Conner CFP4207 Series User manual

CFP4207 Series
Intelligent Disk Drive
Product Manual
October 1995
Pre-Release
Revision A
3081 Zanker Road
San Jose, CA 95134-2128
[phone]

FCC Notice This equipment generates and uses radio frequency energy and, if not installed
and used properly; that is, in strict accordance with the manufacturer's
instructions, may cause interference to radio and television reception. It has
been type tested and found to comply with the limits for a Class B computing
device in accordance with the specifications in Part 15 of FCC Rules, which are
designed to provide reasonable protection against such interference in a
residential installation. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause interference
to radio or television reception, which can be determined by turning the
equipment on and off, you are encouraged to try to correct the interference by
one or more of the following measures:
• Reorient the receiving antenna.
• Relocate the computer with respect to the receiver.
• Move the computer into a different outlet so that the computer and receiver
are on different branch circuits.
If necessary, you should consult the dealer or an experienced radio/television
technician for additional suggestions. You may find the following booklet
prepared by the Federal Communications Commission helpful:
How to Identify and Resolve Radio-TV Interference Problems
This booklet (Stock No. 004-000-00345-4) is available from the U.S. Government
Printing Office, Washington, DC 20402.
Warning: Changes or modifications made to this equipment which have not
been expressly approved by Conner Peripherals, Inc. may cause radio and
television interference problems that could void the user's authority to operate
the equipment.
Further, this equipment complies with the limits for a Class B digital apparatus
in accordance with Canadian Radio Interference Regulations.
Cet appareil numérique de la classe B est conforme au Règlement sur le
brouillage radioélectrique, C.R.C., ch. 1374.
Conner and the Conner logo are registered trademarks of Conner Peripherals,
Inc. All other trademarks mentioned in this manual are property of their
respective owners.
Copyright 1994, 1995 Conner Peripherals, Inc.
All rights reserved.
Document No. 501-074 10/95

Important Information About this Manual
All information contained in or disclosed by this document is considered
proprietary by Conner Peripherals, Inc. By accepting this material, the recipient
agrees that this material and the information contained therein are held in
confidence and in trust and will not be used, reproduced in whole or in part, nor
its contents revealed to others, except to meet the purpose for which it was
delivered. It is understood that no right is conveyed to reproduce or translate
any item herein disclosed without express written permission from Conner
Peripherals, Inc.
Conner Peripherals, Inc. provides this manual "as is," without warranty of any
kind, either expressed or implied, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. Conner
Peripherals, Inc. reserves the right to change, without notification, the
specifications contained in this manual.
Conner Peripherals, Inc. assumes no responsibility for the accuracy,
completeness, sufficiency, or usefulness of this manual, nor for any problem that
might arise from the use of the information in this manual.

Table of Contents Page i
Table of Contents
1. Overview of the Drives 1
What are the Drives? 1
Differences Between the Models 1
Features of the Drive 2
Drive Composition 3
Mechanical Design Features 3
Drive Assembly Housing 4
Head Positioning Mechanism 5
Read/Write Heads and Disks 5
Data and Power Connections 5
Electrical Design Features 5
Integrated Circuit 5
Circuit Board 5
Firmware 6
2. Specifications 9
Specifications in this Chapter 9
Drive Capacity 10
Formatted Capacity* 10
Physical Configuration 10
Physical Configuration 10
Performance Characteristics 11
Seek Times (typical)* 11
Average Latency 11
Rotation Speed (+0.1%) 11
Controller Overhead 11
Start Time(Power Up)* 11
Stop Time at Power Down 11
Interleave 11
Read/Write Characteristics 12
Recording Method 12
Recording Density (maximum) 12
Flux Density (maximum) 12
Host Interface Characteristics 12
Command Set 12
Data Transfer Rate 12
Maximum Synchronous Transfer Offset: 12
Maximum Tagged Command Queue Depth: 12
Buffer Size: 12
Reliability 13
Data Reliability 13
Component Design Life 13
Mean Time Between Failures: 13
Preventive Maintenance 13
Power Requirements (Typical) 14
Minimum/Maximum Voltage: 14
Environmental Tolerances 15

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Page ii Filepro CFP4207 Series
Magnetic Field: 15
Acoustic Noise: 15
Safety Standards 16
Physical Characteristics - CFP4207E 17
Physical Characteristics - CFP4207S 18
Physical Characteristics - CFP4207W 19
3. Drive Operations 21
Functions of the Drive 21
Drive Operational Modes 21
Data Error Correction 22
Downloadable Microcode 22
Command Execution and Buffer Management 23
Tagged Command Queuing 23
Seek Ordering 23
Rotational Ordering 23
Coalescing 24
Read Look Ahead Code 24
Write Caching 26
4. Installing the Drive 27
Take These Precautions 27
Installing the Drive 27
Installing a CFP4207E 28
Setting the Drive's Jumpers - CFP4207E 28
Setting the SCSI Bus Address - CFP4207E 28
Disabling Spin-Up at Power On - CFP4207E 29
Delaying Spin Up at Power On - CFP4207E 29
Cabling the Drive - CFP4207E 29
Attaching Power to the Drive - CFP4207E 29
Mounting the Drive - CFP4207E 30
Mounting Screw Holes 30
Cooling 30
Installing a CFP4207S 31
Setting the Drive's Jumpers - CFP4207S 31
Disabling Spin-Up at Power On - CFP4207S 33
Delaying Spin Up at Power On - CFP4207S 33
Disabling the SCSI Bus Parity - CFP4207S 34
Disabling SCSI Bus Terminator Power (TERMPWR) -
CFP4207S 34
Setting the Bus Termination - CFP4207S 35
Cabling the Drive - CFP4207S 36
SCSI Bus Cable 36
Spindle Synchronization 36
Attaching Power to the Drive - CFP4207S 37
Attaching a Remote LED - CFP2107S 37
Mounting the Drive - CFP4207S 37
Mounting Screw Holes 37
Cooling 37
Installing a CFP4207W 39
Setting the Drive’s Jumpers - CFP4207W 39
Setting the SCSI Bus Address - CFP4207W 40
Disabling Spin-Up at Power On - CFP4207W 41

Filepro CFP2107 Series Table of Contents
Technical Reference Manual Page iii
Delaying Spin Up at Power On - CFP4207W 41
Disabling the SCSI Bus Parity - CFP4207W 42
Disabling SCSI Bus Terminator Power (TERMPWR) -
CFP4207W 42
Using the J5 Auxiliary Connector 42
- SEL0 42
- XTFAULT 43
- SEL1 43
- VUNIQ 43
- SEL2 43
- SPSYNC 43
- SEL3 44
- XTACTV 44
- GROUND 44
+5 Volts 44
- FAULT 44
Setting the Bus Termination - CFP4207W 45
Cabling the Drive - CFP4207W 46
SCSI Bus Cable 46
Mixing Wide and Narrow SCSI Devices on a SCSI Bus 47
Spindle Synchronization 47
Attaching Power to the Drive - CFP4207W 48
Attaching a Remote LED - CFP2107W 48
Mounting the Drive - CFP4207W 48
Mounting Screw Holes 48
Cooling 49
5. Interface Physical Characteristics 51
Electrical Description 51
Output Characteristics 51
Input Characteristics 52
Model-Specific SCSI Physical Characteristics 52
CFP4207E (WIDE, 80-pin Single Connector Attachment [SCA]) 53
External Terminator Power 53
Internal Termination 53
Cable Requirements 53
Connector Requirements 53
Single Connector Attachment (SCA) Signal Definitions 53
Power 53
Spindle Sync 54
LED Out 54
Motor Start Controls 54
SCSI ID Selection 54
Interface Pin Assignments 55
Interface Timing Requirements 56
Model CFP4207S (Narrow, 50-pin SCSI) 57
External Terminator Power 57
Internal Termination 57
Cable Requirements 58
Connector Requirements 59
Interface Pin Assignments 60
Interface Timing Requirements 61
Model CFP4207W (Wide, Unitized SCSI-3 P-Connector) 62
External Terminator Power 62

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Page iv Filepro CFP4207 Series
Internal Termination 62
J5 Auxiliary Connector Signal Characteristics 63
Cable Requirements 63
Connector Requirements 64
Interface Pin Assignments 65
Interface Timing Requirements 66
6. SCSI Command Implementation 67
SCSI Command Summary 67
Drive Dependent SCSI Data 67
Format Drive Page - 03H68
Drive Geometry Page - 04H70
Notch and Partition Parameters Page - 0CH71

Technical Reference Manual Page 1
Overview of the Drives
1
What are the Drives?
The CFP4207 series is a family of high performance 3.5-inch half height 4.2GB
(formatted) disk drives. They all offer 9.0 millisecond average seek time for
Reading, 9.5 millisecond seek time for Writing, with an average latency of only
4.17 ms. High capacity is achieved by utilizing a zone density recording
technique using 15 recording zones at an areal density of 317 Mbits per square
inch. These drives feature high performance while maintaining low power
consumption to reduce power supply current and system cooling requirements in
disk arrays.
They are designed to operate on the Small Computer System Interface (SCSI)
and are SCSI-2/3 compatible. The mechanical and major electronic components
are identical between the models and differ only in the host interface
implementation:
Drive Model Form Factor
Interface
Capacity
CFP4207E 1 inch high, 3.5 inch
80-pin Single Connector
FAST WIDE
4295 MB
CFP4207S 1 inch high, 3.5 inch
50-pin FAST
4295 MB
CFP4207W 1 inch high, 3.5 inch
68-pin FAST WIDE
4295 MB
CFP4207WD 1 inch high, 3.5 inch
68-pin FAST WIDE
Differential
4295 MB
The CFP4207WD drive is documented separately in the CFP4207WD SCSI Wide
Differential Intelligent Disk Drive Product Manual. The remainder of the
drives, which are documented in this manual, are referred to collectively in this
manual as “the drive” for simplicity.
Differences Between the Models
The three drive models differ only on the host interface implementation:
CFP4207E: SCSI 80-pin Wide Single Connector Attachment (SCA) interface
designed for applications such as Redundant Arrays in which the drives are
plugged directly into a backplane. The drive also implements a Wide SCSI
interface for high interface bandwidth.
CFP4207S: SCSI 50-pin standard interface designed for applications which
implement the standard SCSI-2 architecture.
CFP4207W: SCSI 68-pin Wide interface designed for applications which
require high interface bandwidth and the option of cabled interconnect. The
drive utilizes the Unitized Connector defined by the Small Form Factor
Committee (refer to SFF-8009). The Unitized Connector combines the SCSI-3 P-

Chapter 1 Overview of the Drives
Page 2 Filepro CFP4207 Series
connector Wide interface, the standard 4-pin power and a 2mm pin pitch
Auxiliary connector into a single molded assembly.
CFP4207WD: SCSI 68-pin wide differential interface designed for applications
which require high interface bandwidth and the option of cabled interconnect.
The drive utilizes the Unitized Connector defined by the Small Form Factor
Committee (refer to SFF-8009). The Unitized Connector combines the SCSI-3 P-
connector Wide interface, the standard 4-pin power and a 2mm pin pitch
Auxiliary connector into a single molded assembly. The wide SCSI differential
implementation conforms to the SCSI-3 Parallel Interface Specification 855D.
Features of the Drive
The drive provides the following features:
•Automatic Spindle Synchronization
•512 KB segmentable cache buffer with adaptive cache management
•Least Recently Used (LRU) Cache replacement
•Automatic on-the-fly data error correction utilizing a 96-bit Reed-Solomon
EDAC.
•Independent 48-bit CRC miscorrection detection.
•On the fly header error detection and correction.
•High performance rotary voice coil actuator with embedded servo system
•No thermal recalibration required to maintain performance levels
•High Shock resistance
•Automatic actuator latch against the inner stop upon power down with
dedicated landing zone
•Active Termination with removable Resistor Packs
•Active Negation output drivers for greater interface reliability
•SCSI-2/3 Compatibility
•Dual Microprocessor-controlled diagnostic routines that automatically
execute at start-up
•Sealed HDA
•Down-loadable Code through SCSI Interface
•1,7 run length limited code
•Programmable Block Size of 512 or 1024-bytes standard. Other block sizes
optionally available.
•Tagged Command Queuing with Seek Re-ordering and Write/Read
Coalescing

Overview of the Drives Chapter 1
Technical Reference Manual Page 3
Drive Composition
The drive is composed of mechanical, electrical, and firmware elements.
Mechanical Design Features
The drive’s hardware includes the components described in the following
sections. Figure 1-1 shows the drive top level assembly.
Figure 1-1
Drive Top Level Assembly
Printed Circuit
Board Assembly
Shield
Printed
Circuit
Board
Assembly
2105-1-1
Head-Disk
Assembly
Damper

Chapter 1 Overview of the Drives
Page 4 Filepro CFP4207 Series
Drive Assembly Housing
The drive assembly housing, or Head-Disk Assembly (HDA) consists of a die-cast
aluminum base on which is mounted a die-cast aluminum cover. Both the base
and the cover are fabricated using an alloy and surface finishing process
designed to inhibit oxidation. A gasket seals the joint between the base and
cover to retard the entry of moisture and environmental contaminants from the
assembly.
This assembly, the head-disk assembly, contains an integral 0.3 micron filter,
which maintains a clean environment. Critical drive components are contained
within this contaminant-free environment. Figure 1-2 shows the HDA and the
major assemblies contained within it:
Figure 1-2
Head-Disk Assembly
Disk Clamp
Disk (1 of 10)
Disk
Spacer (1 of 9)
Head-Stack
Assembly
Actuator
Magnet
Assembly
Preamplifier/
Flex Circuit
Assembly
Spindle Motor
Base Assembly
Gasket
Top Cover
4207_1_2

Overview of the Drives Chapter 1
Technical Reference Manual Page 5
Drive Motor and Spindle
A brushless DC direct-drive motor assembly is mounted on the drive’s base. The
motor rotates the drive’s spindle at 7200 RPM. The motor/spindle assembly is
dynamically balanced to provide minimal mechanical runout to the disks. A
dynamic brake is used to provide a fast stop to the spindle motor and return the
heads to the landing zone when power is removed.
Head Positioning Mechanism
The read/write heads are supported by a mechanism coupled to a rotary voice
coil actuator.
Read/Write Heads and Disks
Data is recorded on 95mm diameter disks through 3370-type 50% nano-slider
thin film heads with transverse pressure contour (TPC) air bearing surfaces.
The TPC air bearing surface allows the head to fly at a uniform height
regardless of radial position. This improves data reliability and allows the aerial
density to be more uniform with radius. The CFP4207 series contains ten
sputtered thin film disks with twenty data surfaces and twenty read/write
heads.
At power-down, the heads are automatically retracted to the inner diameter of
the disk and are latched and parked on a landing zone that is inside the data
tracks.
Data and Power Connections
Data and power connections to the drive are different between the drive models.
Refer to chapter 4 for information regarding a specific model's requirements.
Electrical Design Features
Integrated Circuit
A single integrated circuit (IC) is mounted within the sealed hard drive assembly
in close proximity to the read/write heads. The IC provides head selection, read
pre-amplification, and write drive circuitry.
Circuit Board
The drive’s dual-microprocessor-controlled circuit board provides the remaining
electronic functions, which include:
•read/write circuitry
•rotary actuator control
•interface control
•spin speed control
•auto-park
•power management

Chapter 1 Overview of the Drives
Page 6 Filepro CFP4207 Series
The background processor is a 16-bit Motorola 68HC16. The entire data path
between the serializer-deserializer and the interface chip, including the buffer
(cache) is 16 bits wide to provide high data throughput. The SCSI interface chip
manages a 16-bit to 8-bit conversion prior to transacting data over the SCSI bus
for 8-bit narrow SCSI applications.
The data buffer (cache) utilizes a 256K x 16 Dynamic RAM. Data path integrity
is ensured by using a 4-byte CRC which is appended to the data upon receipt by
the Catalina. This CRC is verified by the buffer manager when the data is taken
out of the buffer to be written to the disk and the CRC is written with the data.
A typical sector data field consists of 512 bytes of data, 4 bytes of CRC and 11
bytes of Error Detection And Correction (EDAC) code. The same CRC checks are
performed during an outbound process and the CRC is stripped from the data
prior to sending it to the Host.
The SCSI interface functions are managed by a 8-bit Motorola 68HC11
microprocessor. Low SCSI transaction overhead is maintained by automating
common SCSI bus phase sequencing using a state machine in the SCSI Interface
Chip.
Read/Write Channel
The Read/Write channel, in addition to the preamplifier discussed earlier,
consists of three integrated circuits:
•Pulse Detector
•Data Separator
•Time base
Firmware
The drive’s firmware can be considered in two parts. The first part principally
resides in the ROM for the 68HC16 background processor. This processor is
responsible for:
•starting the spindle motor and maintaining precise rotational speed
•controlling track following and actuator motion during seeking
•managing background R/W activity
•power management
•monitoring the overall health of the drive.
The interface processor's control microcode resides in both ROM and RAM. The
RAM portion of the microcode can be upgraded in the field with using software.
Additional information regarding the RAM code can be found in Chapter 3, page
22. The interface processor firmware functions include:
•reporting drive status and error conditions to the host
•manage operating parameters for the drive
•parsing the Command Descriptor Block and checking for illegal fields
•converting the LBA to CHS and initiating read and write operations to the
background processor
•defect management

Overview of the Drives Chapter 1
Technical Reference Manual Page 7
•serial port communications
Since parsing/decoding of commands and execution of the Read/Write functions
are handled by separate processors, command execution can be overlapped in
multiple initiator or Tagged Command Queuing environments. Functions such
as seek re-ordering and command coalescing can also be overlapped when the
drive is operating with a host environment capable of supporting Tagged
Command Queuing.
For more information on the drive’s interface implementation and command set,
refer to the Eleventh Generation SCSI Interface Manual.

Chapter 1 Overview of the Drives
Page 8 Filepro CFP4207 Series

Technical Reference Manual Page 9
Specifications
2
Specifications in this Chapter
This chapter provides the following specifications for the drive:
•drive capacity
•physical configuration
•performance characteristics
•read/write characteristics
•reliability
•power requirements
•environmental tolerances
•safety standards
•physical characteristics

Chapter 2 Specifications
Page 10 Filepro CFP4207 Series
Drive Capacity
Formatted Capacity*
•CFP4207 Series: 4295 MB
*1MB is equal to 106or 1,000,000 bytes
Physical Configuration
Specification:
CFP4207 Series
Disk Type
Sputtered Thin film
Head Type
Thin Film - TPC
Actuator Type
Rotary Voice-Coil
Number of Disks
10
Data Surfaces
20
Data Heads
20
Servo
Embedded
Tracks per Surface
3999
Track Density @ 0°Skew
4070 TPI
Bytes per Block
512, 1024
Blocks per Drive (logical)
8,388,608
Physical Configuration
Data Rate
(Mbits/sec) Data Tracks per
Zone per Surface User Sectors per Track *
Zone 0 (OD) 87.2 1014 124
Zone 1 85.6 268 122
Zone 2 81.3 331 119
Zone 3 78.9 188 113
Zone 4 77.0 157 111
Zone 5 75.4 128 108
Zone 6 72.6 217 105
Zone 7 68.2 340 99
Zone 8 65.6 185 95
Zone 9 63.9 118 92
Zone 10 61.7 156 89
Zone 11 60.4 87 87
Zone 12 57.7 187 83
Zone 13 51.5 432 79
Zone 14 (ID) 47.7 191 69
* The physical track configuration contains one spare sector per track.

Specifications Chapter 2
Technical Reference Manual Page 11
Performance Characteristics
Seek Times (typical)*
•Track to Track: 2.0 msec
•Average (read/write): 9.0/9.5 msec**
•Full Stroke: 18 msec
* The timing is measured from the time the last byte of the command descriptor block is
written to the time seek is initiated by the drive operating at nominal DC input
voltage and nominal operating temperature.
** The average seek time is determined by averaging the seek time for a minimum of
1000 seeks of random length over the surface of the disk.
Average Latency
•4.17 milliseconds
Rotation Speed (+0.1%)
•7200 RPM
Controller Overhead
•700 µsec
Start Time(Power Up)*
•0 RPM to Ready
−Typical: 15 seconds
−Maximum: 20 seconds
* These numbers assume spin recovery is not invoked. If spin recovery is invoked, the
maximum could be 40 seconds. Briefly removing power can lead to spin recovery
being invoked.
Stop Time at Power Down
•Typical: 10 seconds
•Maximum: 15 seconds
Interleave
•1:1

Chapter 2 Specifications
Page 12 Filepro CFP4207 Series
Read/Write Characteristics
Recording Method
•1,7 RLL code
Recording Density (maximum)
•78,000 bits per inch
Flux Density (maximum)
•58,500 bits per inch
Host Interface Characteristics
Command Set
•SCSI-2 (refer to the Eleventh Generation SCSI Technical Reference Manual
for command implementation)
Data Transfer Rate
•To/from Buffer, synchronous narrow: 10.0 MByte/second
•To/from Buffer, synchronous wide: 20.0 MByte/second
Maximum Synchronous Transfer Offset:
•15 bytes/words
Maximum Tagged Command Queue Depth:
•32 commands
Buffer Size:
•512 KB, segmentable