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Hard Drive: HITACHI: DK326C-10WD 1005MB 3.5"/HH SCSI2 D/W




D K 3 2 6 C - 1 0 W D    HITACHI
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    3202|     |     |
Capacity form/unform  1005/      MB        Heads           7|     |     |
Seek time   / track   9.8/ 2.0 ms          Sector/track     |     |     |
Controller           SCSI2 DI/WI/FAST      Precompensation
Cache/Buffer           448 KB LOOK-AHEAD   Landing Zone
Data transfer rate    6.000 MB/S int       Bytes/Sector      512
                     20.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -20 60
Power: sleep              W     Humidity     %         8 80    |      8 90
       standby            W     Altitude    km            3.000|        12.000
       idle               W     Shock        g         5       |     40
       seek               W     Rotation   RPM      6300
       read/write         W     Acoustic   dBA        45
       spin-up            W     ECC        Bit   96
                                MTBF         h     400000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC950,TUV,UL1950,VDE

Layout

HITACHI DK326C (WIDE-DIFF.) SPECIFICATION K6600650 12/93

 +-----------------------------------------------------+
 |                                                    ++--+  +-------+
 |                                                    |   |  |       |
 |                                                    |   |  |       |
 |                                                    |   |  |       |
 |                                                    |   |  |       |
 |                                                    |   |  |       |
 | ++LED                                9--10         |   |  |       |
 | ++                                   |  |JP2       |   |  |       |
 |                                      |  |          |   |  |       |
 |+--+                                 1+--+2         |J6 |  |       |
 ||  |                                  |  |JP3       |+-+|  |12--11 |
 ||  |J3                                |  |          || ||->| |  |  |
 ||  |                                  1--2          || ||  | |  |  |
 ||x |                                                |+-+|  |2+--+1 |
 |+--+                                                |   |  |  J6   |
 |                                                    ++--+  +-------+
 +-----------------------------------------------------+

    +-----------------------------------------------------+
    |+-J2-+ +--J6--+ +----------------J1----------------+ |
    ||OOOO| |2oooo12 |ooooooooooooooooooooooooooooooooo68 |
    ||1234| |1ooooo| |1ooooooooooooooooooooooooooooooooo| |
    |+----+ +------+ +----------------------------------+ |
    +-----------------------------------------------------+

Jumpers

HITACHI DK326C (WIDE-DIFF.) SPECIFICATION K6600650 12/93

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

Don't remove JP2 3-4, 5-6, 7-8, 9-10 and
JP3 1-2, 3-4, 5-6 and
J6 9-10 (factory setting)!

User changeable jumpers are GREEN.
Don't remove any "BLACK" jumpers (factory setting).

Jumpers JP2 1 10, and JP3 1 10, and J6 1 10 are installed at the
shipment.

The following jumpers are accessible to the user

J6 1 8 SCSI ID setting jumper
JP3 9-10 SCSI BUS PARITY CHECK setting jumper
JP3 7-8 MOTOR START/STOP setting jumper
JP2 1-2 Delay motor start jumper

NOTE1
The DK326C jumpers other than listed above are installed by the
manufacturer and must not be removed or replaced by the user.

Never remove any of the "BLACK" factory set jumpers.
These jumpers are unique to each drive.
All jumpers should be set with power off.

 Jumper socket part numbers
  +------+-----------+--------------+-----------------+
  |Jumper|Name       |Manufacturer  |Part No.         |
  |no.   |           |              |                 |
  +------+-----------+--------------+-----------------+
  |JP2   |Microbit   |Elco          |20-8387-002-005  |
  |JP3   |Header     |International |                 |
  |      |           |K.K.          |                 |
  +------+-----------+--------------+-----------------+
  |J6    |TYPE 720-M |FUJITSU       |FCN-059J102-G/KM |
  |      |PLUG       |K.K.          |                 |
  +------+-----------+--------------+-----------------+

NOTE2
By using an extesion cable from J6 connector, SCSI ID Setting and LED
are externally available.

   J6      o----------------+<----------------o J6
   12 pin                                       11 pin

 Connector part numbers on the cable side
  +-------------+-------------+--------------+
  |Name         |Manufacturer |Part No.      |
  +----+--------+-------------+--------------+
  |J6  |Housing |FUJISTU K.K. |FCN-723J012/2M|
  |    +--------+             +--------------+
  |    |Contact |             |FCN-723J-AU   |
  |    |Socket  |             |              |
  +----+--------+-------------+--------------+

J6 11/12 LED
------------
J6 Pin 11 LED Anode Parity
J6 Pin 12 LED Cathode Parity

 J6 1 8 SCSI ID
 --------------
   +----------+-------------------------------+
   | SCSI ID  |       Jumper Location         |
   |          |             PINS              |
   |          |  1-2  |  3-4  |  5-6  |  7-8  |
   +----------+-------+-------+-------+-------+
   |    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| (DEFAULT)
   +----------+-------+-------+-------+-------+

 JP3 9,10 SCSI BUS PARITY CHECK setting jumper
 ---------------------------------------------
   2-+-+-+-+-10
   | | | | | |   Enable SCSI BUS PARITY CHECK
   1-+-+-+-+-9   Remove the jumper plugs for JP2-9,10

   2-+-+-+-+-10
   | | | | |X|  Disable SCSI BUS PARITY CHECK (DEFAULT)
   1-+-+-+-+-9  Install the jumper plugs for JP2-9,10

JP3 7,8 Motor Start/Stop setting jumper
----------------------------------------

 1-+-+-+-+-9  Spindle motor start up at the power on (DEFAULT)
 | | | |X| |
 2-+-+-+-+-10 Install the jumper plug for JP3 7,8

 1-+-+-+-+-9  Spindle motor start up units the SCSI "start/stop unit
 | | | | | |  Command"
 2-+-+-+-+-10 Remove the jumper plug for JP3 7,8

 JP2 1,2  Delay Motor Start jumper
 ---------------------------------
 1-+-+-+-+-9  Delay motor start up at the power on (DEFAULT)
 |X| | | | |
 2-+-+-+-+-10 Install the jumper plug for JP1 1,2

 1-+-+-+-+-9  Spindle motor start up at the power on
 | | | | | |
 2-+-+-+-+-10 Remove the jumper plug for JP1 1,2

Terminator is not mounted on DK326C-10WD (Wide Differential Type)

Install

HITACHI DK326C SPECIFICATION K6600650 12/93

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!

Mounting
--------
Mount the drive four screws by properly inserting them trhough 4
holes in the drive. (Screw's torque: 6 8KG-cm (2.36 3.15Kg-inch).
Clearance not less than 3mm around HDA is required to accommodate any
possible vibration of HDA itself.

Cooling
-------
The cooler the opearating temperature within the specification, the
higher the reliability of the drive. When you install the drive in a
cabinet or box, ventilate it using a fan. It is desirable that the
temperature around the drive be kept at almost the same as room
temperature.

Connecting Methods
------------------
Interface Cable (Daisy Chain)

   +-----------+
   |           +-Terminator
   | SCSI BUS  | +-------++-SCSI--++-------++--------+
   |           +-+       || Cable ||       ||        |
   |           |         ||       ||       ||        |
   |           |         ||       ||       ||        |
   |           |         ||       ||       ||       ++Terminator
   |           |     +---++-+ +---++-+ +---++-+ +---+-++
   |           |     |DK326C| |DK326C| |DK326C| |DK326C|
   |           |     +--++--+ +--++--+ +--++--+ +--++--+
   |           |        ||       ||       ||       ||
   +-----------+        ||       ||       ||       ||
   |           +-Power--+|       ||       ||       ||
   |           +---------+-------+|       ||       ||
   | DC POWER  +---------+--------+-------+|       ||
   |           +---------+--------+--------+-------+|
   +-----------+         |        |        |        |
   | GND       +---------+--GND---+--------+--------+
   +-----------+

NOTE1
The SCSI bus can accommodate a maximum of eight (Single-Ended) units
including the host processor, DK326C units, and other SCSI devices.

NOTE2
Every DK326C unit is furnished with a terminator module. The
terminator module of the drives other than the last drive (end of
SCSI cable) must be removed.

Single configuration

 +-------+                    +-------+
 | HOST  +----SCSI-Bus--------+DK326C |
 | XXX   +--------------------+  XXX  |
 +-------+                    +-------+

Mult-controller configuration

 +-------+                    +-------+
 | HOST  +----SCSI-Bus--------+ DK326C|
 | XXX   +------+  +----------+     #0|
 +-------+      |  |          +-------+
                |  |          +-------+
                |  +----------+ DK326C|
                +-------------+XXX  #1|
                              +-------+

Multi-host configuration

 +-------+                    +-------+
 | HOST  +----SCSI-Bus--------+ DK326C|
 |       +----+          +----+    #0 |
 +-------+    |          |    +-------+
 +-------+    |          |    +-------+
 | HOST  |    |          |    | DK326C|
 |    XXX+----+          +----+XXX #1 |
 +-------+                    +-------+

XXX = Terminator installed

The system can consist of a maximum of eight units (Single-Ended)
including the host adapter in multi-controller and/or multi-host
configuration.

Terminator must be provided only at BOTH ENDS of SCSI Bus.

   +---------+               pin 1   +12 VDC
   | O O O O |               pin 2   +12 Volts Return (GND)
   | 4 3 2 1 | Power         pin 3   + 5 Volts Return (GND)
   +---------+               pin 4   + 5 VDC

 Connector Specifications for Cables
 -----------------------------------
 The following connector part numbers indicate the connectors on
 cable side.
 +----------------+-------------------------------------------------+
 |                |Name          Part Number      Type              |
 +----------------+-------------+----------------+------------------+
 |Cable B for     |Connector P1 |3M-3425-6500S & |Single            |
 |SCSI interface  |             |3448-3050J or   |Ended             |
 |                |             |3M-3425-6550EC  |Type              |
 |                |             |(with strain    |                  |
 |                |             |relief) or      |                  |
 |                |             |FCN-607B050-G/0 |                  |
 |                |             +----------------+------------------+
 |                |             |AMP 786090-7    |Wide Differential |
 |                |             |Fujitsu FCN     |Type              |
 |                |             |237M068-G/0     |                  |
 +----------------+-------------+----------------+------------------+
 |Cable A for DC  |Connector P3 |                |                  |
 |power supply    |      Pin    |AMP 61314-4     |                  |
 |                |             +----------------+------------------+
 |                |      Housing|AMP 1-480424-0  |                  |
 +----------------+-------------+----------------+------------------+
 |LED Connector   |Connector P6 |                |                  |
 |                |      Housing|FCN-723J012/2M  |                  |
 |                |             +----------------+------------------+
 |                |      Contact|FCN-723J-AU     |                  |
 |                |      Socket |                |                  |
 +----------------+-------------+----------------+------------------+

 Cable Specification
 -------------------
  +------------+----------------------------+------------------------+
  |            |Cable Type                  |Recommended max. Cable  |
  |            |                            |length                  |
  +------------+----------------------------+------------------------+
  |Cable B for |FLAT RIBBON or TWISTED PAIR | 6m (Single Ended Type) |
  |SCSI inter- |                            |25m (Wide Differentail) |
  |face        |                            |                        |
  +------------+----------------------------+------------------------+
  |Cable A for |AWG #20                     |                        |
  |DC power    |Sectional area core: 0.5mm  |3m                      |
  |supply      |Max. external diameter: 2.54|                        |
  +------------+----------------------------+------------------------+

When multiple drives are connected to each other in a "daisy-chain"
connection, total length of cable B should not exceed the recommended
maximum cable length.

To improve the interface noise elimination, especially if the cables
run close to noise generating devices or come out of the frame,
shield the cables as necessary.

Crimping Tools (Single-Ended Type)
----------------------------------
Cable B for control signal Manual type: 3M-3640 or 3M-3335
Cable A for DC power supply Manual type: AMP 90123-2

Features

HITACHI DK326C SPECIFICATION K6600650 12/93

Product Specifications
----------------------
The DK326C disk storage is a high-speed, large-capacity enhancement
of the existing DK325 disk storage. The DK326C has high-performance
sputtered disks and thin film heads sealed in a dust-proof enclosure.
It adopts a voice coil motor for driving the magnetic heads. It
features large capacity, high-speed positioning, and high reliability
for its compact size. The interface that the DK326C uses is a SCSI-2
interface, supporting ANSI SCSI and the CCS.

FIFO Buffer
-----------
DK326C SCSI controller has 448K (64Kx7) bytes of FIFO buffer. This
data buffering feature prevents the delay from being brought about
during reconnect processing and reduces the latency time that is
otherwise generated by the difference in the data rate between the
two devices.

Automatic error correction
--------------------------
The controller uses 12 bytes of ECC to automatically correct read
errors.

Automatic error retry
---------------------
The controller automatically retries whenever disk accesses occur.

Self-diagnosis
--------------
After power up drive performs self-diagnosis automatically. In order
to achieve higher reliability controller performs self-diagnostic
operation in about every five seconds.

Seek error retry
----------------
The controller makes a maximum of 4 retries when a seek fault or ID
mismatch error (the head is positioned on an invalid track) occurs.
A seek error retry is executed with a rezero operation.
(The controller makes a retry oneself before the host makes a retry.)
Retry execution time is not more than 110 msec times the number of
retries.













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