

and

Mounting

Screw Locations

Physical

Mounting

....

Airflow

Requirements

. . . . . . . . .

Front

Panel

LED

Indicator

. . . . . . . . .

Address

and

Configuration

Pin-Set

Set-ups .

Drive To Interface Connections . . . .

Interface

Connectors

and

Cables

Connector

Dimensions

and

Locations

SCSI

Connector

. . . . . . . . .

Power

Connector

.....

Mating

Connector

Requirements

Cabling

Requirements

Single-ended

Cable

Differential

Cable

1-1

1-2

1-4

1-5

1-8

1-9

2-1

2-2

2-3

2-5

2-6

2-8

2-9

2-10

Contents-1

3. Product Features

Introduction

3-1

Functional Description .

3-1

Disk Format

3-1

Sector Format

3-1

Addressing Structure

3-1

Error Correction Code .

3-1

Cyclic Redundancy Check (CRC)

3-2

Track Sparing

3-2

Look Ahead Reads

3-2

Head Alignments

3-3

Head Alignment States

3-3

Head Alignment Modes 3-3

Typical Head Alignment Times . .

3-4

Command Queuing

3-4

Error Recovery

3-6

Synchronized Spindle Operation

3-6

Assembly Descriptions .

3-6

Head/Disk Assembly

3-6

Disks

3-6

Heads

3-7

Actuator and Latch Assembly

3-7

Head Interface Electronics

3-7

Atmospheric Controls

3-7

Vibration Isolators

3-7

Spindle Assembly 3-7

Block Diagram 3-8

SCSI Interface .

3-8

RAM Buffer

3-8

Disk Controller 3-8

Data

Encoder/Decoder

3-8

crocontroller

3-8

Servo Processor .

3-9

Data

Head Interface .

3-9

Actuator Driver

3-9

Servo Timing .

3-9

Spindle Motor Driver

3-9

Power Distribution

3-9

SCSI Interface

Introduction

4-1

Supported Functions 4-1

Status Byte

4-6

SCSI Message Support . 4-7

Target Error Conditions

4-8

Message Out Phase Parity Error 4-8

Command or

Data

Out Phase Parity Error . 4-8

Illegal Messages .

4-8

Reselection Timeout .

4-9

Contents

SCSI Command Descriptions

Command Descriptions

Command Details . .

Control Byte . . . .

Change Definition . . .

Format Unit . . .

Inquiry

.....

Mode Select, Mode Sense

Read

...

Read Buffer

Read Capacity . . .

Read Defect

Data

Read Long

....

Reassign Blocks . . . •

Receive Diagnostic Results .

Release

Request Sense

Reserve

Rezero Unit .

Seek

.....

Send Diagnostic

Start/Stop

Unit

Synchronize Cache

Test Unit Ready

Verify

.....

Write

.....

Write And Verify .

Write Buffer

Write Long

Write Same

B. Vendor Unique Command Descriptions

Command Descriptions

Access Log

.....

Change SCSI ID

Change Wide SCSI ID . .

Execute

Data

. .

Interface Control

Manage Primary

Media Test

.•.

Read Full

...

Read Headers

Reformat Track .

Write Full

...

A-1

A-2

A-6

A-7

A-11

A-15

A-31

A-32

A-33

A-34

A-36

A-37

A-39

A-41

A-42

A-48

A-49

A-50

A-51

A-53

A-54

A-55

A-56

A-57

A-59

A-60

A-62

A-63

B-1

B-2

B-7

B-8

B-9

B-10

B-11

B-16

B-18

B-20

B-21

B-22

Contents-3

C. Vendor Unique Status Codes

D. Reference

E. Narrow, Single--Ended Drive Configurations

Terminator Power Source Options . . . . .

F. Narrow, Differential Drive Configurations

G. Wide, Differential Drive Configurations

Index

Contents-4

E-4

Figures

1-1. Disk Drive Major Components

2-1.

Single-Unit Packaging . . . .

2-2. Ten-Unit Packaging . . . . .

3-1. Disk Drive Addressing Structure

3-2. Formatted Physical Sector Allocation

....

3-3. Disk Drive Block Diagram . . . . . . . . . . . . .

E-1. Narrow, Single-Ended: Disk Drive Dimensions and Mounting Locations

E-2. Narrow, Single-Ended: Interface, Address and Option Connectors .

E-3. Narrow, Single-Ended: Connector Dimensions . . . . . . . . . . .

E-4. Narrow, Single-Ended: Operating Temperatures . . . . . . . . . .

F-1. Narrow, Differential: Disk Drive Dimensions and Mounting Locations

F-2. Narrow, Differential: Interface, Address and Option Connectors

F-3. Narrow, Differential: Connector Dimensions .

F-4. Narrow, Differential: Operating Temperatures . . . . .

...

G-1. Wide, Differential: Disk Drive Dimensions, . . . . . . . . .

G-2. Wide, Differential: Interface, Address and Option Connectors

G-3. Wide, Differential: Connector Dimensions .

G-4. Wide, Differential: Operating Temperatures . . . . . . . .

1-3

2-3

2-4

3-10

3-13

3-14

E-1

E-2

E-5

E-6

F-1

F-2

F-4

F-5

G-1

G-2

G-4

G-5

Contents·5

Tables

1-1. HP C2244/45/46/47 SCSI Disk Drive Capacities

1-2. HP C2244/45/46/47 Operating Specifications

...

1-3. HP C2244/45/46/47 DC Power Characteristics .

1-4. HP C2244/45/46/47 Environmental Requirements

....

2-1. Address/Configuration Pin-Set Information Locations

2-2. Address/Configuration Option Descriptions

2-3. Recommended Mating Connectors

......

3-1. C2244/45/46/47 Cylinder Allocation

.....

4-1. HP C2244/45/46/47 Supported SCSI Commands .

A-1. Supported SCSI-2 Commands . . . .

B-1. Vendor Unique Commands . . . . . . .

C-1. Vendor Unique DERROR Status Codes

D-1. Reference Appendix Contents . . . .

E-1. Narrow, Single-Ended: Address and Option Connector Configurations .

E-2. Narrow, Single-Ended: On-Board Terminator Power (TermPwr) Sources .

E-3. Narrow, Single-Ended: SCSI Connector Pin Assignments . .

...

F-1. Narrow, Differential: Address and Option Connector Configurations . .

F-2. Narrow, Differential: SCSI Connector Pin Assignments

.....

G-1. Wide, Differential: Address and Option Connector Configurations .

G-2. Wide, Differential: SCSI Connector Pin Assignments . . . . . . .

1-4

1-5

1-8

1-9

2-6

2-7

2-9

3-11

4-4

A-3

B-1

C-1

D-1

E-3

E-4

E-5

F-3

F-4

G-3

G-4

' J

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