W R E N I I I H H 9 4 2 1 6 - 1 0 6 CDC NO MORE PRODUCED Native| Translation ------+-----+-----+----- Form 5.25"/HH Cylinders 1024| | | Capacity form/unform 94/ 106 MB Heads 5| | | Seek time / track 18.0/ 4.0 ms Sector/track 34| | | Controller ESDI Precompensation Cache/Buffer KB Landing Zone Data transfer rate 1.250 MB/S int Bytes/Sector 512 MB/S ext Recording method RLL 2/7 operating | non-operating -------------+-------------- Supply voltage 5/12 V Temperature *C 10 50 | -40 70 Power: sleep W Humidity % 8 80 | 5 95 standby W Altitude km -0.305 3.048| -0.305 12.210 idle 15.0 W Shock g 2 | 32 seek W Rotation RPM 3600 read/write W Acoustic dBA spin-up W ECC Bit MTBF h 40000 Warranty Month Lift/Lock/Park YES Certificates CSA,SDA,FCC,IEC380,UL478,VDE ********************************************************************** L A Y O U T ********************************************************************** SEAGATE ST2106E PRODUCT MANUAL 77765276-E +---------------------------------------------------------+ | Option 1----+ |XX | Select +----+ |XXData | Header |XXCable | |X1 | | | ++ |XX | Terminator|| |XXControl | Resistor || |XXCable | Pack || |XX | ++ |XX | |X1 | | | |+-+Drive | || |Select | |+-1 | |X1 Power | |XX +---------------------------------------------------------+ ********************************************************************** J U M P E R S ********************************************************************** SEAGATE ST2106E PRODUCT MANUAL 77765276-E Jumper setting ============== x = Jumper set at factory Drive Select Header ------------------- +------------+ | o o o o | | o o o o | +------------+ T 4 2 1 (Drive logical address jumper positions) T = Test Seek Jumper position Jumper must not be installed during normal operation. Select Jumper 1 Jumper 2 Jumper 4 ------------------------------------------------- Drive select 0 OPEN OPEN OPEN Drive select 1 CLOSED OPEN OPEN Drive Select 2 OPEN CLOSED OPEN Drive Select 3 CLOSED CLOSED OPEN Drive Select 4 OPEN OPEN CLOSED Drive Select 5 CLOSED OPEN CLOSED Drive Select 6 OPEN CLOSED CLOSED Drive Select 7 CLOSED CLOSED CLOSED Drive Select 0 is not valid! Drive ID is binary coded by jumper position (most significant bit on left), i.e., jumper in position 4 would be Drive Logical Address 4, no jumper means Logical Address 0, which is not a Valid Address in the ESDI System. Note: Pins on the Drive Select and Configuration Select Header are provided to facilitate manual drive configuration. No devices other than jumpers should be connected to these pins. Connection to external devices (switches, connectors, etc.) could adversely affect drive performance. Exact location of these pins and headers may change without notice. Option Select Header -------------------- x Plug-1 CLOSED Motor start on power up OPEN Motor start with CMD When the jumper plug-1 is installed, a Motor ON command is required from the controller to start the spindle motor. When power is applied to the drive, the drive will generate an Attention signal and assert Standard Status Bits 8 and 9 signifying "Power On Reset Conditions Exist" and "Spindle Motor Stopped". The controller must then respond with a command to Reset the interface Attention line, and the Start Motor command in order to start the spindle motor. Note: This procedure is required anytime the "Power On Reset Condition Exists" status bit is received by the controller if the "Motor Control Implemented" jumper plug is installed. Option Select Header -------------------- Plug-2 Plug-3 Plug-4 Sectors per Track Fixed Sector Mode CLOSED CLOSED CLOSED 64 Select and CLOSED OPEN CLOSED 36 x Default Sector OPEN OPEN CLOSED 34 Size OPEN CLOSED CLOSED 35* OPEN CLOSED OPEN 19* OR Address Mark Mode OPEN OPEN OPEN Soft Sector Operation Select All other jumper combinations are undefined. * 4th Qtr. 1987. Exact date TBD. Soft Sector Option ------------------ The WREN III supports the use of the soft sector format as described in the CDC ESDI Specification, 77738076, Section 5.4.4. To implement the optional soft sectored format operation, select "Address Mark" mode in the WREN III HH by installing option jumper plugs 2, 3, and 4. DC Power and pin connector assignments -------------------------------------- +------------+ pin 1 +12 V | 1 2 3 4 | pin 2 +12 Volts Return +------------+ pin 3 + 5 Volts Return pin 4 + 5 V ********************************************************************** I N S T A L L ********************************************************************** SEAGATE ST2106E PRODUCT MANUAL 77765276-E Notes on installation ===================== Drive mounting -------------- horizontally vertically +-----------------+ +--+ +--+ +------------------+ | | | +-----+ +-----+ | | | x | | | | | | | | x+----------------+x +-+-----------------+-+ | | | | | | ||x x|| +---------------------+ | | | | | | || x x || | | | | | | || x x || x x | | | | | | || x x || +------x------x-------+ | +-----+ +-----+ | || xx || +-+------x--x-------+-+ +--+ +--+ || x x || | xx | || x x || | x x | || x x || +---x--------x----+ |x x| x x x++----------------++x UNACCEPTABLE! UNACCEPTABLE! Drive Orientation ----------------- Only two drive mounting orientations are permitted: discs in the horizontal plane and discs in the vertical plane. Horizontal mounting with the front raised at an angle of 15* is acceptable. Mounting with with either end down (front or rear) or upside down is not permissible. It is recommended that data written in a given orienta- tion be read in that same orientation. The WREN III HH is designed, manufactured, and tested with a "Plug-in and Play" installation philosophy. This philisophy minimizes the requirements for highly trained personnel to integrate the WREN III HH into an OEM's system, wether in a factory or field environment. Cooling ------- Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the WREN III HH will not exceed temperature conditions. Specific consideration should be given to make sure adequate air circulation is present around the PWAs at the rear of the drive. Interface Cabling Options ------------------------- View A +---------------------Host-Controller---------------------+ | | |Data Control Data Control Data Control Data Control | +--+-----+--------+-----+--------+-----+--------+-----+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-++-+--++-+-+ +-++-+--++-+-+ +-++-+--++-+-+ +-++-+--++-+-+ | |T | |*T| | | |T | |*T| | | |T | |*T| | | |T | |*T| | | +--+ +--+ | | +--+ +--+ | | +--+ +--+ | | +--+ +--+ | |WREN OR ESDI| |WREN OR ESDI| |WREN OR ESDI| |WREN OR ESDI| +------------+ +------------+ +------------+ +------------+ Each cable control length must not exceed 10 feet (3.00m). Each data cable length must not exceed 10 feet (3.00m). *T indicates removable terminator resistor pack. WREN data ports are permanently terminated. Radial Configuration -------------------- View A shows each drive interfaced to its own control cable, which allows interfacing an arbitrary number of drives and a variety of system operational techniques. Each drive has its data cable and control cable connected to the host controller. The length of each individual cable must not exceed 10 feet (3.0 meters). Terminator resistors must be installed in the host controller for each data cable and for each control cable. For this configuration, a terminator resistor pack must be installed in each WREN III HH Disc Drive. View B +--------------Host Controller-------------+ | | |Data Control Data Data | +-+------+-------+--------------+----------+ | | | | | | | | | | | | | +--**---+-------+------+-------+ +++-+----+---+ +++-+-----+--+ +++-+----++-++ ||T | | ||T | | ||T | |*T|| |+--+ | |+--+ | |+--+ +--+| |WREN OR ESDI| |WREN OR ESDI| |WREN OR ESDI| +------------+ +------------+ +------------+ Total control cable length must not exceed 10 feet (3.00m). Each data cable length must not exceed 10 feet (3.00m). *T indicates removable terminator resistor pack. WREN data ports are permanently terminated. ** A maximum of 7 devices may be interconnected. Daisychain Configuration ------------------------ A daisychain configuration connects a maximum of seven drives in parallel on a common control cable. Only the drive selected by the host system has its control signals enabled through this common interface. View B illustrates a daisychain of WREN III HH disk drives or other ESDI devices. A terminator resistor pack is required in the host controller for each data cable. Only the last ESDI device in the daisychain requires a terminator resistor pack for the control cable. Terminator resistor packs for the control cable or other drives must be removed. The total combined control cable length (from the controller to the first drive, to the second and subsequent drives) must not be more than 10 feet (3.00 meters). Service Tools ------------- No special tools are required for site installation or recommended for site maintenance. The depot repair philosophy od WREN III HH precludes the necessity for special tools. If field repair of items external to the HDA is desired, a 6 point Torx driver is required (T10). It may be purchased through most commercial tools catalogs. DC Cable and Connector ---------------------- The WREN III HH receives DC power through a 4 pin right angle connector mounted on the main circuit board. Recommended part number of the mating connector are provided, but equivalent parts may be used. Type of cable: 18 AWG Connector: AMP 1-480424-0 Contacts: AMP 60619-4 (Loose Piece); AMP 61117-4 (Strip) System Ground Quick Connect Terminal ------------------------------------ System ground may be connected to the Quick connect terminal. Recommended part numbers for this connector and the mating ground cable connector are listed, but equivalent parts may be used. Drive Connector Terminal: AMP P/N 61664-1 Cable Connector Terminal: AMP P/N 62137-2 Data Cable and Connector ------------------------ The I/O connector for the data interface is a 20 pin board edge connector. The odd pins are located on the front (component) side of the printed circuit board. The even pins are on the noncopmponent side of the main printed circuit board. A key slot is provided between pins 3 and 5. CDC recommends keying this connector to prevent installing it upside down. However, the WREN will not be damaged if the connector is installed upside down. Recommended part numbers for the mating connector are included below, but equivalent parts may be used. Recommended part numbers for the mating connector are included below, but equivalent parts may be used. Connector: 20 pin, 3M-3461-0001, AMP 88373-6 Strain Relief: 3M-3448-54 Cable: Flat Cable (Stranded AWG 28) 3M-3365-20 Flat Cable (Stranded AWG 28) 3M-3517-20 (Shielded Cable) Key: AMP 583274-1, 3M-3439-2 Control Cable and Connector --------------------------- The I/O connector for the control interface is a 34 pin board edge connector. The odd pins are located on the front (component) side of the main printed circuit board and are connected to the ground plane. The even pins are on the front noncomponent side of the printed circuit board. A key slot is provided between pin 3 and 5. CDC recommends keying this connector to prevent installing it upside down. However, the WREN will not be damaged if the connector is installed upside down. Recommended part numbers for the mating connector are provided, but equivalent parts may be used. Connector: 34 pin, 3M-3463-0001, AMP 111109-3 Strain Relief: 3M-3448-56 Key: AMP 583274-1, 3M-3439-2 Cable: Flat cable (Stranded AWG 28) 3M-3365-34 Flat cable (Stranded AWG 28) 3M-3517-34 (Shielded Cable) Spectra Strip Twist'n Flat 455-248-34 (Stranded AWG 28 Twisted Pair) Interface Drivers/Receivers --------------------------- The WREN III HH uses two types of signals; single ended and balanced differential. The data and clock signals use balanced differential drivers and receivers. All other signals use single ended drivers and receivers. Single Ended Drivers/Receivers ------------------------------- Transmitter Characteristics The WREN III HH uses the 7406 open collector hex inverter to buffer/ driver transmit status to the host. This driver is capable of sinking a current of 40 mA with a low-level output voltage of 0.7 V. Receiver Characteristics The WREN III HH uses the 74LS14 Hex Inverter with hysteresis gate as a line receiver. The input of each receiver is terminated in a 150ohm pullup resistor. Terminator Characteristics The terminator is a resistor module that plugs into a socket in the last drive in a daisychain. Each drive is furnished with a terminator. Terminators must be removed from all except the last drive on the cable prior to daisychain operation. An equivalent terminator must be provided in the controller on each input signal line from the drive to the controller. Only the Control cable resistor module is removable. Balanced Differential Drivers/Receivers --------------------------------------- Transmitter Characteristics The WREN III HH uses 75158 or equivalent type balanced differential drivers. An assertion on the interface is defined when the "+" output is more positive than the "-" output. Receiver Characteristics The WREN III HH uses 75157 or equivalent type balanced differential receivers. An assertion one on the interface is defined when the "+" input is more positive than the "-" input. Terminator Requirements Each differential receiver in the drive is terminated with a 100 ohm resistor. An equivalent terminator must be provided in the controller on each input signal line from the drive to the controller. ********************************************************************** F E A T U R E S ********************************************************************** SEAGATE ST2106E PRODUCT MANUAL 77765276-E Standards --------- The WREN III HH has been developed as a system peripherals to the highest standards of design and construction. The WREN III HH depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with applicable industry and governmental regualations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. The WREN III HH complies with CDC standards. The WREN III HH is a UL Recognized component per UL478 and a CSA Certified Component per CSA C22.2, No. 220-M1986. It also meets the requirements of DIN IEC 380/VDE 0806/8.81 and EN 60 950/1.1.88 The WREN III HH, as delivered, is designed for system integration before use. It is supplied as a Class A Computing Device per the FCC Rules and Regulations, Part 15, Subpart J governing EMI of computing devices end the Radio Interference Regulations of the Canadian Department of Communications EMI of computing devices. General Description ------------------- The WREN III HH is a member of a family of low cost, high performance, highly reliable, random access storage devices designed to meet the needs of the OEM marketplace. The Head/Disc/Actuator Assembly (HDA) is environmentally sealed at the factory. Air is recirculated within the HDA through a nonreplace- able filter to maintain a contamination free disc/actuator environment. The WREN III HH uses a dedicated landing zone at the innermost radius of the media thus eliminating the possibility of destroying or degrading data by landing in the data zone. The WREN III HH incorporates an automatic shipping look which prevents potential damage to the heads and discs caused by movements during shipping and handling. The shipping lock is automatically disengaged when power is applied to the drive. The WREN III HH decodes Track 0 location from the dedicated servo surface thereby eliminating mechanical transducer adjustments and related reliability concerns. The WREN III HH uses a high performance actuator assembly consisting of a low inertia, balanced, patented, straight arm design which provides excellent performance with minimum power dissipation. Media Description ----------------- The media used in the WREN III HH has a diameter of approximately 5 inches (130 mm). The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability abd environmental protection. Each data surface has a total of 1024 tracks and is capable of recording 21,381,120 bytes of unformatted data. Media defects are characterized as correctable or uncorrectable de- pending on the type and magnitude of the media flaw. Various error correction codes may be implemented. The code chosen should be consistent with Control Data media testing and certification methods. WREN III HH media certification is performed using the following standards: An error burst of 11 bits or less is a correctable error. An error burst greater than 11 bits in length is an un- correctable error. Host systems using the WREN III HH should have, as a minimum, resident capabilities to recognize and map defective tracks and perform track reallocation routines. At the time of shipment from the point of manufacture, the WREN III HH recording surfaces will meet the following requirements. 1. 1024 total tracks per surface. 2. Track 0 to be error free on each data surface. 3. 30 defects per surface maximum. 4. Cumulative defects not to exceed 1 per megabyte, based on total available unformatted drive capacity. Defect and Error Management --------------------------- The WREN III HH, as delivered, complies with this specification. The read error rate and specified storage capacity are not dependent upon use of defect management routines. However, a carefully chosen defect management plan can significantly enhance overall system performance. Identified defects are recorded on the defects list tracks per CDC ESDI specification. It is recommended that these known defects be reallocated during the initial format operation. Sector reallocation is suggested because, in general, it is more efficient and may offer significant performance improvement. Error Correction Code (ECC) should be used to correct additional flaws as they occur. ECC is recommended since most of the defects are recoverable with ECC. If ECC is not used, defects are usually unrecoverable and need to be reallocated as they are discovered. Custom Formatting ----------------- The WREN III HH is formatted during production. CDC maintains custom formatting capability which can incorporate many of the unique formats used in the Winchester marketplace. A majority of special format requirements can be implemented as specified. Driver/Receiver Characteristics ------------------------------- Interface signal levels and logical sense at the WREN I/O connector are defined as follows: Logic Level Drive Output Receiver Input ------------------------------------------------------------- High (negated) (0) 2.5 V; 5.25 V 2.0 V; 5.25 V Low (asserted) (1) 0.7 V; 0.0 V 0.8 V; 0.0 V The difference in the voltages between input and output signals is due to the losses in the cable. Seek Time --------- ----------------------------------+---------+ Track-to-Track msec. typ. | 4 | msec. max. | 6 | Average msec. typ. | 18 | Average msec. max. | 20 | Max. Seek Time (1024) msec. typ. | 35 | msec. max | 40 | Latency msec. avg. | 8.34 | ----------------------------------+---------+ Seek time is defined as the elapsed time from the receipt of a seek command until the drive signals the controller that it is ready to perform another seek or a read/write function on the new cylinder. Average seek time is determined by dividing the sum of the times for all possible movements by the total number of movements. Spindle Speed and Latency ------------------------- The spindle speed is 3597 0.5% r/min. The speed tolerance includes motor performance and motor control circuit tolerances. The average latency time is 8.34 milliseconds, based on a nominal disc speed of 3597 r/min. The maximum latency time is 16.76 milli- seconds based on a minimum disc speed of 3579 r/min. Read Data Transfer Rate ----------------------- The read serial data transfer rate is 10.0 Megabits per second. Start/Stop Time --------------- The WREN III HH will become ready less than 28 seconds after application of DC power. Stop time will be less than 30 seconds after removal of DC power. There is no power control switch on the WREN III HH. Power Sequencing ---------------- Power sequencing is not required for the WREN III HH. The drive protects against inadvertent writing during power up and down. Daisychain operation requires that power be maintained on the terminated unit to ensure proper termination of the peripherals I/O cables. Temperature ----------- 50* to 122* F (10* to 50* C) operating ambient with a maximum gradient of 18* F (10* C) per hour. Above 1000 feet (305 metres) altitude the maximum temperature is derated linearly to 112* F (44.4*C) at 10,000 feet (3048 metres). Cabinet packaging designs must provide ample air circulation around the WREN III HH to ensure environmental limits are not exceeded as a result of heat transfer from other system components. Operating Ambient for specification purposes is defined as the environment immediately surrounding the WREN III HH. The temperature of the HDA is restricted to a maximum of 142*F (61.4* C) during operation. Heat/Power Dissipation ---------------------- Each WREN III HH will dissipate no more than 25.0 watts of DC power average. Typical power dissipation under idle operating conditions is less than 15 watts. Air Cleanliness --------------- The WREN III HH is designed to operate in a typical office environment with minimum environmental control. Front Panel ----------- The WREN III HH is available with a black front panel. The panel has a window through wich a single red LED shows from its mounting on the Main PWA. The LED, when glowing, indicates the drive is selected. A flashing LED indicates the presense of a nonrecoverable fault. A fault indication is displayed irrespective of Drive Select status. Reliability ----------- The following reliability specifications assume correct host/drive operational interface, including all interface timings, power supply voltages, and environmental conditions. MTBF 40,000 hours Service Life 5 years Preventive Maintenance None required