HP C2233 User manual

HP C2233/C2234/C2235
3.5·inch
SCSI Disk Drives
Product Description Manual
r/i~ HEWLETT
~a PACKARD
HP Part No. xxxx-xxxx
Printed in U.S.A. October 1990
Edition
1, Rev 10/24/90 (Preliminary)
Manual Order Number: HP xxxxx
DRAFT 10/24/90 13:31

Printing History
This edition of the manual is a preliminary draft. 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 or a
new update
is published.
Many product updates
do not require manual changes
and, conversely, manual corrections may be done without
accompanying product changes.
Edition
1, Rev 10/24/90 (Draft) ........... October 1990
@ Copyright 1990 by Hewlett-Packard Company.

Contents
1. 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
DC 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

2.
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 Up 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 . . . . . . .
DC 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
2-9
2-9
2-9
2-9
2-10
2-10
2-10
2-10
2-11
3-1
3-1
3-4
3-6
3-6
3-6
3-6
3-7
3-7
3-8
3-9
3-10
3-10
3-11
3-11
3-11
3-12
3-12
3-12
3-13
3-13
3-13
3-13
3-13
3-14
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
3-14
3-15
3-15
3-15
3-15
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

·-
1
Product Specifications
Product
Description
DRAFT
10/24/90 10:54
The HP 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 an 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
an 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
in chapter 2.
Product Specifications 1-1

Figure 1-1. Disk Drive Major Components
WSPDM101
1·2 Product Specifications
DRAFT
10/24/90 10:54
..