
M 2 6 3 7 S    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 2.5"/SUPERSLIMLINE    Cylinders    1574|     |     |
Capacity form/unform   240/      MB        Heads           6|     |     |
Seek time   / track  14.5/ 3.0 ms          Sector/track     |     |     |
Controller           SCSI2 SINGLE-ENDED    Precompensation
Cache/Buffer           224 KB READ-AHEAD   Landing Zone
Data transfer rate    2.670 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |    -40 70
Power: sleep              W     Humidity     %         8 90    |      5 95
       standby        0.2 W     Altitude    km    -0.300  3.000| -0.300 12.000
       idle           1.8 W     Shock        g        10       |    100
       seek           2.5 W     Rotation   RPM      4500
       read/write         W     Acoustic   dBA        39
       spin-up            W     ECC        Bit   88-REED SOLOMON,ON THE FLY
                                MTBF         h     150000
                                Warranty Month
Lift/Lock/Park     YES          Certificates



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                        L   A   Y   O   U   T
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FUJITSU  M2637SA  JUMPER SETTING

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  +---------------------------------------------+++++++++---+  1
                                                  ^     ^
                                    NOT USED!!--+++- J1 +- J7




**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
FUJITSU  M2637SA  JUMPER SETTING

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

 * = Factory default


 J1 SCSI level
 -------------
   SHORT*   SCSI level : Common Command Set
   OPEN     SCSI level : SCSI-2


 J2 Unit Attention
 -----------------
   SHORT*   UNIT ATTENTION enabled
   OPEN     UNIT ATTENTION disabled


 J3 SCSI parity
 --------------
   SHORT*   SCSI parity enabled
   OPEN     SCSI parity disabled


 J4
 --
   SHORT*   Spin up at power on
   OPEN     Spin via START/STOP UNIT command


 SCSI ID J7/J6/J5
 ----------------
     J7      J6      J5     ID
        =====   =====   ===== ======
    OPEN    OPEN    OPEN    0
    OPEN    OPEN    SHORT   1
    OPEN    SHORT   OPEN    2
    OPEN    SHORT   SHORT   3
    SHORT   OPEN    OPEN    4
    SHORT   OPEN    SHORT   5
    SHORT   SHORT   OPEN    6
    SHORT*  SHORT*  SHORT*  7

 NOTE
 The drive is shipped from the factory with the SCSI ID set to 7.
 This provides the drive with enough shorting straps for any ID. It
 must be remembered     though that the host adapter normally takes ID 7
 with all peripheral devices using IDs 0 through to 6.



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FUJITSU  M2637T/SA  JUMPER SETTING

 Notes On Installation
 =====================

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

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

 Installation Direction
 ----------------------
 The drive may be installed in any orientation due to balanced
 actuator design.


 Mounting screws
 ---------------
 Either side or underside mounting may be used. Standard models
 require 4, M3x8 screws.


 Cooling
 -------
 The drive should be kept within it's operating limits.


 Mounting in Cabinet
 -------------------
 Note the following points regarding mounting of the HDD in a cabinet.
 If circumstances prevent the HDD from being mounted as explained
 below, contact to distributers, reseller, or our sales offices.

 - Mount the HDD in the specified orientation.

 Mounting the HDD in an orientaion other than the specified one may
 adversely affect the temperature or may cause unexpected mechanical
 stress to the HDD. This may lead to a failure to guarantee the
 reliability level stated in the device specifications.

 - Use the specified mounting screw holes.

 Mount the HDD using the mounting screw holes for each model.

 If the HDD is attached by a means other than screws or with screws
 but not at all specified locations (four locations), unexpected
 vibration or shock may be applied to the HDD or the HDD may
 mechanically resonate. This may lead to a failure to guarantee the
 vibration and shock resistance levels stated in the device
 specifications.

 - Use mounting screws of appropriate length.

 A screw shorter than appropriate length is likely to loosen, causing
 the HDD to drop off the cabinet.

 A screw longer than appropriate length may touch the HDD body,
 causing external vibration or shock to the HDD body. This may lead to
 a failure to guarantee the vibration and shock resistance levels
 stated in the device specifications.

 - Ensure clearance between the HDD and the cabinet.

 Be sure that there is a minimum 2.5 mm clearance between the HDD and
 the cabinet. Failure to do so may block ventilation and adversely
 affect the operating temperature of the HDD. It may also cause the
 HDD to touch the cabinet, which may then induce electrical noise or
 transmit external mechanical vibration or shock directly to the HDD
 body. This may result in degraded HDD performance and reliability.

 Pay special attention to those models whose DE potential is not zero
 volatage. If this type of model contacts the cabinet connecting the
 DE to zero volatage, data errors or device faults will occur.


 Grounding
 ---------
 In an HDD with a frame, the DE and frame are electrically isolated
 from each other.

 The DE is connected to signal ground (SG); the frame is connected to
 frame ground (FG). Isolating the DE and frame in this way prevents
 the adverse effects of external electrical noise.

 Generally, a computer system uses some means of connecting SG and FG
 at one point in the system. The method used may vary depending on the
 system structure or environmental conditions.

 The DE potential in some models is not zero volatage. Be careful not
 to ground the DE body of this type of model.


 SCSI cable connection
 ---------------------
 Do not confuse the connector orientation when connecting the SCSI
 cable. Connecting the cable in the wrong orientation may blow the
 fuse of the SCSI device that supplies power to the terminating
 resistor. If the SCSI device has no fuse, misconnection may destroy
 the SCSI cable.


 Power-off
 ---------
 When power is turned off, a dynamic brake stops the rotating spindle
 motor. This requires a given time until the motor is completely
 stopped.

 Applying vibration or shock to the HDD while the spindle motor
 rotates after power-off may damage the HDD.


 Connecting and Disconnecting Interface Connector (2.5-inch HDD)
 ---------------------------------------------------------------
 The printed circuit board assembly of the 2.5-inch HDD is about 0.9
 mm thinner than that of conventional HDDs. When connecting or
 disconnecting the interface connector, push or pull the connector
 straight so as to not give excess stress to the printed circuit board
 assembly. Never force a connector. Excess stress may cause the
 printed circuit board assembly to warp or crack, resulting in poor
 (or no) contact.


 Hot Plug (SCSI Device)
 ----------------------
 Our HDDs are designed to support the hot plug feature. However, a
 drop in output voltage, output interruption, or noise may be caused
 while the HDD is starting. To minimize these symptoms, it is
 recommended that a discrete power supply be installed for each HDD.

 Also, connection or disconnection of the HDD may cause noise on the
 interface signal line and cause an interface malfunction.

 To prevent such a failure, connect zero volatage (SG) first, then
 connect the interface line, and finally connect the power line.
 Reverse the procedure when disconnecting the HDD.

 When disconnecting the HDD, do not apply vibration or shock to the
 HDD, before the power is turned off. This may disturb control of the
 head positioning and degrade data read-write performance.

 In the worst case, applying excess shock may damage the head or disk,
 resulting in data destruction.

 If there is a chance that the power to the HDD containing the
 terminating resistor will be turned off, design the system so that
 power to the terminating resistor (TERMPWR) is supplied from another
 SCSI device. Generally, TERMPWR is supplied from the initiator
 (host).



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                      F   E   A   T   U   R   E  S
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FUJITSU  MEDIA DEFECTS

 Media Defects
 -------------
 Before the unit leaves the factory, media defects are listed on the
 MEDIA DEFECT LIST. This list is written on the media in the SA space
 which is a reserved area of the disk.



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                      G   E   N   E   R   A   L
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FUJITSU => GDT

 Tips & Hints about ICP controllers and other peripherals
 ========================================================

 Tagged queues and Fujitsu M 26xx harddisks
 ------------------------------------------
 Fujitsu Harddisks of the M26XX series do not support the SCSI-II
 feature tagged queues. You should disable this feature in the
 initialize disks menue of the GDTSetup program. An inquiry command
 shows, that the harddisk supports tagged queues (this is why you can
 enable it in the GDTSetup) but this is not true as stated by Fujitsu
 Germany.


