
V I K I N G   4 . 5 6 S    QUANTUM
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |     |     |
Capacity form/unform  4556/      MB        Heads           8|     |     |
Seek time   / track   9.0/ 1.5 ms          Sector/track     |     |     |
Controller           SCSI3 SI/ULTRA        Precompensation
Cache/Buffer           512 KB EDO DRAM     Landing Zone
Data transfer rate    6.000 MB/S int       Bytes/Sector      512
                     20.000 MB/S ext SYNC
Recording method     PR4ML,PRML 16/17               operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C           55    |    -40 75
Power: sleep              W     Humidity     %         5 85    |      5 95
       standby            W     Altitude    km    -0.300  2.400| -0.304 12.000
       idle               W     Shock        g        10       |     60
       seek               W     Rotation   RPM      7200
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   224BIT REED SOLOMON,ON THE...
                                MTBF         h     800000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     CISPR22,CSA,EN60950,FCC,TU...


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QUANTUM  VIKING 2.28/4.56 8-BIT PRODUCT MANUAL 81-113146-01 14/11/96

  +---------------------------------------------------------+
  |            +---------------------------------J5---------+XX
  |            |                               TE**EXT      |XXI
  |            |                              GND**TP       |XXN
  |            |                                            |XXT
  |            +--+                                         |XXE
  |               |                                         |XXR
  |               |                                         |XXF
  |               +----------+                              |XXA
  |                          +-+                            |XXC
  |                            |                            |XXE
  |                          XX|                            |XX
  |                          XX|J3                          |XX
  |                          XX|                            |XX
  |                          XX|                            |  1
  |                            |                            |XX Power
  |                            +----------------------------+XX
  +---------------------------------------------------------+  1



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                      J   U   M   P   E   R   S
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QUANTUM  VIKING  PRODUCT MANUAL 81-113146-01 14/11/96

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


 THE 80-PIN SCA PCB HAS NO JUMPERS!


 J3 Option Header - 8-bit Models
 -------------------------------

                   GND-+ LEDPWR
               +-+-+-+-+ | +-+-+-+-----GND
             2 * * * * * * * * * * 20
             1 * * * * * * * * * * 19
        -------------------------------
            A0 + | | ++| | | | | +-RSVD3
                A1 +A2|| | | | +---RSVD2
                      || | | +-----SPIN_DLY
                      || | +-------WAIT_SPIN
                      || +---------LEDPWR
                      |+-----------TE
                      +------------RESERVED


 J3 Option Header - 16-bit Models
 --------------------------------

                   GND-+ LEDPWR
               +-+-+-+-+ | +-+-+-+-----GND
             2 * * * * * * * * * * 20
             1 * * * * * * * * * * 19
        -------------------------------
            A0 + | | ++| | | | | +-RSVD3
                A1 +A2|| | | | +---RSVD2
                      || | | +-----SPIN_DLY
                    A3+| | +-------WAIT_SPIN
                       | +---------LEDPWR
                       +-----------TE


 J1 12-pin Option Header (16-bit)
 --------------------------------

  +-+----+---+----+-+  1  - A0               2 - XTFAULT
  |++    +---+    ++|  3  - A1               4 - GND
  ||2 * * * * * *12||  5  - A2               6 - GND
  ||1 * * * * * *11||  7  - A3               8 - LEDCATH
  |+-----+   +-----+|  9  - TERM ENABLE     10 - GND
  +------+---+------+ 11  - +5V             12 - NC



 SCSI Bus Devive Identification Jumpers
 --------------------------------------
 Used in combination, the jumper setting across pins A3, A2, A1, and
 A0 at J3 of the 50-pin and 68-pin SCSI drives or at the 12-pin
 auxiliary connector (J1) of the 68-pin SCSI drive determine the
 Quantum Viking 2.28/4.56S hard disk drive's SCSI-bus device
 identification (SCSI ID). By default, Quantum configures the drive
 with a SCSI ID of six; that is, with jumpers installed across the
 pins labeled A2 and A1, and no jumper installed across the pins
 labeled A0 and A3.


 SCSI ID - W Models (16-Bit)
 ---------------------------
   +----------+-------------------------------+
   | SCSI ID  |       Jumper Location         |
   |          |             PINS              |
   |          |  A3   |  A2   |  A1   |  A0   |
   +----------+-------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |    2     | OPEN  | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |    3     | OPEN  | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |    4     | OPEN  | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    5     | OPEN  | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |    6     | OPEN  | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |    7     | OPEN  | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |    8     | CLOSED| OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |    9     | CLOSED| OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |   10     | CLOSED| OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |   11     | CLOSED| OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
   |   12     | CLOSED| CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+-------+
   |   13     | CLOSED| CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+-------+
   |   14     | CLOSED| CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+-------+
   |   15     | CLOSED| CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+-------+
 Do NOT install a jumper on A3-0 at J1 if J3 is being used for the
 SCSI ID.


 SCSI ID 8-BIT DRIVES
 --------------------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | A2    | A1    | A0    |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    2     | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    3     | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+
   |    4     | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    5     | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    6     | CLOSED| CLOSED| OPEN  | default
   +----------+-------+-------+-------+
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+

 A device's identification number determines its priority and must be
 unique in the system.


 SCSI Bus Termination Power Jumper (TE)
 --------------------------------------
 The TE jumper enables SCSI bus active termination on the drive when
 installed (TE=1). Only the two SCSI peripherals located at the end of
 the SCSI bus should have termination enabled.

 When TE is removed, the termination circuit is disabled. In the
 disabled mode, each individual SCSI bus line is electrically
 isolated from the termination source. The method allows easier enable
 and disable termination.


 SCSI Bus Termination Power Jumper (TP)
 --------------------------------------
 The TP jumper enables the active termination circuit to receive
 power from an external host when installed (TP=1). A diode on the
 OCB allows the termination circuit to receive power either from the
 on-board +5V supply or from the external host.


 Wait/Spin Jumper (WAIT_SPIN)
 ----------------------------
 With the Wait_Spin feature disabled (jumper not installed), at a
 power on or reset, the drive motor starts to spin automatically, and
 the drive prepares itself to perform read or write operations without
 the need for a start command. At a power on or reset, with the Wait_
 spin jumper enabled, the host must send a START/STOP UNIT command to
 activate the drive motor for read or write operations.

 At the factory, Quantum configures the Viking hard disk drive with
 the Wait_Spin jumper disabled; that is, without a jumper installed
 across the Wait_Spin pins.


 Spin Delay Jumper
 -----------------
 In addition, with the Spin Delay jumper enabled, the drive performs
 power sequencing to prevent an overload of the host's power supply
 due to simultaneous, peak start-up current demands from multiple
 devices.



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QUANTUM  VIKING  PRODUCT MANUAL 81-113146-01 14/11/96

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

 Installation direction
 ----------------------

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

 The drive will operate in all axis (6 directions).


 Orientation
 -----------
 The mounting holes on the Viking hard disk drive allow the drive to
 be mounted in any orientation.


 Clearance
 ---------
 The printed-circuit board assembly (PCBA) is very close to the
 mounting holes. Clearance from the drive to any other surface -
 except mounting surfaces - must be 1.25 millimeters (0.05 inches)
 minimum. The specified screw length allows full use of the mounting-
 hole threads, while avoiding damaging or placing unwanted stress on
 the PCB.


 Ventilation
 -----------
 The Viking hard disk drives operates without a cooling fan,
 provided the ambient air temperature does not exceed 131*F (55*C).


 J1 Interface Connector 8-bit
 ----------------------------
    +----------------------------------------+
    |                                        |
    |                                        |
    | +-----J1-SCSI----------------Power---+ |
    | |+-------------------------++4-3-2-1+| |
    | ||oooooooooooooooooooooooo1||O O O O|| |
    | ||ooooooooooooooooooooooooo||       || |
    | |+-Interface-Connector-----++-------+| |
    +-+------------------------------------+-+


 68-Pin Wide SCSI Connector and 12-Pin Auxiliary Connector
 ---------------------------------------------------------

    +------------------------------------------------+
    |                                                |
    |                                                |
    | +-----J1-SCSI----------------12-Pin---Power--+ |
    | |+------------------------1++------++4-3-2-1+| |
    | |||||||||||||||||||||||||2|||.....1||O O O O|| |
    | |||||||||||||||||||||||||||||......||       || |
    | |68-Interface-Connector----+12-----++-------+| |
    +-+--------------------------------------------+-+



 80-pin Single Connector Attachment (SCA) SCSI Connector J1
 ----------------------------------------------------------
    +----------------------------------------------+
    |                                              |
    |                                              |
    | +------------------------------------------+ |
    | |      +--------------------------1-+      | |
    | |      | oooooooooooooooooooooooo2o |      | |
    | |      | oooooooooooooooooooooooooo |      | |
    | |      +80-----J1-SCSI--------------+      | |
    +-+------------------------------------------+-+



 4-pin DC Power and pin connector assignments (50/68-pin)
 --------------------------------------------------------
   pin 1    +12 VDC
   pin 2    +12 Volts Return
   pin 3    + 5 Volts Return
   pin 4    + 5 VDC

 4-Pin Connector:             AMP P/N 1-480424-0
 Loose piece contacts:        AMP P/N VS 60619-4
 Strip contacts:              AMP P/N 61117-4


 J1  SCSI Connector 50-PIN
 -------------------------
 The SCSI cable connector (J1) on the Viking hard disk drive is a
 50-pin universal header. A key slot on the header prevents the
 incorrect installation of the header connector on the SCSI cable. To
 prevent the header connector on the SCSI cable from being plugged in
 backwards, use only a keyed header connector.

 Recommended header connectors and their part numbers:

 50-pin connector (base part)     AMP P/N 1-746195-2, or equivalent

 50-pin connector strain relief   AMP P/N 1-499508-2 or equivalent


 J1 SCSI Interface Connector 68-PIN
 ----------------------------------
 The 68-pin connector is an AMP AMPLIMITE .050 Series III Cable Plug
 connector, 68-position (AMP P/N 749925-5.


 J1 Interface Connector 80-PIN
 -----------------------------
 For board-to-board connections, use AMP CHAMP .050 Series I
 right-angle receptacle, 80-position (AMP P/N 5-175474-9) or Vertical
 Receptacle, 80-position (AMP P/N 5-175475-9).


 J1 12-pin Auxiliary Connector (68-Pin Connector)
 ------------------------------------------------
 J1 on the 68-pin SCSI PCB contains a 12-pin auxiliary connector. The
 pin assignments for this connector are shown in the following table.

 Pin 1   SCSI Addr - A0
     2   XTFAULT
     3   SCSI Addr - A1
     4   GND
     5   SCSI Addr - A2
     6   GND
     7   SCSI Addr - A3
     8   LED Cathode
     9   TE
    10   GND
    11   LED Pwr (+5V)
    12   NC


 Automatic Actuator Lock
 -----------------------
 To ensure data integrity and prevent damage during shipment, the
 Viking uses a dedicated landing zone and Quantum's patented
 AIRLOCK. The AIRLOCK holds the headstack in the landing zone whenever
 the disks are not rotating. It consists of an air vane mounted near
 the perimeter of the disk stack and a locking arm that restrains the
 actuator arm assembly.

 When DC power is applied to the motor and the disk stack rotates, the
 rotation generates an airflow on the surface of the disk. As the flow
 of air across the air vane increases with disk rotation, the locking
 arm pivots away from the actuator arm, enabling the headstack to move
 out of the landing. When DC power is removed from the motor, an
 electric return mechanism automatically pulls the actuator into the
 landing zone, where the AIRLOCK holds it in place.


 Air Filtration
 --------------
 Viking hard disk drives are Winchster-type drives. The heads fly very
 close to the media surface, at a nominal flying height of 0.3
 microinches. Therefore, it is essential that the air circulating
 within the drive be kept free of paticles. Quantum assembles the
 drive in a Class-100, purified air environment, sealing the drive
 mechanism under a metal cover. When the drive is in use, the rotation
 of the disks forces the air inside the drive through an internal
 filter.



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                      F   E   A   T   U   R   E  S
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QUANTUM  VIKING  PRODUCT MANUAL 81-113146-01  14/11/96


 Product Overview
 ----------------
 Quantum Viking hard disk drives are part of a family of high-
 performance, 1.0-inch-high, hard disk drives manufactured to meet the
 highest product quality standards. Viking hard disk drives use
 nonremovable, 3 -inch hard disks.

 Viking hard disk drives feature an embedded SCSI drive controller
 and use SCSI commands to optimize system performance. The drive
 manages media defects and error recovery internally, so these
 operations are transparent to the user.


 Formatted Capacity
 ------------------
 At the factory, the Viking 2.28/4.56S receives a low-level
 format that creates the actual tracks and sectors on the drive.


 Reliability
 -----------
 Mean Time Between Failures (MTBF): 800,000 Power On Hours (POH),
                                    typical usage

 Preventive Maintenance (PM):       None

 Start/Stop:                        40,000 cycles (minimum)


 Defect Management
 -----------------
 The Viking drive allocates one sector per cylinder as a
 spare. In the factory, the media is scanned for defects. If a sector
 on a cylinder is found to be defective, the address of the sector is
 added to the drive's defect list. Sectors located physically
 subsequent to the defective sector are assigned logical block
 addresses such that a sequential ordering of logical blocks
 maintained. This inline sparing technique is employed in an attempt
 to eliminate slow data transfer that would result from a single
 defective sector on a cylinder.

 If more than four sector is found defective on a cylinder, the inline
 sparing technique is applied only to the first sector. The remaining
 defective sectors are replaced with the nearest available spare
 sectors on nearby cylinders. Such an assignment of additional
 replacement sectors from nearby sectors rather than having a central
 pool of spare sectors is an attempt to minimize the motion of the
 actuator and head that otherwise would be needed to find a replace-
 ment sector. The result is minimal reduction of data throughput.


 Seek Times
 ----------
   +-----------------------+-----------+
   |Times                  | Typical   |
   |msec.                  | Nominal   |
   +-----------------------+-----------+
   |Single Track Seek      |    1.0    |
   +-----------------------+-----------+
   |Average Seek (Read)    |    8.0    |
   +-----------------------+-----------+
   |Average Seek (Write)   |   10.0    |
   +-----------------------+-----------+
   |Full-Stroke Seek       |   18      |
   +-----------------------+-----------+


 Error Correction Control ECC
 ----------------------------
 The Viking 2.28/4.56 ECC system uses a 28-byte ECC pattern, including
 four six-byte Reed-Solomon interleaves and four cross-check bytes.

 All read data is subject to ECC-on-the-fly correction. Both single-
 and double-burst errors will be corrected on-the-fly in firmware
 with hardware support. Triple-burst error correction is performed,
 if required, after an attempt has been made to re-read the data.


 Disk Caching
 ------------
 The Viking hard disk drive incorporates DisCache, a 256K disk cache,
 to enhance drive performance. This integrated feature is user-
 programmable and can significantly improve system throughput. Read
 and write caching can be enabled or disabled by using the MODE
 SELECT command.


