HP C2233 Manuale utente

HP C2233/C2234/C2235

3.5·inch

SCSI Disk Drives

Product Description Manual

r/i~

HEWLETT

PACKARD

Part No. xxxx-xxxx

Printed in U.S.A. October 1990

Edition

Rev 10/24/90 (Preliminary)

Manual Order Number:

xxxxx

DRAFT

10/24/90

13:31

Printing

History

This edition of the manual is a preliminary draft. This

manual will

revised without notice in order to reflect

the

latest version of

the

product it describes.

New editions are complete revisions of the manual. The

dates on the title page change only when a new edition or a

new update

published.

Many product updates

not require manual changes

and, conversely, manual corrections may be done without

accompanying product changes.

Edition

Rev 10/24/90 (Draft)

...........

October 1990

@ Copyright

1990

by Hewlett-Packard Company.

Contents

Product

Specifications

Product Description

1-1

Options . . . . . . . 1-3

Related Documentation 1-3

Specials . . . . . . . 1-4

Disk Drive Specifications 1-4

Interface

....

1-4

Seek Time . . . .

1-4

Head Switch Time 1-5

Spin-up Time . . 1-5

Rotational Latency 1-5

Internal Data Transfer Rate

(Controller/Disk) . . .

1-5

External Data Transfer Rate

(Host/Controller) . . . . 1-5

Disk Drive Capacities . . . . 1-6

Recoverable Data

Error

Rate 1-7

Unrecovereable Data

Error

Rate 1-7

Corrected Data Error Rate With Retries 1-7

Seek Error Rate . . . . . . . . . . . 1-7

Disk Speed

.......

. . . . . .

1-7

Recording Density (Flux Changes per Inch)

1-7

Track Density

1-7

Coding System . . . . . .

1-7

Power . . . . . . . .

1-8

Electromagnetic Emissions 1-10

Acoustical Noise . . .

'1-10

Safety.

. . . . . . . . . 1-10

Physical Characteristics . .

1-11

Disk Drive Environmental Requirements 1-12

DRAFT

Contents-1

10/24/90 13:12

Contents-2

Input Power Requirements

1-12

Ambient Air Temperature .

1-12

Relative Humidity

1-12

Altitude.

1-12

Shock.

1-13

Sinusoidal Vibration

1-13

Electromagnetic Susceptibility (Maximum

values) .

1-13

Electrostatic Discharge

1-13

Tilt.

1-14

Product

Installation

Introduction

2-1

Handling and Storage .

2-1

Unpacking and Re-packing the Disk Drive

2-2

Inspecting the Shipping Container

2-2

Inspecting the Disk Drive

2-2

Recording

the

Serial Number

2-2

Return Shipment

Addresses.

2-2

Vendor Purchases

2-2

Hewlett-Packard Direct Purchases

2-3

Re-Packing For Shipment .

2-3

Mounting Information

2-5

SafetyjRegulatory Considerations

2-5

Chassis Dimensions and Mounting Screw

Locations

2-5

Connector Dimensions and Locations

2-5

Physical Mounting

2-5

Airflow Requirements .

2-6

OptionjAddress Selection

2-6

Unit Attention

2-7

Synchronous Data Transfer Request

(SDTR) 2-7

Parity Option·Setting

2-7

Auto Spin

Option

2-7

Synchronized Spindle 2-7

Mode Select Command 2-8

Address Setting

2-8

DRAFT

10/24/90 13:12

DRAFT

10/24/90 13:12

Termination

Power Source Options

Terminator

Resistor Packs

Changing

Terminator

Power

Source

Disk Drive Interface Connections .

SCSI Connector . . . . . . .

Power

Connector . . . . .

Mating

Connector

Requirements

Cabling Requirements

Single-ended Cable . .

Front

Panel LED Indicator

3. Product

Features

Introduction . . .

Supported

Features.

Supported Commands

Functional Description

Disk

Format

....

Sector

Format

. . .

Addressing

Structure

Error

Correction Code

Cyclic Redundancy Check (CRC)

Track

and

Sector

Sparing

Operating Notes .

Buffer

Management

Look Ahead Reads

Assembly Descriptions

Head/Disk

Assembly

Disks

.....

Heads

.....

Actuator Assembly

Head

Interface Electronics .

Atmospheric Controls .

Vibration Isolators

Spindle Assembly

Block Diagram .

SCSI Interface .

RAM Buffer

Disk Controller

2-9

2-10

2-11

3-1

3-4

3-6

3-7

3-8

3-9

3-10

3-11

3-12

3-13

3-14

Contents-3

Contents-4

Data Encoder/Decoder

Microcontroller .

Servo Processor

Head Interface .

Actuator Driver

Servo Timing .

Spindle Motor Driver

Power Distribution .

3-14

3-15

3-16

DRAFT

10/24/90 13:12

Figures

1-1.

Disk Drive Major Components . . . .

1-2

2-1. C2233/34/35 Packaging Kit . . . . .

2-4

2-2. Disk Drive Dimensions and Mounting Hole

Locations

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

2-12

2-3.

Connector Dimensions, Single Ended Unit 2-13

2-4.

HDA Temperature Measuring Points 2-14

2-5. Interface Connectors and settings 2-15

3-1.

Disk Drive Addressing

Structure.

. 3-17

3-2.

Track Allocation . . . . . . . . . 3-18

3-3. Formatted Physical Sector Allocation 3-19

3-4.

Disk Drive Block

Diagram.

. . . . 3-20

Tables

2-1. Option Pin-Set Selections . . . . . 2-16

2-2. On-Board Terminator +5V Sources 2-17

2-3.

SCSI Connector Single-ended Pin

Assignments . . . . . . . . 2-17

2-4.

Recommended Mating Connectors 2-18

3-1.

Supported SCSI Commands . . .

3-4

DRAFT

Contents-5

10/24/90 13:12

·-

Product Specifications

Product

Description

DRAFT

10/24/90 10:54

The

C2233/34/35 single-ended SCSI interface

disk drives are reliable, low cost, high capacity, high

performance, random access mass storage devices. Each

product utilizes sputtered thin-film 3.5-inch (95 mm) disks

as storage media. Each disk has 1511 data tracks

per

data

surface. The total formatted capacities of

the

disk drives

are 234 magabytes for the 3-disk C2233, 328 megabytes for

the

4-disk C2234, and

422

megabytes for

the

5-disk C2235.

Low cost

and

high reliability are achieved

with

advanced

Digital Signal Processor (DSP) hybrid servo design

that

provides the flexibility and performance of a dedicated servo

system and the dynamic head alignment of

embedded

servo system. High capacity and improved average transfer

rate is achieved by utilizing MUltiple Zone Recording.

High performance (13 msec random average seeks) and low

power consumption are achieved with a state-of-the-art

HP-designed balanced rotary actuator.

The disk drive electrical intelface is compatible

with

the

new industry standard Small Computer System Interface

(SCSI). Figure

1-1

shows the major components of

the

disk

drive. Mounting instructions are provided

chapter

Product

Specifications

1-1

Figure 1-1. Disk Drive Major Components

WSPDM101

1·2 Product Specifications

DRAFT

10/24/90 10:54

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