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Conner Peripherals, Inc. SUMMIT SCSI Intelligent Disk Drives Product Manual Revision II.3 January, 1992 3081 Zanker Road San Jose, CA 95134-2128 (408) 456-4500 Notice Conner Peripherals makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Conner Peripherals shall not be liable for errors contained herein or for incidental consequential damages in connection with the furnishing, performance, or use of this material. Conner Peripherals, Inc. reserves the right to change, without notification, the specifications contained in this manual. Copyright Conner Peripherals, Inc. No part of this publication may be reproduced or translated into any language in any form without the written permission of Conner Peripherals, Inc. IBM, PC/AT are registered trademarks of International Business Machines Corporation. Table of Contents1.0 Scope of Manual 2.0 Key Features 3.0 Specification Summary 3.1 Capacity 3.2 Configuration 3.3 Performance 3.4 Read/Write 3.5 Power Requirements (Typical) 3.6 Physical Characteristics 4.0 Environmental Characteristics 4.1 Temperature 4.2 Humidity 4.3 Altitude (relative to sea level) 4.4 Reliability and Maintenance 4.5 Shock and Vibration 4.6 Magnetic Field 4.7 Acoustic Noise 4.8 Safety Standards 5.0 Functional Description 5.1 Read/Write and Control Electronics 5.2 Drive Mechanism 5.3 Air Filtration System 5.4 Head Positioning Mechanism 5.5 Read/Write Heads and Disks 5.6 Error Correction 5.7 Customer Options 5.7.1 SCSI Bus Address 5.7.2 Delay Spin 5.7.3 SCSI Parity 5.7.4 SCSI Termination 6.0 Power Connector 7.0 Recommended Mounting Configuration 8.0 SCSI Interface 8.1 SCSI Commands 8.2 Cable Requirements 8.3 Connector Requirements 8.3.1 SCSI Signals and Pin Assignments 8.4 Electrical Description 8.4.1 Output Characteristics 8.4.2 Input Characteristics 8.4.3 Terminator Power 1.0 Scope of Manual This specification describes the key features, specification summary, physical characteristics, environmental characteristics, functional description, electrical interface, recommended mounting configuration, and error reporting for the Conner Peripheral's model CP3540. 2.0 Key Features The CP3360 is a high performance 3.5 inch half height (1.625 inch) 360 megabyte (formatted) disk drives with 12 ms average seek time. It is designed to operate on the Small Computer System Interface (SCSI) and is SCSI-2 compatible. The drive features high performance, high reliability, fast access to data and high data throughput. The drive offer high performance while maintaining low power consumption to reduce power supply current and system cooling requirements in disk arrays. Typical applications for this drive is workstations, file servers, multiuser systems and disk arrays. o Automatic Spindle Synchronization o 256K Byte Segmentable Look-Ahead Read Buffer o LRU Caching Algorithm o 88 Bit Reed-Solomon EDAC with single burst on-the-fly error correction o LRC on data from interface to disk o SCSI-2 Compatibility o Sealed HDA with internal air filtration system. o Executes microprocessor-controlled diagnostic routines automatically at start- up. o Track skewing 3. 0 Specification Summary 3.1 Capacity Formatted Mbytes 362.5 3.2 Physical Configuration Disk Type Thin film Actuator Rotary Voice-Coil Number of Disks 4 Data Surfaces 8 Data Heads 8 Servo Embedded Tracks per Surface 1807 Track Density 2150 TPI Formatted Track Capacity (bytes) 25,088 Bytes per Block 512 Blocks per Drive 707,952 Sectors per Track 49 3.3 Performance Seek Times1 Track to Track: 3.0 ms Average: 12.0ms2 Maximum: 30.0ms Average Latency 6.7 ms Rotation Speed (+0.1%) 4498 RPM Data Transfer Rate 2.5 Mbyte/second (synchronous) 5.0 Mbyte/second Start Time(Power Up)3 typical: 15 seconds maximum: 20 seconds Stop Time (Power Down)typical: 15 seconds maximum: 20 seconds Interleave 1:1 Buffer Size 256KB segmentable up to 8 partitions 1 The timing is measured through the interface with the drive operating at nominal DC input voltages. 2 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. 3 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. 3.4 Read/Write Interface: SCSI (CCS) Recording Method: 2 of 7 RLL code Recording Density (ID): 44,325 bits per inch Flux Density (ID): 29,550 flux reversals per inch 3.5 Power Requirements1 (Typical) +12V DC +5V DC Power Read/Write Mode 520 ma 215 ma 7.3 W Seek Mode 715 ma 210 ma 9.6 W Idle Mode 470 ma 210 ma 6.7 W Spin-up Mode 3.0 amps 275ma n/a Read/Write Mode occurs when data is being read from or written to the disk. Seek Mode occurs while the actuator is in motion. Idle Mode occurs when the drive is not reading, writing or seeking. The motor is up to speed and DRIVE READY condition exists. Actuator is residing on last accessed track. Spin-Up Mode current draw is for 7 seconds maximum. Maximum noise allowed (DC to 1 MHZ, with equivalent resistive load): +5V DC: 2%. 1 Without terminators installed. 2 The maximum ripple allowed is 1% with equivalent resistive load. 3The maximum ripple allowed is 2% with equivalent resistive load. 3.6 Physical Characteristics Outline Dimensions (inches) 1.625" x 4.000" x 5.75" Weight 2.2 pounds 4.0 Environmental Characteristics 4.1 Temperature Operating 5°C to 55°C Non-operating -40°C to 60°C Thermal Gradient 20°C per hour maximum 4.2 Humidity Operating 8% to 80% non-condensing Non-operating 8% to 80% non-condensing Maximum Wet Bulb 26°C 4.3 Altitude (relative to sea level) Operating -200 to 10,000 feet Non-operating (maximum) 40,000 feet 4.4 Reliability And Maintenance MTBF 150,000 hours (POH) MTTR 10 minutes typical Preventive Maintenance None Component Design Life 5 years Data Reliablity <1 non-recoverable error in 1013 bits read 4.5 Shock and Vibration Shock 1/2 sine pulse, 11 msecond duration Vibration Swept sine, 1 octave per minute Non-operating shock: 50 G's Non-operating vibration: 5-62 HZ (1/2 oct/min) 0.020 inch double amplitude 63-500 Hz (1/2 oct/min) 4 G's peak Operating Shock: 5 G's (without non-recoverable errors) Operating Vibration: 5-22 Hz 0.010 inch displacement (double amplitude) 23-500 Hz 0.5 G's (without non-recoverable error) 4.6 Magnetic Field The disk drive will meet its specified performance while operating in the presence of an externally produced magnetic field under the following conditions: Frequency Field Intensity 0 to 700Khz 6 gauss maximum 700Khz to 1.5Mhz 1 gauss maximum 4.7 Acoustic Noise The sound pressure level will not exceed 40 dBA at a distance of 1 meter from the drive. 4.8 Safety Standards Conner Peripherals disk drives are designed to comply with relevant product safety standards such as: o UL 478, 5th edition, Standard for Safety of Information Processing and Business Equipment, and UL 1950, Standard for Safety of Information Technology Equipment o CSA 22.2 #154, Data Processing Equipment and CSA 22.2 #220, Information Processing and Business Equipment and CSA 22.2 #950, Safety of Information Technology equipment o IEC 435 Safety Requirements for Data Processing Equipment, IEC 380, Safety of Electrically Energized Office Machines, and IEC 950, Safety of Information Technology Equipment, Including Electrical Business Equipment. o VDE 0805 Equivalent to IEC 435, VDE 0805 TIEL 100, Equivalent to IEC 950, and VDE 0806, Equivalent to IEC 380 o TUV Essen and TUV Rheinland. 5.0 Functional Description The drive contains all necessary mechanical and electronic parts to interpret control signals, position the recording heads over the desired track, read and write data, and provide a contaminant free environment for the heads and disks. 5.1 Read/Write and Control Electronics One integrated circuit is mounted within the sealed enclosure in close proximity to the read/write heads. Its function is to provide head selection, read pre-amplification, and write drive circuitry. The microprocessor-controlled circuit card provides the remaining electronic functions which include: o Read/Write Circuitry o Rotary Actuator Control o Interface Control o Spin Speed Control o Dynamic Braking 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. 5.2 Drive Mechanism A brushless DC direct drive motor rotates the spindle. 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. 5.3 Air Filtration System The head-disk assembly is a sealed enclosure with an integral 0.3 micron filter which maintains a clean environment for the heads and disks. 5.4 Head Positioning Mechanism The read/write heads are supported by a mechanism coupled to a rotary voice coil actuator. 5.5 Read/Write Heads and Disks Data is recorded on 95mm diameter disks through 3370 type thin film heads. 5.6 Error Correction The Error Detection and Correction Code (EDAC) implementation in this generation of Conner disk drives is a Reed Solomon code with single burst on- the-fly correction capability. The code will correct any single burst of up to 11-bits in length on-the-fly. The code will correct two error bursts of up to 11-bits in length in firmware and detect three error bursts of up to 11- bits in length. The single burst detection capability of the code is 51-bits. 5.7 Customer Options 5.7.1 SCSI Bus Address There are three jumpers available for configuration of SCSI ID: E1, E2, and E3. The following table defines the settings: Jumper Options E1 E2 E3 SCSI ID Out Out Out 0 In Out Out 1 Out In Out 2 In In Out 3 Out Out In 4 In Out In 5 Out In In 6 In In In 7 5.7.2 Delay Spin A jumper in the E4 location, disables spin up on power-on. Disabling spin up on application of power can also be enabled by setting the DSPN bit in MODE SELECT page 0. E4 DSPN Result In 0 Spin Disabled In 1 Spin Disabled Out 0 Spin up on Power On Out 1 Spin Disabled 5.7.3 SCSI Parity SCSI parity is always enabled in both directions. 5.7.4 SCSI Termination Three removable resistor packs located behind the 50-pin SCSI interface connector provide SCSI bus termination. Terminator power (TERMPWR) output on pin 26 can be disabled by removing the jumper in location E5 which is located behind the 50-pin SCSI Interface ccnnector. 6.0 Power Connector The drive has a 4-pin DC power connector mounted on the PCB. The recommended mating connector is AMP part number 1-480424-0 utilizing AMP pins, part number 350078-4 or equivalent. 7.0 Recommended Mounting Configuration The drive is designed to be used in applications where the unit may experience shock and vibrations at greater levels than larger and heavier disk drives. The design features which allow greater shock tolerance are the use of rugged heads and media, a dedicated landing zone, closed loop servo positioning and specially designed motor and actuator assemblies. Ten base mounting points are provided to the customer. The drive is mounted using 6-32 x 1/8" max. insertion for the sides, and 1/4" insertion for the bottom. The system integrator should allow ventilation to the drive to ensure reliable drive operation over the operating temperature range. The drive may be mounted in any attitude. The system integrator should also allow o.060 inches (1.6mm) of free space and on each side of the drive for head-disk-assembly (HDA) sway space if the drive is expected to need operating shock specifications. If the disk drive is mounted from sides, the mounting provisions should clear the baseplate of the HDA. 8.0 SCSI Interface This section contains a brief summary of the SCSI Interface implemented in the CP3360. For additional details regarding command descriptions, please refer to the Fifth Generation SCSI Interface Manual. 8.1 SCSI Commands Following is a list of commands that the drive supports: Format Unit 04H Inquiry 12H Mode Select 15H Mode Sense 1AH Read (6) 08H Read (10) 28H Read Buffer 3CH Read Capacity 25H Read Defect Data 37H Read Long 3EH Reassign Blocks 07H Release 17H Request Sense 03H Reserve 16H Re-zero Unit 01H Seek (6) 0BH Seek Extended (10) 2BH Send Diagnostic 1DH Start/Stop Unit 1BH Test Unit Ready 00H Verify 2FH Write (6) 0AH Write Extended (10) 2AH Write and Verify 2EH Write Buffer 3BH Write Long 3FH 8.2 Cable Requirements A 50-conductor flat cable or 25-conductor twisted pair cable is required. The maximum cable length is 6.0 meters (19.68 ft.). The cable characteristic impedance should be 132 ohms ± 10% with a minimum conductor size of 28 AWG. 8.3 Connector Requirements The drive connector is a 50-conductor connector which consists of two rows of 25 male pins on 100 mil centers. The cable connector is a 50-conductor non-shielded connector which consists of two rows of 25 female contacts on 100 mil centers. 8.3.1 SCSI Signals and Pin Assignments Signal Pin No. -DB(0) 2 -DB(1) 4 -DB(2) 6 -DB(3) 8 -DB(4) 10 -DB(5) 12 -DB(6) 14 -DB(7) 16 -DB(P) 18 GND 20 GND 22 GND 24 TERMPWR 26 GND 28 GND 30 -ATN 32 GND 34 -BSY 36 -ACK 38 -RST 40 -MSG 42 -SEL 44 -C/D 46 -REQ 48 -I/O 50 The minus sign (-) indicates active low. All odd pins except pin 25 must be connected to ground. Pin 25 is left open. 8.4 Electrical Description The drive uses open collector drivers. All assigned signals are terminated with 220 ohms to +5 volts and 330 ohms to ground. The termination resistors are removable for multi-device configurations. 8.4.1 Output Characteristics Each signal driven by the drive has the following output characteristics when measured at the drive connector: Signal assertion: 0.0 VDC to 0.4 VDC Minimum driver output capability: 48 ma (sinking) at 0.5 VDC Signal negation 2.5 VDC to 5.25 VDC 8.4.2 Input Characteristics Each signal received by the drive must have the following input characteristics when measured at the drive connector: Signal assertion: 0.0 VDC to 0.8 VDC Minimum total input load: -0.4 ma (sinking) at 0.4 VDC Signal false 2.0 VDC to 5.25 VDC 8.4.3 Terminator Power Terminator power (TERMPWR) is supplied through a diode to prevent the back-flow of power to the drive. TERMPWR has the following characteristics: Supply voltage 4.0 VDC to 5.25 VDC Minimum source capability: 800 ma Minimum sink capability: 1.0 ma sink capability (except for the purpose of providing power to an interminator) with a 1.0 amp fuse.