
M 2 2 6 3 H B    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1658|     |     |
Capacity form/unform   675/  742 MB        Heads          15|     |     |
Seek time   / track  16.0/ 4.0 ms          Sector/track   28|     |     |
Controller           SCSI2 DIFFERENTIAL    Precompensation
Cache/Buffer            64 KB FIFO BUFFER  Landing Zone
Data transfer rate    1.880 MB/S int       Bytes/Sector     1024
                      4.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 45    |    -40 60
Power: sleep              W     Humidity     %        20 80    |      5 95
       standby            W     Altitude    km            3.000|        12.000
       idle               W     Shock        g         2       |     20
       seek          31.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        45
       spin-up            W     ECC        Bit   56
                                MTBF         h      30000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

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                        L   A   Y   O   U   T
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FUJITSU  M2261/M2262/M2263-H/HA/HB  OEM MANUAL 41FH5037E-02

  +----------------------------------------------------------+
  |                                       1+-+2    CNH4  CN9 |XX
  |                                        | |     4+-+3 +-1 |XX
  |                                     CN3| |     2+-+1 | | |XX
  | CN7             CNH2                   | |           | | |XX
  | +-+           16+-+15                13+-+14         | | |XX
  | +-+LED          | |                                  +-13|XX 50Pin
  |                 | |              CNH3                    |XX CN1
  |                2+-+1          2+---------+16             |XX
  |                      CNH1     1+---------+15       +-+   |XX
  |                 2+--------+16                      | |   |XX
  |                 1+--------+15                      +-x   |XX
  |                                              SCSI  +-+   |XX
  |                                       terminating  | |   |XX
  |                                         resistors  +-x   |
  |                                                    +-+   |
  |                                                    | |   |XX Power
  |                                                    +-x   |XX CN2
  +----------------------------------------------------------+


**********************************************************************
                      J   U   M   P   E   R   S
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FUJITSU  M2261/M2262/M2263-S/SA/SB/H/HA/HB  OEM MAMUAL 41FH5037E-02

 Jumper Settings
 ===============

 x = Jumpers are set from factory

 The user MUST NOT change the setting of terminals not described in
 this section. Do not connect or disconnect connectors or change
 terminals except for CN3/CN9 when power is on!


 CNH1  LED display requirement
 -----------------------------
 x      1- 2 CLOSE   Lights when the IDD is connected to the SCSI bus
        1- 2 OPEN    Lights when the disk drive is in seek completion
                     status (READY)


 CNH1  User setting disabled
 ---------------------------
 x      3- 4 CLOSE   User setting disabled
 x      5- 6 CLOSE
 x      7- 8 CLOSE
 x      9-10 CLOSE


 CNH1  UNIT ATTENTION report mode
 -----------------------------
 x     11-12 CLOSE   For a command other than INQUIRY, REQUEST SENSE,
                     or PRIORITY RESERVE the IDD responds with the
                     CHECK (SCSI standard).
       11-12 OPEN    All received commands are executed normally.
                     (The CHECK CONDITION status caused by the UNIT
                     ATTENTION condition is not reported.)

 IDD response under the UNIT ATTENTION condition.
 Sets the response method against the received command when the IDD
 keeps the UNIT ATTENTION conditions. This mode is set for system re-
 quirement, however, it is recommended to use SCSI standard setting.


 CNH1  Monitoring mode time
 --------------------------
 Set the mode of the ACK signal response wait time monitoring in the
 INFORMATION TRANSFER phase, the response wait time monitoring in the
 RESELECTION phase, and number of retries. This mode setting is valid
 only when the time monitoring is enabled by the setting terminal
 CN3/CN9.

  +--------------+---------------+----------------+-----+-----+-----+
  |Monitor. time | Monitor. time | Number retries |CN3/9|CNH1 |CNH1 |
  |TRANSFER      | RESELECTION   | RESELECTION    |7-8  |13-14|15-16|
  +--------------+---------------+----------------+-----+-----+-----+
 x|umlimited     | 250  ms       | 128            |CLOSE|CLOSE|CLOSE|
  +--------------+---------------+----------------+-----+-----+-----+
  |30-60s        | 250  ms       |  10            |CLOSE|CLOSE|OPEN |
  +--------------+---------------+----------------+-----+-----+-----+
  |30-60s        | 250  ms       | unlimited      |CLOSE|OPEN |CLOSE|
  +--------------+---------------+----------------+-----+-----+-----+
  | 1- 2s        |   1.5ms       |  10            |CLOSE|OPEN |OPEN |
  +--------------+---------------+----------------+-----+-----+-----+
  |unlimited     | unlimited     | -----          |OPEN |-----|-----|
  +--------------+---------------+----------------+-----+-----+-----+


 CNH2  INQUIRY data setting
 --------------------------

             |INQUIRY VPD|Byte2,bit 2-0|Byte3,bit 3-0|Byte 7
             |information|ANSI version |Response data|Provided functio
   ----------+-----------+-------------+-------------+----------------
 x 1- 2 CLOSE|  Valid    |0,1,0        |0,0,1,0      |Indicates the
             |           |(SCSI-2)     |(SCSI-2)     |function of the
             |           |             |             |IDD for each bit
   ----------+-----------+-------------+-------------+----------------
   1- 2 OPEN |  Invalid  |0,0,1        |0,0,0,1      |All bits '0'
             |           |(SCSI-1)     |(CCS)        |
   ----------+-----------+-------------+-------------+----------------

 Set the display contents of data posted to the initiatorfrom the IDD
 with the INQUIRY command. Select one of the modes depending on the
 system software requirements.


 CNH2  Message mode setting
 --------------------------
 Set the issuance mode of the SAVE DATA POINTER message sent to the
 initiator from the IDD.

 x      3- 4 CLOSE   To disconnect the SCSI bus after execution of
                     data transfer (in DATA IN or DATA OUT phase),
                     issue the SAVE DATA POINTER message and then
                     disconnect the SCSI bus even after the number of
                     all bytes specified with the command is trans-
                     fered.
        3- 4 OPEN    To disconnect the SCSI bus before executed of the
                     STATUS phase after the number of all bytes speci-
                     fied with the command is transfered (in DATA IN
                     or DATA OUT phase), do not issue the SAVE DATA
                     POINTER message.

 When disconnecting of the SCSI bus after SAVE DATA POINTER message
 issuance is set, the processing time for message transmission in-
 creases but the data pointer restored with the re-connection proces-
 sing to execute the STATUS phase reflects the final status of data
 transfer with the command.


 CNH2  Report mode of MODE SELECT parameter
 ------------------------------------------
 Set wether the error is reported to MODE SELECT command when the IDD
 applies the parameter rounding process (rounding up or down) to the
 parameter specified by the INIT during MODE SELECT command execution.

 x      5- 6 CLOSE   GOOD status is reported to even the MODE SELECT
                     command to which the parameter rounding process
                     was applied.
        5- 6 OPEN    CHECK CONDITION status is reported to the MODE
                     SELECT command to which the parameter rounding
                     process was applied. Sense key in the sense data
                     indicates RECOVERED ERROR [=1] and the sense code
                     indicates Rounded parameter [=37-00].


 CNH2  PER default values
 ------------------------
 Set the default value of the PER (post error) flag of the read/write
 error recovery parameter (page code = 1) and verify error recovery
 parameter (page code = 7) of the MODE SELECT parameter.

                   | PER default value of
                   | the MODE SELECT parameter
        -----------+---------------------------
 x      7- 8 CLOSE | "0"
        7- 8 OPEN  | "1"

 The MODE SELECT parameter value specific to the user can be saved on
 the disk with the MODE SELECT command specification. There are no
 MODE SELECT parameter save values on the IDD when the IDD is shipped
 from the factory. The value set with the terminal is used as the ini-
 tial value of PER flag when there are no saved values. When a saved
 value is generated by the user, the IDD reads it when power is turned
 on and operates using that value.


 CNH2  Motor start mode
 ----------------------
 x      9-10 CLOSE   The motor is started immediately after power is
                     turned on.
        9-10 OPEN    Starting the motor is controlled with the START/
                     STOP command.

 Set how to start the IDD spindle motor. This setting only determines
 the operation mode when power is turned on. Stopping or restarting
 the spindle motor is controlled with the START/STOP UNIT command for
 both modes.
 By setting this feature, all IDDs spin up when power is supplied.
 This may cause a surge to the incoming power lines. If multiple IDDs
 are used in the installation configuration, the SCSI START/STOP
 command should be utilized.


 CNH2  SCSI bus parity
 ---------------------
 x     11-12 CLOSE   SCSI data bus parity check by the IDD executed
       11-12 OPEN    Not executed


 Synchronous mode data transfer
 ------------------------------
 Set wether synchronous data transfer is used. To enable synchronous
 mode transfer, set the allowable scope of the maximum transfer rate
 in synchronous mode.

 CNH2  Scope of transfer rate in synchronous mode setting
 --------------------------------------------------------
 x     13-14 CLOSE   Enable (max. 4 MB/s)
       13-14 OPEN    Disable (max. 2.67 MB/s)

 CNH2  Synchronous mode data transfer setting
 --------------------------------------------
 x     15-16 CLOSE   Enabled (synchronous)
       15-16 OPEN    Disabled (asynchronous)

 This setting does not affect asynchronous mode transfer.

 When asynchronous mode transfer is disabled, the IDD operates as
 follows. The DATA IN and DATA OUT phases of the SCSI bus are executed
 in asynchronous mode.
   When the SYNCHRONOUS DATA TRANSFER REQUEST message is sent from the
   INIT, the IDD replys with the MESSAGE REJECT message.
   The IDD does not send the SYNCHRONOUS DATA TRANSFER REQUEST message
   to the INIT.

 The maximum data transfer rate in synchronous mode is determined when
 the SYNCHRONOUS DATA TRANSFER REQUEST message is excahnged between
 the IDD and INIT.
 The INIT must determine the parameter sent to the IDD when the mes-
 sage is excahnged in consideration of the signal transfer character-
 istics of the system SCSI bus and the data reception capacity of the
 INIT.
 The IDD can transfer up to 4 MB/s in synchronous mode. However, since
 the configuration of the SCSI bus and its transfer characteristics
 differ depending on the system, the maximum transfer rate in which
 data can be transfered in a stable condition must be determined for
 each system.

 When 3 to 4 MB/s synchronous mode transfer is disabled with this ter-
 minal, the IDD surpresses the data transfer rate to 2.67 MB/s or less
 when the SYNCHRONOUS DATA TRANSFER REQUEST message is exchanged. When
 3 to 4 MB/s synchronous mode transfer is enabled, up to 4 MB/s of
 data can be transfered.
 At any rate, the maximum data transfer rate determined when the mes-
 sage is exchanged does not exceed the value in the parameter of the
 SYNCHRONOUS DATA TRANSFER REQUEST message declared by the initiator.
 Therefore, when the initiator declares the parameter within the
 allowable scope of the system, 3 to 4 MB/s synchronous mode transfer
 is enabled with this plug.

 For reference, the IDD data transfer rate in synchronous mode and the
 restrictions in the system configuration of the SCSI bus are shown
 below. The following values are rough standards. The values must be
 evaluated for each system.

 Single ended SCSI bus
    +----------------------+------------------+---------------------+
    |Maximum data transfer |Maximum length of |Number of connectable|
    |rate of the IDD (MB/s)|the SCSI cable (m)|SCSI devices         |
    +----------------------+------------------+---------------------+
    |       4.00           |       1.00       |         2           |
    +----------------------+------------------+---------------------+
    |       3.43           |       2.50       |         3           |
    +----------------------+------------------+---------------------+
    |       3.00           |       4.00       |         5           |
    +----------------------+------------------+---------------------+
    |       2.67 or less   |       6.00       |         8           |
    +----------------------+------------------+---------------------+

 Differential SCSI bus
 Generally, the destrictions of the system configuration need not be
 considered. When up to eigth SCSI devices connect to the SCSI cable
 (up to 25m), data can be transfered at 4 MB/s.


 CNH3  User setting disabled
 ---------------------------
 x      1- 2 CLOSE   User setting disabled
 x      3- 4 CLOSE
 x      5- 6 OPEN
 x      7- 8 OPEN


 CNH3  Drive type setting
 ------------------------
              |M2261|M2262|M2263|  The settings of pins 9 to 12 of
       -------+-----+-----+-----+  CNH3 indicates the IDD model types.
        9-10  |OPEN |CLOSE|OPEN |
       -------+-----+-----+-----+  The user must not change this set-
       11-12  |OPEN |OPEN |CLOSE|  tings.
       -------+-----+-----+-----+


 CNH3  User setting disabled
 ---------------------------
 x     13-14 OPEN
 x     15-16 OPEN


 CNH4 SCSI terminating resistor power
 ------------------------------------
 x      1- 2 CLOSE   Power is supplied to the terminating resistor
 x      3 -4 CLOSE   from the IDD and TERMPWR pin. Power is supplied
                     to the TERMPWR pin from the IDD.

        1 -2 OPEN    The TERMPWR pin is not used. Power is supplied to
        3 -4 CLOSE   the IDD terminating resistor only from the IDD.

        1- 2 CLOSE   Power is not supplied to the terminating resistor
        3- 4 OPEN    from the IDD. Power is supplied to the IDD termi-
                     nating resistor only from the TERMPWR pin.

        1- 2 OPEN    Power is not supplied to the terminating resistor
        3- 4 OPEN


 The table shows, how to supply power to the IDD SCSI terminating re-
 sistor module and how to use TERMPWR lines on the SCSI bus. When the
 IDD connects to a position other than at either end of the SCSI cable
 do not mount the terminating resistor modules on the IDD.

       +-----------------------------------------------------+
       |                     +------ CNH4 -----+   -+- +5V DC|
      +++                    | 1  2     4    3 |    |        |
        | TERMPWR +------+   +-+--+-----+----+-+    + Diode  |
      S *---------+ FUSE +-----+  |     |    +------+        |
      C |         +------+        +-----+----+               |
      S |                             +------+-----+         |
      I *-----------------------------+ Terminator |         |
        | SIGNAL             Mounted  | Circuit    |         |
      +++                    in socket+------+-----+         |
       |                                     + GND           |
       +-----------------------------------------------------+



 CN3/CN9 Setting terminals
 -------------------------
 These terminals can be used as a connector for the external operator
 panel.
 Some setting functions are assigned on the same pins of both CN3/CN9.
 CLOSE and OPEN in this explanation of this section have following
 meaning:
           CLOSE  The short plug is mounted between specified pins
                  on CN  or CN9.
           OPEN   The short plug is removed from between specified
                  pins on both CN3 and CN9.

 The operator panel for setting features assigned on CN3/CN9 exter-
 nally can be connected to CN3 or CN9.

 CN3/9 Offline self-diagnostics
 ------------------------------
 x      1- 2 CLOSE   Executed (diagnostic mode)
        1- 2 OPEN    Stopped (Normal operation mode)

 Starting and stopping IDD offline self-diagnosis is set as listed in
 table. IDD controller functions and the basic read/write operations
 of the disk drive can be tested with the offline self-diagnosis. In
 normal operations, this setting terminal must be shorted.

 CN3/9 User setting disabled
 ---------------------------
        3- 4         User setting disabled

 CN3/9 Read-Ahead caching
 ------------------------
 x      5- 6 CLOSE   Enable
        5- 6 OPEN    Disable

 Enabling or disabling IDD Read-Ahead caching operations is set as
 listed in table. This setting terminal can be used to temporarly
 suppress or enable caching operations to measure the effects of
 caching.

 Read-Ahead caching operations can be controlled with the MODE SELECT
 command parameter. However, the specification of this setting termi-
 nal has priority over that of the MODE SELECT parameter.
 When the caching operation is disabled, the specification of the MODE
 SELECT command has no meaning.

 CN3/9 Setting SCSI time monitoring
 ----------------------------------
        RESELECTION phase and ACK signal wait time monitoring
 x      7- 8 CLOSE   Executed
        7- 8 OPEN    Not executed

 Enabling or disabling the following IDD SCSI time monitoring opera-
 tions is set as listed.

    BSY signal wait time monitoring by the INIT in RESELECTION phase

    ACK signal wait time monitoring by the INIT for the REQ signal in
        INFORMATION TRANSFER phase

 To prevent SCSI bus infinite loop due to an operation error, do not
 disable the SCSI time monitoring except for initiator tests or de-
 bugging.

 The time monitoring mode is set with other setting terminal. (CNH1
 pin 13-16)

 CN3/CN9 SCSI ID setting
 -----------------------

         SCSI ID|CN3/9|CN3/9|CN3/9|
                | 9-10|11-12|13-14|
         -------+-----+-----+-----+
           0    |OPEN |OPEN |OPEN | Set the SCSI ID so that there are
           1    |CLOSE|OPEN |OPEN | no duplicates between SCSI devices
           2    |OPEN |CLOSE|OPEN | on the same SCSI bus.
           3    |CLOSE|CLOSE|OPEN |
           4    |OPEN |OPEN |CLOSE| The priority of SCSI bus ARBITRA-
           5    |CLOSE|OPEN |CLOSE| TION phase is determined by SCSI
           6    |OPEN |CLOSE|CLOSE| ID as follows: 7>6>5>4>3>2>1>0
 x         7    |CLOSE|CLOSE|CLOSE|


 CN7 External operator panel connector
 -------------------------------------
        pin 01       LED (V)
        pin 02       WPR (G)
        pin 03       -WPR
        pin 04       -LED

        pin 05 - 10  For internal use

 CN7 Write protect
 -----------------
        2- 3 CLOSE   Writing to the disk is inhibited
 x      2- 3 OPEN    Writing to the disk is permitted

 This signal is used with an external write protect switch. As des-
 cribed, the write protect function is enabled by shortening the
 WPR (G) terminal and  -WPR terminal at the external switch. These
 terminals should not be used for any purpose other than the external
 write protect switch.

 CN7 External LED
 ----------------
 These signals on pin 1 and pin 4 actuate the external LED as same as
 LED on front panel of the disk drive. The indication can be changed
 with a setting terminal. (CNH1 pin 1-2)



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                      I   N   S   T   A   L   L
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FUJITSU  M2261/M2262/M2263-S/SA/SB/H/HA/HB  OEM MANUAL 41FH5037E-02

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

 Installation direction
 ----------------------
     horizontally                          vertically
    +---------------+                  +--+                  +--+
    |               |                  |  +-----+      +-----+  |
    |               |                  |  |     |      |     |  |
 +--+---------------+---+              |  |     |      |     |  |
 +----------------------+              |  |     |      |     |  |
                                       |  |     |      |     |  |
      X           X                    |  |     |      |     |  |
 +------X-------X-------+              |  |     |      |     |  |
 +--+-----X---X-----+---+              |  +-----+      +-----+  |
    |      X X      |                  +--+                  +--+
    |    X    X     |
    +--X--------X---+
     X            X

 If the drive is installed in any of the above three installation
 directions, the level deviation must not exceed 5*.

 Never install PCA to the top!


 Ambient temperature
 -------------------
 The IDD must confirm to the environmental requirements. When the IDD
 is operating, the ambient temperature measured 3 cm from the Disk
 Enclosure (DE) surface and from the PCA surface must satisfy the spe-
 cified requirements.
 It is recommended that the drive be mounted in such a way that air
 is moving around the unit at a velocity of approximately 1 m/s.

 External magnetic field
 -----------------------
 The drive should not be installed near the ferromagnetic body like a
 speaker to avoid the influence of the external magnetic field.

 Multi-drive connection
 ----------------------
 The maximum number of SCSI devices that can be connected to the SCSI
 bus is 8, including the host adapter, IDD, and other SCSI equipment.

 SCSI cable
 ----------
 The maximum length of SCSI cable is as follows. If more than one SCSI
 device is connected, the total cable length must not exceed the fol-
 lowing:
          Cable length for single ended:       6m Max.
          Cable length for differential ended: 25m Max.

 The use of a 25-pair twisted cable satisfying the following require-
 ments is recommended:

    Single ended type: Conductor size: 28 American Wire Gauge (AWG)
                                       or bigger
                       Characteristic Impedance: 100 to 132

    Differential type: Conductor size: 28 AWG or bigger
                       Characteristic Impedance: 100 to 122

 Each pair of wires in the 25-pair twisted cable must be connected to
 pins n and n+1 (where n is an odd number) on the interface connector.
 Cables having an identical impedance must be use on the same SCSI bus
 to reduce signal reflection and maintain transmission characteristics

 When a SCSI device is connected to the SCSI cable except at either
 end of the cable, connection to the SCSI connector must be at a
 branchpoint of the cable. If a SCSI device is connected to one end of
 the SCSI bus, no cable should be connected after the last SCSI device
 except when the cable has a terminating resistor.

 Check, that system power is off before connecting or disconnecting
 cables!

 Be carefull of the insertion directions of the SCSI connectors. With
 the system in which terminating resistor power is supplied via the
 SCSI cable, if the drive power is turned on, the overcurrent protec-
 tion fuse of the terminating resistor power supplier may be blown or
 the cable may be burnt if overcurrent protection is not provided.

 Power cable
 -----------
 IDDs must be star-connected to the DC power sypply (one to one con-
 nection) to reduce the influence of load variations.

 Signal ground connector
 -----------------------
 For DC ground, an SG terminal is mounted on the rear of the drive.
 A DC ground cable may be installed depending on the system require-
 ments. This cable is generally connected to the ground of the power
 supply unit. Connection between more than one IDD may be in a daisy
 chain.

 Terminator
 ----------
 All SCSI devices on one bus are daisy-chained with a SCSI cable. A
 terminating resistor must be mounted in the SCSI device at each end
 of the SCSI cable.
 Since a SCSI terminating resistor module is mounted in the IDD on
 shipment, it must be removed when the IDD is not connected at either
 end of the SCSI cable. Also, a method for the power supply to the
 terminating resistor must be selected with the setting terminal on
 the IDD.

 When connecting the IDD to either end of the SCSI cable, do not de-
 mount the terminating resistor module.
 When connecting the IDD to a position other than both ends of the
 SCSI cable, demount terminating resistor modules.

 SCSI cable                   SCSI cable
 ----------++-------+         ----------++-------++-------X TERM
       +---++--+ +-xxx---+          +---++--+ +--++---+
       |       | | TERM  |          |       | |       |
       |       | |       |          |       | |       |
       |  IDD  | |  IDD  |          |  IDD  | |  IDD  |
       +-------+ +-------+          +-------+ +-------+
            Correct                     Correct

 SCSI cable                   SCSI cable
 ---------+                   ----------++-------X TERM
       +-xxx---+                    +--xxx--+
       | TERM  |                    |  TERM |
       |       |                    |       |
       |  IDD  |                    |  IDD  |
       +-------+                    +-------+
        Correct                     INCORRECT!

 When removing the terminating resistor module from the socket, be
 careful not to damage the resistor module pins, mount socket and
 contiguous parts.
 When mounting the terminating resistor moudle, check the mounting
 direction and wether the module is fixed.

      +- Marker shows pin 1            +- Marker shows pin 1
      |                                |
      |  +-----------------+           |
      |  |* * * * * * * * *|           |  +*-*-*-*-*-*-*-*-*+
      +- *                 |           +- * Resistor        |
         |* * * * * * * * *|              +*-*-*-*-*-*-*-*-*+
         +-----------------+
         Socket, terminating resistor
         module not present

 Sequential starting of spindle motors
 -------------------------------------
 After the power is turned on to the IDD, a large amount of current
 flows in the +12 V DC line when the spindle motor rotation starts.
 Therefore, if more than one IDD is used, the spindle motors should
 be started sequentially using one of the following procedures:

 1. Issue START/STOP UNIT commands at 20-second intervals to start
    the spindle motors.
 2. Turn on the +12 V DC power in the power supply unit at 30-second
    intervals to start the spindle motors sequentially.

 Noise filter
 ------------
 To eliminate AC line noise, a noise filter should be installed at the
 AC input terminal on the IDD power supply unit.
 Attenuation: 40 dB or more at 10 MHz.

 External operator panel connector
 ---------------------------------
 Two types of connectors for the external operator panel are provided
 on the IDD. They allow connection of an external write protect switch
 a LED on the front panel and a SCSI ID setting switch.

 Some signals are assigned on the same pins of both CN3 and CN9.

 When no external operator panel is connected to the IDD, CN3 and CN9
 are used for setting terminal of SCSI ID. When the IDD is shipped
 from the factory, the short plugs are mounted between all even num-
 bered and add numbered pins of CN9 and no short plug is mounted on
 CN3.

 When the external operator panel is connected to CN3 or CN9, pay
 attention to the following items:
 CN3 and CN9 have a physical interchangeability. So, the external
 operator panel can be connected either connector.
 When the external operator panel is connected to CN9, all short plugs
 on CN9 must be removed. However, pins on CN3 corresponding to the
 signal set on the external operator panel must be opened. When there
 is a signal not to set on the external operator panel, the state of
 that signal must be set on CN3 using the short plug. The removed
 short plug on CN9 can be used for setting the state.
 When the external operator panel is connected to CN3, the short plug
 on CN9 corresponding to the signal set on the external operator panel
 must be removed. When there is a signal not to set on the external
 operator panel, the state of that signal must be set on CN9 using the
 short plug.

  CN3/CN9
 +------+
 | 1   2| Start/Stop self-diagnostics
 | 3   4| Reserved
 | 5   6| Enable/Disble Read-Ahead cache function
 | 7   8| Enable/Disable SCSI time monitoring
 | 9  10| ID4
 |11  12| ID2
 |13  14| ID1
 +------+
 When there is a signal not to set on the external operator panel con-
 nected to CN9 (or CN3), the signal must be set on CN3 (or CN9) using
 the short plug. Pins of CN3 (or CN9) corresponding to the signal to
 be set on the external operator panel must be opened.


  CN7
 +---+
 | 1-+--------------------+
 | 2 |Write protect       |
 | 3 |function            |
 | 4-+---------+<---------+
 |   | external LED
 |   |
 | 5 |  For internal use
 | . |     .
 |10 |  For internal use
 +---+
 The write protect function is enabled by shortening pin 2 and pin 3
 of CN7. These terminal should not be used for any purpose other than
 the external write protect switch.

 The output signals of pin 1 and pin 4 of CN7 actuate the external LED
 as same as LED on the front panel of the disk drive. The indication
 can be changed with a setting terminal.

 Do not connect or disconnect jumpers after power is on except CN3/CN9
 terminals!
 Setting of CN3/CN9 can be changed when power is on. The SCSI ID
 setting is valid after power is turned on again or the SCSI bus is
 reset.


 Confirming initial operations
 -----------------------------
 Do not move the drive when power is turned on!

 1. Initial operation in the case where the jumper is set so that
    motor starts at power-on.

    1. When power is turned on, the IDD executes initial self-diag-
       nosis.
    2. If an error is detected in the initial self-diagnosis, the LED
       on the front panel blinks. The spindle motor may or may not
       start rotating in this stage.
    3. When the LED display requirements are set to "READY status",
       the LED on the front panel lights 20 seconds after power is
       turned on. At this time, the LED on the front panel blinks
       while the IDD reads "system information" from the system space
       on the disk.
    4. When the LED display requirements are set to "in connection
       with SCSI bus", the LED on the front panel remains off (when
       the initiator accesses the IDD via the SCSI bus, the LED
       lights). However, the disk drive enters the READY status in 20
       seconds after power is turned on. At this time, the IDD reads
       "system information" as in step 3.

 2. Initial operation in the case where the jumper is removed so that
    motor starts with a START/STOP command.

    1. When power is turned on, the IDD executes initial self-diag-
       nosis.
    2. If an error is detected in the initial self-diagnosis, the LED
       on the front panel blinks.
    3. The spindle motor does not start rotation until the START/STOP
       UNIT command for the start is issued. The INIT needs to issue
       the START/STOP UNIT command to start the spindle motor.
    4. The disk drive enters the READY status 20 seconds after the
       START/STOP UNIT command is issued. At this time, the IDD reads
       "system information" from the system space on the disk.
    5. When the LED requirements are set to "READY status", the LED on
       the front panel ligths as in step 4. However, the LED ligths in
       an instant while "system information" is being read.
    6. When the LED display requirements are set to "in connection
       with SCSI bus", the following occurs:
       * When disconnection processing is enabled with the START/STOP
       UNIT command (Immed=0), the LED blinks once in steps 3 and 4.
       * When disconnection processing is disabled with the START/STOP
       UNIT command (Immed=0), the LED lights when the command is
       issued in step 3 and it is turned off when step 4 is completed.

 3. Items to check if an error occurs.

    * Check that cables are mounted correctly.
    * Check that power and voltages are supplied correctly.
    * Check the setting of each jumper setting terminal. The initial
      operation depends on the setting of the motor start mode and LED
      display requirements.
    * If an error is detected in initial self-diagnosis, the LED on
      the front panel blinks. In this case, it is recommended to issue
      the REQUEST SENSE command from the initiator (host system) to
      obtain information (sense data) for error analysis.

    When the LED display requirements are set to "READY status", the
    LED is turned off while the drive continues the seek operations.
    However, since the LED is turned off for only one blink, the LED
    may seem to be turned on and off or not turned off at all.

    When the LED display requirements are set to "in connection with
    SCSI bus", the LED on the front panel lights only when the IDD is
    connected to the SCSI bus. Howerver, in some commands or when
    "disconnection from the bus" is enabled, the LED may only be
    turned on for an instant. Therefore it may seem that the LED
    blinks or the LED remains off.

    Since the IDD has the automatic readjustment function of positi-
    oning (seek) control, it automatically executes the adjustment
    operations with seek at specific intervals from power on (first
    adjustment: 2 minutes after power on). When the LED display re-
    quirements are set to "READY status", the LED on the front panel
    blinks during the adjustment.

 Removing drives
 ---------------
 Take the drive offline.

 Disconnect system power before removing the drive. Do not remove
 mounting screws holding the cables and drive while power is on.

 Do not move the drive until it completely stops (15 seconds after
 spindle motor is stopped with START/STOP UNIT command or after
 power is turned off).


 FUJITSU DISK-SUPPORT
 --------------------
 Harddisk parameters for SUN-OS (UNIX)
 +--------+---------+---------+----------+-----+-------+
 |Disk Typ|Data Cyl.|alt. Cyl.|phys. Cyl.|Heads|sec/trk|
 +--------+---------+---------+----------+-----+-------+
 |M2263Sx |  1648   |    2    |   1650   | 15  |   53  |
 +--------+---------+---------+----------+-----+-------+



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
FUJITSU  M2261/M2262/M2263-S/SA/SB/H/HA/HB  OEM MANUAL 41FH5037E-02

 Media defect
 ------------
 The number of allowable media defects are:  M2261  <  80
                                             M2262  < 110
                                             M2263  < 150
 The maximum defect length is 8 bytes.

 Format capacity
 ---------------
 The size of the usable area for storing user data on the IDD (format-
 ted capacity) varies according the logical data block size. (180,
 256, 512, 1024, 2048, 4096, 4160) The data format on the user space
 can be specified with the MODE SELECT command.

 SCSI/CCS standard
 -----------------
 The IDD provides not only SCSI basic functions but also the following
 features:
                    Arbitration
                    Disconnection/reselection
                    Data bus parity
                    Command set which meets the logical specification
                    of the SCSI CCS requirements.

 The SCSI command can manipulate data through logical block addressing
 regardless of physical characteristics of the disk drive. This allows
 software to accommodate future expansion of system functions.


 High speed data transfer
 ------------------------
 The data transfer rate on the SCSI bus is 1.75 MB/s maximum in asyn-
 chronous mode and 4.0 MB/s maximum in synchronous mode. Such a high
 data transfer rate on the SCSI bus can be usefull with the large
 capacity buffer in the IDD.

 The maximum data transfer rate in asynchronous mode may be limited by
 the response time of initiator and the length of SCSI bus length.

 The maximum data transfer rate in synchronous mode on the
 single-ended SCSI bus may be limited by the cable length and
 transmission characteristics of the SCSI bus.


 64KB data buffer
 ----------------
 Data is transfered between SCSI bus and disk media through the embed-
 ded 64KB data buffer in the IDD.

 Since the initiator can control the disconnect/reconnect timing on
 the SCSI bus by specifying the condition of stored data to the data
 buffer or empty condition of the data buffer, the initiator can
 perform the effective input/output operations with utilizing high
 data transfer capability of the SCSI bus regardless of actual data
 transfer rate of the disk drive.


 Read-Ahead cache feature
 ------------------------
 After executing the READ command, the IDD reads automatically and
 stores (prefetches) the subsequent data blocks into the data buffer
 (Read-Ahead caching).
 The high speed sequential data access can be archieved by transfering
 the data from the data buffer without reaccessing the disk in case
 the subsequent command requests the prefetched data blocks.


 Command stack feature
 ---------------------
 The IDD has a command stack feature corresponding to up to 7 initia-
 tors (14 for M2652HD). Therefore, the IDD can accept and stack an
 input/output command issued by another initiator even if the IDD is
 executing another command. The stack command is retrieved and exe-
 cuted in stacked order after the present command has completed.


 Landing zone
 ------------
 The actuator positions heads on the innermost landing zones over the
 disk when the power is off or the spindle motor is stopped.


 SCSI bus configuration
 ----------------------
 Up to eight SCSI devices can be connected to the SCSI bus, with any
 combination of the SCSI devices that operate as initiator and that
 operate as target.

 Each SCSI device on the bus has its own unique address (SCSI-ID: #n).
 For input/output operation, a peripheral device attached to the SCSI
 bus that operates as target is addressed in unit called as logical
 unit. A unique address (LUN: logical unit number) is assigned for
 each logical unit.

 The initiator selects one SCSI device by specifying that SCSI ID,
 then specifies the LUN to select the peripheral device for
 input/output operation.

 The IDD is constructed so that the whole volume of disk drive is a
 single logical unit, the selectable numbers of SCSI ID and LIN are as
 follows:
                     SCSI ID:  Selectable from 0 to 7
                     LUN:      0 (fixed)

   +-------------+  +-------------+  SCSI bus +----------+LUN=0
   | Host system +--+Host Adapter +-------+---+ IDD      |(fixed)
   |             |  |  ID #7      |       |   |   ID #0  |
   +-------------+  +-------------+       |   +----------+
                                          |   +----------+LUN=0
                                          +---+ IDD      |(fixed)
                                          |   |   ID #1  |
                                          |   +----------+
                                          |   +------------+
                                          +---+ Controller +--+----+--
                                          |   |   ID #2    | LUN0 LUN1
                                          |   +------------+

 Mean Time Between Failures (MTBF)
 ---------------------------------
 The estimated MTBF of the IDD during its life time is 30.000 hours
 after an initial 3-month period.


 Mean Time To Repair (MTTR)
 --------------------------
 MTTR is the average time taken ba a well-trined service mechanic to
 diagnose and repair a drive malfunction. The drive is designed for a
 MTTR of 30 minutes or less.


 Service life
 ------------
 Overhaul of the drive is not required for the first five years is
 handled correctly.


 Data security at power failure
 ------------------------------
 Integrity of the data on the disk is guaranteed against all forms of
 DC power failure except on blocks where a write operation was being
 performed. The above does not applied to formatting disks or
 assigning alternate blocks.


 DISCLAIMER
 ----------
 Failure of the M226xS/H intelligent disk drive is defined as a
 failure requiring adjustments, repairs or replacement. Fujitsu is not
 responsible for drive failures caused by misuse by the user, poor
 environmental conditions, power trouble, host problems, cable
 failures, or any failures not caused by the drive itself.


