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
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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
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DRAFT
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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
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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
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·-
1
Product Specifications
Product
Description
DRAFT
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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
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..

Options
Related
Documentation
DRAFT
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Key features of the HP C2233/34/35 disk drives are:
• High reliability (150,000 hours MTBF).
• Embedded controller incorporating SCSI-2 compatibility.
• Unformatted capacities of 275, 385, and 495 Megabytes.
• Formatted capacities of 234, 328, and 422 Megabytes.
• Extensive use of HP's state-of-the-art VLSI processes.
• Digital Signal Processor (DSP) hybrid servo sytem.
• High performance HP-designed balanced rotary actuator.
• Industry standard 3.5-inch form factor and voltage
requirements.
• Synchronous data transfer rate of up to 5.0 megabytes
per second.
• Powerful, HP designed Reed-Solomon ECC
The following options are available:
• Orderable with or without a front bezel.
• Orderable with or without a front panel LED indicator.
• Orderable with or without terminator resistor packs.
The following documentation provides information related
to the operation of
the HP C2233/34/35 disk drives:
• Small Computer Systems Interface: ANSI XT39.2/86-l09
(Rev
lOC), XT39/89-042
• Common Command Set (CCS) of the Small Computer
System Interface (SCSI):
ANSI XT39.2/85-52 (Rev 4B)
Product Specifications 1·3

Specials
Disk Drive
Specifications
Caution
Interface
For customer needs that differ from the products described
in this manual, Hewlett-Packard can provide specially
modified products. These modifications are ordered,
defined, engineered, and manufactured under "special"
contract negotiations.
The operating specifications for the
HP C2233/34/35 disk
drives are listed on the following pages.
The
HP C2233/34/35 must be operated within the
environmental limits specified in this chapter in order for
it
to function properly.
Interface type:
Controller:
Overhead time:
Buffer size:
Buffer type:
Sector size:
Interleave:
Industry Standard SCSI
< 1 ms
64 kbytes
Dual-ported
180 - 992 Data Field Bytes
1:1
Seek Time Track to Track Seek: 3 ms
1·4 Product Specifications
Average Random
Seek:
Maximum Seek:
13 ms
25 ms
Seek time is defined as the time from when the actuator
begins to move until the head has settled over the target
track.
It does not include any controller overhead time or
DRAFT
10/24/90 10:54

any initiator overhead time. The values above are derived
from a representative sample of disk drives.
Track to track seek time is the mean value of all seek times
measured when performing all possible single track seeks.
Average random seek time is the time
to do all possible
seeks divided by the number of seeks possible.
Maximum seek time is the time
it takes to seek 1511
cylinders.
Head Switch Time 1 millisecond
Spin-up Time From Power-on to Ready for Access:
Typical:
Maximum:
Rotational Latency Average time:
Internal Burst:
Data Transfer Rate
(Controller/Disk)
Sustained:
(Excludes
Controller Overhead)
External Asynchronous:
Data Transfer Rate
(Host/Controller)
Synchronous:
DRAFT
10/24/90 10:54
10 seconds
13 seconds
8.33 ms ±0.5%
Inside Zone: 1.73 megabytes/s
(13.85 megabits/s)
Middle Zone: 2.16 megabytes/s
(17.25 megabits/s)
Outside Zone: 2.58 megabytes/s
(20.65 megabits/s)
Inside Zone: 10.92 megabits/s
Middle Zone: 13.65 megabits/s
Outside Zone: 16.44 megabits/s
1.5 megabytes/s
5.0 megabytes/s
Product Specifications 1·5

Disk Drive Capacities Formatted capacities are given in parentheses and are
calculated using a 512-byte sector. When other sector sizes
are used, formatted capacities will change (refer to note
1).
HP C2233
HP C2234
HP C2235
Data Surfaces:
5 7 9
Tracks per Surface:'
• Inside Zone
512 (509) 512 (509) 512 (509)
•
Middle Zone
414 (411) 414 (411) 414 (411)
• Outer Zone
594 (591) 594 (591) 594 (591)
Sectors per track:
• Inside Zone
49 (48) 49 (48) 49 (48)
• Middle Zone
61 (60)
61 (60) 61 (60)
•
Outer Zone
73 (72) 73 (72) 73 (72)
Data Bytes Per
. 588 (512) 588 (512) 588 (512)
Sector (bytes):
Data Bytes Per
Track (bytes):
• Inside Zone
28,812 (24,576) 28,812 (24,576) 28,812 (24,576)
• Middle Zone
35,868 (30,720) 35,868 (30,720) 35,868 (30,720)
•
Outer Zone
42,924 (36,864) 42,924 (36,864) 42,924 (36,864)
Data Bytes Per 55,097,952 55,097,952 55,097,952
Surface (bytes): (46,921,728) (46,921,728) (46,921,728)
Data Bytes Per 275,489,760 385,685,664 495,881,568
Drive (bytes): (234,608,640) (328,452,096) (422,295,552)
Notes:
1. Unformatted capacities include one maintenance track each in the inside and outside zones, nine spare
tracks (three per zone) and spare sectors (one per track). In addition, 76 bytes are reserved in each
sector for other drive functions.
2.
There are 1536 total cylinders per drive, allocated as follows: A. Data Cylinders -1511; B. Alignment
Cylinders -14; C. Spare Cylinders -9; D. Maintenance Cylinders - 2 (one each in the 10 and 00 zones).
1-6 Product Specifications DRAFT
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Recoverable Data
Error Rate
Unrecovereable Data
Error Rate
Corrected Data
Error Rate
With Retries
Seek Error Rate
Disk Speed
Recording Density
(Flux Changes per
Inch)
Track Density
Coding System
DRAFT
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Less than ten (10) errors in 1011 bits transferred when the
disk drive is operated within the specified environmental
limits.
Less
than ten (10) errors in 10
13
bits transferred when the
disk drive is operated within the specified environmental
limits.
Less
than ten (10) errors in 10
14
bits transferred when the
disk drive is operated within the specified environmental
limits.
Less
than ten (10) seek errors in 107 seeks when the drive
is operated within
the specified environmental limits.
3600 rpm ±0.5%
Inner Zone: 27.42 KFCI
Middle Zone: 26.06 KFCI
Outer Zone: 26.19 KFCI
1850 TracksjIn.
2-7
Run Length Limited (RLL) Code.
Product Specifications 1-7

DC Power
Note: All values are for single ended units and ~sume
input voltages are within limits specified by the input
power requirements.
Operating Condition +S Vdc Current +12 Vdc Current
l
Power
Start-up
- Typical
0.8SA
1.88 A 26.8 W
- Maximum
0.94 A 2.0 A 28.7W
Idling
2
- Typical
0.85 A 0.44 A
9.53W
- Maximum
0.94 A 0.53 A 11.06 W
Seeking
3
- Typical
0.85 A 0.61 A 11.57 W
- Maximum
0.94 A 0.81 A 14.42 W
Notes:
1. Typical +12 Vdc currents are for sustained drive operation at 25°C ambient temperature. Maximum
+12 Vdc currents are for initial drive turn on at OOC ambient temperature and voltage at maximum
specified limi t.
2. Spindle up to speed and actuator is track following.
3.
Assuming random seeks with an average latency between seeks.
1·8 Product SpeCifications
DRAFT
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· .
2 A
1.88 A
1.5 A
1 A
0.81 A
0.61 A
0.44 A
WSPDM102
DRAFT
START UP
0.5
2
10/24/90 10:54
3
Typical +12V Current
RUNNING
4 6 8
SECONDS
SEEKING
IREADY FOR
ACCESS
10
12
14
Product Specifications 1-9

Electromagnetic
Emissions Radiated and conducted interference for
the
HP C2233/34/35 disk drives:
These products have been characterized from 10 kHz to 1
GHz as individual "components" (incomplete in nature).
Data is available upon request.
(Note: FTZ and FCC regulations do not require
"components" to meet emission specifications as free
standing devices.)
End user system emissions are highly dependent upon
the characteristics of the system in which the product is
installed. A complete test and evaluation program should
be performed on
the end use application.
Acoustical Noise Less than 27 db(A) sound presssure, idling, and less than
37 db(A) sound pressure, seeking.(measured per ISO 7779,
Acoustics.) Sound is not impulsive.
Safety This product will be evaluated as a component (incomplete
in nature)
to:
1-10 Product Specifications
• lEe: 950, Edition 1
• UL: 1950, Edition 1
• CSA: C22.2 No. 950-M89
• EN: 60950, 1988
• TUV: EN 60950, 1988; DIN VDE 0805/05.90
A complete test and evaluation program should be
performed on
the end use application.
DRAFT
10/24/90 11:02

Physical Unit Weight:
Characteristics Shipping Weight:
Single-Unit Package:
Ten-Unit Package:
Dimensions
1:
Length:
Width:
Height:
1Excluding front bezel.
DRAFT
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1.1 kg (2A Ibs)
**TBD** kg (**TBD** lbs)
**TBD** kg (**TBD** Ibs)
146.1
mm (5.75 in.)
101.6 mm (4.00 in.)
41.3
mm (1.63 in.)
Product SpeCifications 1-11

Disk Drive
Environmental
Requirements
Input Power
Requirements
Ambient Air
Temperature
The environmental requirements for the proper operation
of
the HP C2233/34/35 disk drives are listed on the
following pages.
Voltages: +5 V, +12 V
Regulation:
+5 V: ±5%
+12
V:
±10%
Ripple and Noise:
+5 V:
< 100 mVp-p
+12 V:
< 200 mVp-p
Operating! : 5°C to 50°C (41°F to 122°F)
Nonoperating!: -40°C to 65°C (-40°F
to 149°F)
1 Maximum rate of change shall not exceed 20°C (36°F) per
hour.
Relative Humidity Operating2:
8% to 80% with wet bulb limit of
28°C
Nonoperatinr:
5% to 90%
2Excludes all conditions which can cause condensation in or
on the disk drive.
Altitude Operating: 305 m (1,000
ft) below sea level to
3,048 m (10,000 ft) above sea level.
Nonoperating:
1·12 Product Specifications
305 m (1,000 ft) below sea level to
15,240 m (50,000 ft) above sea
level.
DRAFT
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