HP C2488A Product manual

HP C2486Aj88Aj90A
3.5-inch SCSI-2 Disk Drives
Technical Reference Manual
Fli;- HEWLETT
~~ PACKARD
HP Part No. xxxx-xxxx
Printed in U.S.A. September 1992
Edition 1
DRAFT 1/18/93 09:58

Printing History
This manual will be 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 is published.
Many
product updates do not require manual changes and, conversely, manual corrections
may be done
without accompanying product changes.
Edition 1
................................................................. September 1992
DRAFT
iii
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Contents
1. Product Specifications
Product Description
Key Features . .
Interface Options .
Specials .....
Related Documentation
Disk Drive Capacities .
Operating Specifications
DC Power Characteristics
Environmental Requirements
2.
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
DRAFT
Connector Dimensions and Locations
SCSI Connector ...... .
DC Power Connector
Mating Connector Requirements
Cabling Requirements
Single-ended Cable
Differential Cable .
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1-1
1-1
1-2
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1-4
1-6
1-9
1-10
2-1
2-1
2-1
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2-2
2-2
2-2
2-2
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2-2
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2-3
2-5
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2-6
2-6
2-8
2-9
2-9
2-9
2-9
2-9
2-10
2-10
2-10
Contents-1

3. Product Features
Introduction
Functional Description .
Disk
Format
Sector Format
Addressing Structure
Error Correction Code
Cyclic Redundancy Check (CRC)
Track Sparing
Look Ahead Reads
Head Alignments
Head Alignment States
Head Alignment Modes
Typical Head Alignment Times
Command Queuing
Error Recovery
Synchronized Spindle Operation
Assembly Descriptions .
Head/Disk Assembly
Disks
Heads
Actuator and Latch Assembly
Head Interface Electronics
Atmospheric Controls
Vibration Isolators
Spindle Assembly
Block Diagram
SCSI Interface
RAM Buffer
Disk Controller
Data Encoder/Decoder
Microcontroller
Servo Processor .
Data Head Interface
Actuator Driver
Servo Timing .
Spindle Motor Driver
Power Distribution
4. SCSI Interface
Introduction
Supported Functions
Status Byte
SCSI Message Support .
Target Error Conditions
Message
Out Phase Parity Error
Command or Data Out Phase Parity Error
lllegal Messages .
Reselection Timeout .
Contents-2
.-
3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-2
3-2
3-3
3-3
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3-6
3-6
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4-1
4-1
4-6
4-7
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4-8
4-8
4-8
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A. SCSI Command Descriptions
Command Descriptions A-I
Command Details . A-I
Control
Byte A-2
Change Definition.
A-6
Format Unit A-7
Inquiry
A-ll
Mode Select, -Mode Sense A-15
Read A-31
Read Buffer A-32
Read Capacity A-33
Read Defect
Data . A-34
Read Long A-36
Reassign Blocks . A-37
Receive Diagnostic Results A-39
Release A-41
Request Sense A-42
Reserve A-48
Rezero Unit A-49
Seek.
A-50
Send Diagnostic A-51
Start/Stop Unit
A-53
Synchronize Cache A-54
Test Unit Ready A-55
Verify A-56
Write
A-57
Write And Verify A-59
Write Buffer A-60
Write Long.
A-62
Write Same A-63
B. Vendor Unique
Command Descriptions
Command Descriptions B-1
Access
Log.
B-2
Change SCSI ID B-7
Change Wide SCSI ID B-8
Execute
Data.
B-9
Interface Control
B-I0
Manage Primary
B-ll
Media Test.
B-16
Read Full B-18
Read Headers B-20
Reformat Track . B-21
Write Full B-22
DRAFT
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C. Vendor Unique Status Codes
D. Reference
E. Narrow, Single-Ended Drive Configurations
Terminator Power Source Options. . . . .
Index
Contents-4
E-4
DRAFT
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Figures
1-1. Disk Drive Major Components 1-3
2-1. Single-Unit Packaging . . . . 2-3
2-2. Ten-Unit Packaging . . . . . 2-4
3-1. Disk Drive Addressing Structure 3-10
3-2. Formatted Physical Sector Allocation 3-14
3-3. Disk Drive Block Diagram . . . . . 3-15
E-1. Narrow, Single-Ended: Disk Drive Dimensions and Mounting Locations
E-l
E-2. Narrow, Single-Ended: Interface, Address and Option Connectors E-2
E-3. Narrow, Single-Ended: Connector Dimensions
.. . . E-5
E-4. Narrow, Single-Ended: Temperature Measuring
Points. . . . . E-6
Tables
1-1. HP C2486A/88A/90A SCSI Disk Drive Capacities
1-2.
HP C2486A/88A/90A Operating Specifications . .
1-3. HP C2486A/88A/90A DC Power Characteristics .
1-4.
HP C2486A/88A/90A Environmental Requirements
2-1. Address/Configuration Pin-Set Information Locations
2-2. Address/Configuration Option Descriptions
2-3. Recommended Mating Connectors
...... .
3-1. C2486A/88A/90A Cylinder
Allocation. . . . ..
4-1. HP C2486A/88A/90A Supported SCSI Commands
A-I. Supported SCSI-2 Commands ... .
B-1. Vendor Unique Commands
..... .
C-1. Vendor Unique DERROR
Status Codes
D-1. Reference Appendix Contents
....
E-l. 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 ..... .
DRAFT
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1-9
1-10
2-6
2-7
2-9
3-11
4-4
A-3
B-1
C-l
D-l
E-3
E-4
E-5
Contents-5