
4 2 1 0   S    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    4160|     |     |
Capacity form/unform  1192/      MB        Heads           5|     |     |
Seek time   / track   8.5/ 1.3 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer           512 KB SEGMENTED    Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C           50    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby            W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle          10.3 W     Shock        g        10       |     60
       seek          11.5 W     Rotation   RPM      7200
       read/write         W     Acoustic   dBA        36
       spin-up            W     ECC        Bit   126,REED SOLOMON
                                MTBF         h    1000000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates



**********************************************************************
                        L   A   Y   O   U   T
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MICROPL. 4221/4210 TAURUS 2  PRODUCT DESCRIPTION 110791 REV.A 1994

  +---------------------------------------------------------+
  |                                                         |XX
  +--+                                                    ++|XX
  |  |                                                    |||XX
  |  |                                                    |||XX
  |  |Option                               W3-Termination |||XX
  |  |Jumper                                +-+Power      |||XX
  |  |Block              Not used+++ID2                 RN2||XX
  |  |                           ++++                     ++|XX
  +--1                                                  RN1||XX
  |                                                       |||XX
  |                                                       |||XX
  |                                                       |||XX
 ++LED                                     ID0++ID1       |||XX
 ++                                          ++++         ++|XX1 J1
  |                                                         |
  |                                                         |XX
  |COMPONENT SIDE NO. 136602 SINGLE-ENDED                   |XX1 J1A
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
MICROPL. 4221/4210 TAURUS 2  PRODUCT DESCRIPTION 110791 REV. A 1994

 Jumper Setting
 ==============

 x = Factory default


 Option Jumper Block
 -------------------

             +--+--+--+--+--+--+--+--+--+--+--+--+--+--+
           - |27|25|23|21|19|17|15|13|11|09|07|05|03|01|
  -----------+  |  |  |  |  |  |  |  |  |  |  |  |  |  +-------
           + |28|26|24|22|20|18|16|14|12|10|08|06|04|02|
             ++-++-++-++-++-++-++-++-++-++-++-++-++-++-+
   RESERVED --+  |  |  |  |  |  |  |  |  |  |  |  |  +-- Remote LED
   Key 2 NC -----+  |  |  |  |  |  |  |  |  |  |  +----- ID0
      SSYNC --------+  |  |  |  |  |  |  |  |  +-------- ID1
      MSYNC -----------+  |  |  |  |  |  |  +----------- ID2
   Key 1 NC --------------+  |  |  |  |  +-------------- RESERVED
        PTY -----------------+  |  |  +----------------- SP0
         WP --------------------+  +-------------------- SP1


 Single-Ended Configuration Options
 ----------------------------------

 SCSI ID
 -------
 NOTE:
 There are two identical groups of address jumpers on the Device
 Electronics board; use either group for address selection but not
 both at the same time.

   +----------+-----------------------+ Up to eight devices (the host
   | SCSI ID  |        Jumpers        | and seven targets) can be
   |          | ID2   | ID1   | ID0   | attached to the SCSI Bus.
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  | ID jumpers ID0, ID1 and ID2
   |    1     | OPEN  | OPEN  | CLOSED| are used to assign one of
   |    2     | OPEN  | CLOSED| OPEN  | eight SCSI ID bits (0-7) to
   |    3     | OPEN  | CLOSED| CLOSED| the drive.
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED| In multiple-device systems,
   |    6     | CLOSED| CLOSED| OPEN  | each drive must have its own
   | x  7     | CLOSED| CLOSED| CLOSED| unique ID.
   +----------+-------+-------+-------+


 Interface Termination
 ---------------------
 Terminators installed at RN1 and RN2 (default)
 Drive provides termination for the interface lines.

 Terminators at RN1 and RN2 omitted
 Drive does not provide termination for the interface lines.


 SP0/SP1  Spindle Control Option
 -------------------------------
    SP0 CLOSED
    SP1 OPEN   Spindle motor starts when START UNIT command is
               received.

    SP0 OPEN   (default)
    SP1 OPEN   Spindle motor starts at power-on.


 SP0/SP1  Spindle Delay Option
 -----------------------------
    SP1 CLOSED
    SP0 OPEN   Spindle start-up is delayed based on SCSI ID (12
               seconds per ID).

    SP1 OPEN   (default)
    SP0 OPEN   Spindle motor starts at power on.


 WP  Write Protect Option
 ------------------------
    WP CLOSED  Drive is write protected.
    WP OPEN    Drive is not write protected. (default)


 PTY  Bus Parity Check Option
 ----------------------------
    PTY CLOSED  Drive neither generates nor detects parity.
        OPEN    Drive generates parity and has parity detection
                enabled. (default)


 W1/W2/W3  Bus Termination Power Option
 --------------------------------------
     +-----+  +-----+  +-----+
    W3 xxx |  | o X W2 | o o |
     | o o |  | o X |  | xxx W1
     +-----+  +-----+  +-----+

 W1  CLOSED (default)
     Drive provides local terminator power.

 W2  CLOSED
     Host system provides local terminator power.

 W1  CLOSED and W3 CLOSED
     Drive provides terminator local power and terminator power to the
     bus.


 Remote LED Option
 -----------------
 LED (user supplied) connected to Remote LED
 Both LEDs (on Device Electronics board and remote location) are
 enabled.

 Remote LED not connected (default)
 LED on Device Electronics board enabled.


 Spindle Synchronization
 -----------------------
 The Rotational Position Locking field (MODE SELECT command, Page Code
 04h) is used to specify spindle synchronization operation.

 Unsynchronized: If the drive is set to Unsynchronized (RPL = 00b), it
 ignores the SLAVE SYNC signal.

 Slave: If the drive is set to Slave (RPL = 01b), it does not generate
 the MASTER SYNC signal or the SLAVE SYNC signal but synchronizes its
 index to the SLAVE SYNC signal supplied by an external source. Signal
 termination is placed on the SLAVE SYNC signal at the first and the
 last device in the chain only.

 Master: If the drive is set to Master (RPL = 10b), it generates the
 SLAVE SYNC output signal for use directly by the slave drives. Signal
 termination is placed on the SLAVE SYNC signal at the first and the
 last device in the chain only.

 Master Control: If the drive is set to Master Control (RPL = 11b), it
 generates the MASTER SYNC signal. This output is used by the
 controller to generate the SLAVE SYNC signal for the slaves. Signal
 termination is placed on the SLAVE SYNC signal at the first and the
 last device in the chain only.



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                      I   N   S   T   A   L   L
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MICROPL. 4221/4210 TAURUS 2  PRODUCT DESCRIPTION 110791 REV. A 1994

 Notes on installation
 =====================

 Recommended mounting orientation
 --------------------------------

            horizontally             vertically
         +-----------------+   +--+             +--+
         |                 |   |  +-----+ +-----+  |
         |                 |   |  |     | |     |  |
       +-+-----------------+-+ |  |     | |     |  |
       +---------------------+ |  |     | |     |  |
                               |  |     | |     |  |
                               |  |     | |     |  |
                               |  +-----+ +-----+  |
                               +--+             +--+

 Dimensions and Mounting
 -----------------------
 The drive uses industry-standard mounting For 3 1/2-inch 1-inch high,
 Winchester disk drives.

 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down; other mounting orientations
 may be used.

 No matter what mounting orientation is used, Micropolis specifies
 that the maximum HDA casting temperature not exceed 60*C (140*F).

 In order to achieve the HDA casting temperature specified above,
 forced air flow, around the HDA and Device Electronics board, may be
 required. For recommended air-flow cooling, refer to the following
 table:

   Air Flow | Air Temperature
   ---------+----------------
   180 LFPM*| 25*C (77*F)        * Linear Feet Per Minute
   220 LFPM | 50*C (122*F)


 Mounting Screws
 ---------------
 3 per side 6-32 UNC-2B
 4 on bottom 6-32 UNC-2B

 Caution: The mounting screws must be selected so that they do not
 penetrate the bottom mounting holes by more than 0.20 inches or the
 side mounting holes by more than 0.156 inches. Screws that are too
 long will short to PCBA.


 SINGLE-ENDED Interface Electrical Characteristics
 -------------------------------------------------
 Interface control and status signals are digital (open collector TTL)
 using industry-standard transmitters and receivers which provide
 a terminated, single-ended system.

 For active termination, the assigned signals are terminated with 110
 ohms to +2.85V (nominal). For passive termination, the assigned
 signals are terminated with 220 ohms to +5V (nominal) and 330 ohms to
 ground. All signals use open-collector or tri-state drivers.

 Single-ended drivers and receivers allow a maximum cable length of
 six meters (primarily for connection within a cabinet). Signal
 transmission requires a single 50-conductor (flat or twisted-pair)
 cable. A characteristic impedance of 100 ( 10%) ohms is recommended.

  a. Input Characteristics

     Each of the drive's signal receivers has the following
     characteristics when measured at the interface connector.

   1) Low-level input voltage = (Signal true) 0.0 VDC to 0.8 VDC

   2) High-level input voltage = (Signal false) 2.0 VDC to 5.25 VDC

   3) Low-level input current = -0.4 milliamps at 0.5 VDC

   4) High-level input current = 0.1 milliamps at 2.7 VDC

   5) Minimum input hysteresis = 0.2 VDC

   6) Maximum input capacitance = 25 pF


  b. Output Characteristics

     Each driven signal has the following characteristics when
     measured at the interface connector.

   1) Low-level input voltage = 0.0 VDC to 0.5 VDC (signal assertion)

   2) High-level input voltage = 2.5 VDC to 5.25 VDC (signal negation)

   3) Minimum driver output capability = 48 milliamps (sink) at 0.5VDC


  c. Terminator Power (TERMPWR at Pin 26)

     Terminator Power has the following requirements:

   V(TERM) = 4.25 VDC to 5.25 VDC

   800 milliamps minimum source drive capability, with 1.0 amp
   recommended current limiting (e.g., a fuse).

   1.0-milliamp maximum bus loading (except for the purposes of
   providing power to an internal terminator).

 The drive provides keyed connectors to prevent accidental grounding
 or misconnection of terminator power.


 Signal Connector J1
 -------------------
 J1 is a 50-pin interface connector. The signals on J1 include the
 8-bit SCSI bus and various control and handshaking lines.

 Recommended Cable: 3M Scotchflex 3365/50 or equivalent.
 Mating connector:  3M P/N 3425-3000 or equivalent.


 J1A Power Connector
 -------------------
 J1A is a 4-pin connector used to supply +5V and +12V to the drive.

 Recommended mating connector: AMP 1-480424-0 or equivalent
 Pins: AMP 350078-4
 Suggested wire size: 18 AWG (minimum) for all pins.

  pin 1    +12 VDC
  pin 2    +12 Volts Return
  pin 3    + 5 Volts Return
  pin 4    + 5 VDC


 2-pin Option Connector (Individual signals; e.g. LED, etc.)
 -----------------------------------------------------------
 Recommended mating connectors: Dupont 69305-002 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26-30 AWG for all pins


 SCSI ID Connector (6-pin)
 -------------------------
 Recommended mating connector: Dupont 90311-006 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26 - 30 AWG for all pins


 28-Pin Option Connector
 -----------------------
 Recommended mating connector: Dupont 90311-028 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26 - 30 AWG for all pins


 4-Pin Option Connector (Spindle Synchronization)
 ------------------------------------------------
 Recommended mating connector: Dupont 90311-004 or equivalent
 Pins: Dupont 77138-001
 Suggested wire size: 26 - 30 AWG for all pins


 Multiple-Drive Systems
 ----------------------
                                             Drive #1
  +------HOST------+                 +-----------------+
  | +-----------+  +--+-SCSI-BUS-----+ J1              |
  | |Terminators|  |  |       +------+ J1A             |
  | +-----------+  |  |       |      +-----------------+
  |                |  |       |
  +----------------+  |       |              Drive #2
                      |       |      +-----------------+
                      +-------+------+ J1              |
                      |       o------+ J1A             |
                      |       |      +-----------------+
                      |       |
                      |       |              Drive #3
                      |       |      +-----------------+
                      +-------+------+ J1              |
                      |       o------+ J1A             |
                      |       |      +-----------------+
                      |       |
                      |       |              Drive #4
                      |       |      +--------------+--+
                      +-------+------+ J1           |T |
                              o------+ J1A          +--+
           ---DC-VOLTAGES-----+      +-----------------+

 T = TERMINATORS

 Terminators are installed ONLY in the last physical drive in the
 control chain.


 Temperature Measurement
 -----------------------
 Micropolis specifies the maximum HDA casting temperature to be 60*C
 (140*F). Not exceeding this temperature will ensure that the head-to-
 media interface never exceeds its temperature limit.

 If the HDA casting temperature measurement cannot be made, the
 ambient air temperature around the drive must be kept at or below
 50*C (122*F).



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
MICROPL. 4221/4210 TAURUS 2  PRODUCT DESCRIPTION 110791 REV. A 1994


 Description
 -----------
 This Product Description describes the Micropolis TAURUS 2 family of
 high-performance, 3 1/2-inch, 1-inch high Rigid Disk Drive.
 The drives provides OEMs with random-access, high-speed, data
 storage and meet the needs of diverse applications environments. The
 drives are compatible with the "ANSI CCS" version and the "SCSI-2"
 version of the industry-standard Small Computer System Interface
 (SCSI) specification.

 DIFFERENTIAL INTERFACE IS OPTIONAL.

 Some Features of the Drive
 --------------------------
 - Positive media protection is achieved during spin down (due to a
   STOP UNIT command or power off) by automatically retracting and
   locking the positioner in a data-free landing zone.

 - N-Segment Read-Ahead algorithm improves read performance by
   allowing many accesses to be serviced from the cache buffer (512K
   or optional 2MB).

 - Optional, Write-Behind Caching provides dramatic improvement in
   write performance by appending multiple write commands per disk
   revolution.

 - In-Line Defect Management (sector slipping) provides maximum
   throughput.

 - Data Integrity is ensured with CRC through the buffer, 126-bit
   Reed-Solomon ECC on-the-fly, and automatic retries using servo and
   data strobe offsets.


 Media Defects
 -------------
 Media defects are physical characteristics of the media which result
 in repetitive read errors when a functional drive is operated within
 specified operating conditions.

 At the time of manufacture, a media test system evaluates every
 drive and identifies each media defect location. The defective
 areas are identified by head address (HD), cylinder address (CYL),
 and number of bytes from Index (BFI).

 The list of manufacturer-found defects is stored on the drive in a
 reserved, write-protected area accessible by the SCSI controller.
 This list is known as the MDL (Manufacturers Defect List) or PList
 (Primary Defect List). The MDL entries can be mapped out (reassigned)
 automatically at format time by appropriate use of the format control
 parameter bits.


 Seek Time
 ---------

        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   1.3  |
                       Average msec. typ. |   8.9  |
                               msec. max. |  21    |
        Latency                msec. avg. |   4.17 |
        ----------------------------------+--------+


 Recording Media
 ---------------
 Aluminium disks, each 95 millimeters (3 1/2 inches) in diameter, are
 mounted on the spindle assembly. The recording surface on each disk
 is a thin coating of magnetic material, with a carbon over-coat to
 protect it.


 Air Filtration System
 ---------------------
 The drives are designed to provide contamination control within the
 HDA throughout the life of the drive with zero maintenance. Air
 within the HDA is continuously recirculated and filtered through a
 high efficiency filter. A breather filter protects the HDA from in-
 ward contamination migration during air pressure changes associated
 with drive temperature or atmospheric pressure variations.


 Braking
 -------
 The heads contact an area of the disk surface which is not used for
 data storage when the disk are not spinning and during start and
 stop cycles. Dynamic braking is used to stop the spindle quickly.


 Loadable Code
 -------------
 The drive can electronically download SCSI Firmware via the SCSI
 interface.


