Octek Quantum Viking 2.27 Product Manual

Quantum Viking 2.27/4.55 GB S

Product Manual

April 1, 1997

81-113146-02

Table of Contents

Table of Contents

Chapter 1

ABOUT THIS MANUAL 1-1

1.1 AUDIENCE DEFINITION............................................................................................................. 1-1

1.2 MANUAL ORGANIZATION........................................................................................................ 1-1

1.3 TERMINOLOGY AND CONVENTIONS...................................................................................... 1-1

1.4 REFERENCES............................................................................................................................... 1-3

Chapter 2

GENERAL DESCRIPTION 2-1

2.1 PRODUCT OVERVIEW................................................................................................................ 2-1

2.2 KEY FEATURES........................................................................................................................... 2-1

2.3 STANDARDS AND REGULATIONS .......................................................................................... 2-3

2.4 HARDWARE REQUIREMENTS .................................................................................................. 2-3

Chapter 3

INSTALLATION 3-1

3.1 SPACE REQUIREMENTS ............................................................................................................ 3-1

3.2 UNPACKING INSTRUCTIONS.................................................................................................... 3-3

3.3 HARDWARE OPTIONS............................................................................................................... 3-4

3.4 JUMPER OPTIONS ...................................................................................................................... 3-6

3.4.1 SCSI Bus Device Identification Jumpers ....................................................................... 3-6

3.4.2 SCSI Bus Termination Enable Jumper (TE) ................................................................... 3-7

3.4.3 SCSI Bus Termination Power Jumper (TP) .................................................................... 3-7

3.4.4 Wait/Spin Jumper (WAIT_SPIN) .................................................................................... 3-7

3.4.5 Spin Delay Jumper ........................................................................................................... 3-8

3.5 MOUNTING.................................................................................................................................. 3-8

3.5.1 Orientation ........................................................................................................................ 3-8

3.5.2 Mounting Screw Clearance ...........................................................................................3-11

3.5.3 Ventilation ......................................................................................................................3-12

3.6 INTERFACE CONNECTOR (J1)................................................................................................. 3-13

3.6.1 4-pin DC Power Connector (50-pin and 68-pin Connectors) ..................................3-14

3.6.2 50-pin SCSI Connector .................................................................................................. 3-14

3.6.3 68-pin SCSI Connector .................................................................................................. 3-14

3.6.4 80-pin SCSI Connector .................................................................................................. 3-15

3.6.5 J1 12-pin Auxiliary Connector (68-pin Connector) .................................................. 3-15

Chapter 4

SPECIFICATIONS 4-1

4.1 SPECIFICATION SUMMARY ..................................................................................................... 4-1

4.2 FORMATTED CAPACITY ........................................................................................................... 4-3

4.3 DATA TRANSFER RATES.......................................................................................................... 4-3

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Table of Contents

4.4 TIMING SPECIFICATIONS.......................................................................................................... 4-4

4.5 POWER ......................................................................................................................................... 4-5

4.5.1 Power Sequencing ............................................................................................................4-5

4.5.2 Power Reset Limits ...........................................................................................................4-5

4.5.3 Power Requirements .........................................................................................................4-6

4.6 ACOUSTICS.................................................................................................................................. 4-7

4.7 MECHANICAL.............................................................................................................................. 4-7

4.8 ENVIRONMENTAL CONDITIONS .............................................................................................. 4-8

4.9 SHOCK AND VIBRATION........................................................................................................... 4-8

4.10 RELIABILITY................................................................................................................................ 4-9

4.11 DISK ERRORS .............................................................................................................................. 4-9

Chapter 5

BASIC PRINCIPLES OF OPERATION 5-1

5.1 QUANTUM VIKING DRIVE MECHANISM................................................................................ 5-1

5.1.1 Base Casting Assembly ....................................................................................................5-3

5.1.2 DC Motor Assembly .........................................................................................................5-3

5.1.3 Disk Stack Assemblies .....................................................................................................5-3

5.1.4 Headstack Assembly .........................................................................................................5-4

5.1.5 Rotary Positioner Assembly ............................................................................................5-4

5.1.6 Automatic Actuator Lock ................................................................................................5-4

5.1.7 Air Filtration .....................................................................................................................5-4

5.2 DRIVE ELECTRONICS ................................................................................................................. 5-5

5.2.1 µ Controller ........................................................................................................................5-6

5.2.2 SCSI Controller .................................................................................................................5-7

5.2.3 Read/Write Channel .........................................................................................................5-9

5.2.4 PreAmplifier ....................................................................................................................5-11

5.3 SERVO SYSTEM ....................................................................................................................... 5-11

5.3.1 General Description ........................................................................................................5-11

5.3.2 Servo Burst and Track Information .............................................................................5-12

5.4 READ AND WRITE OPERATIONS .......................................................................................... 5-12

5.4.1 The Read Channel ...........................................................................................................5-12

5.4.2 The Write Channel ..........................................................................................................5-12

5.4.3 Interface Control .............................................................................................................5-13

5.5 FIRMWARE FEATURES........................................................................................................... 5-13

5.5.1 Disk Caching ...................................................................................................................5-13

5.5.2 Track and Cylinder Skewing .........................................................................................5-15

5.5.3 Error Detection and Correction .....................................................................................5-16

5.5.4 Defect Management .......................................................................................................5-21

Chapter 6

SCSI DESCRIPTION 6-1

6.1 GENERAL DESCRIPTION............................................................................................................ 6-1

6.1.1 Bus Architecture ...............................................................................................................6-1

6.1.2 Bus Transactions ...............................................................................................................6-1

6.2 LOGICAL CHARACTERISTICS OF THE SCSI BUS ................................................................... 6-2

6.2.1 Bus Phase Sequences .......................................................................................................6-2

6.2.2 Signal Restrictions Between Phases ...............................................................................6-3

Quantum Viking 2.27/4.55S iii