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                         SEAGATE TECHNOLOGY, INC.
       Customer Technical Support FAX Network +1 408 438-8137
     Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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? United States    +1 408 438-8771 ?  United Kingdom +44 628 478011  ?
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? Germany         +49  89 140-9331 ?  Singapore      +65   227-2217  ?
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                            (C)opyright 1991



ST-4769ES Wren Runner 2 FH ESDI

          ?Data Cable                ?Controller Cable     /?5?G?G?12\
         ???????? ???           J11 ?????????????? ???    ?? 0 0 0 0 ???
                o o o o o o o   o o   1???????????? o o o o????J1?????
            J9  o o o o o o o   ???   ?Terminator?? o o o o
                1 2 3 4 5 6 7    ??Synchronous      1 2 4 W
  Motor Start ??? ? ? ? ? ? ?     ?Spindles         ????? ?    J8
option enable     ? ? ? ? ? ?                         ?   ? Write Protect
                  ? ? ? ? ? ? Synchronized Spindle    ????? Drive Selects
Factory use only ?? ? ? ? ?   Terminator (connected on       Binary Coded
                    ? ? ? ?   last drive in daisy chain)
         Sectors    ? ? ? ?? Factory use only
         ??????????????????
       Special      0 0 0
            50      0 0 1 = 595,968,000
            51      0 1 0 = 607,887,360
            52      0 1 1 = 619,806,720
            53      1 0 0 = 631,726,080
            29      1 0 1
      Reserved      1 1 0
      Add Mark      1 1 1     0=open; 1=closed


                             ST-4769E

       UNFORMATTED CAPACITY (MB) ________________
       FORMATTED CAPACITY (53 SECTORS) (MB) _____631
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________23,280
       CYLINDERS ________________________________1552
       HEADS ____________________________________15
       DISCS ____________________________________8
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec) _______22
       SPINDLE SPEED (RPM) ______________________4,800
       AVERAGE LATENCY (mSEC) ___________________6.25
       INTERFACE ________________________________ESDI
       TPI (TRACKS PER INCH) ____________________1,600
       BPI (BITS PER INCH) ______________________29,378
       AVERAGE ACCESS (ms) ______________________12.9
       SINGLE TRACK SEEK (ms) ___________________2.5
       MAX FULL SEEK (ms) _______________________27
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +12V START-UP (amps) _4.5
                           +12V TYPICAL (amps) __2.0
                           +5V START-UP (amps) __1.2
                           +5V TYPICAL (amps) ___0.8
                           TYPICAL (watts) ______27
                           MAXIMUM (watts) ______
       BUFFERED STEP PULSE RATE (micro sec) _____
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________*

 * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING
   AND PARTITIONING SOFTWARE.  ALSO, CHECK TO SEE IF YOUR CMOS SETUP
   HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE.


   option will format to a capacity = Cyl*Hd*(SPT-1)*512 bytes

Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)