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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)
??????????????????????????????????????????????????????????????????????
? United States    +1 408 438-8771 ?  United Kingdom +44 628 478011  ?
??????????????????????????????????????????????????????????????????????
? Germany         +49  89 140-9331 ?  Singapore      +65   227-2217  ?
??????????????????????????????????????????????????????????????????????
                            (C)opyright 1991



ST-1156E (94356-155) Swift ESDI

     ????\
     ? 0 ?  5    ??? Drive Selects
     ? 0 ?  G  ?????
     ? 0 ?  G  1 2 4                                   ?? Located on rear
     ? 0 ? 12  o o o                                   ?  side of drive
     ????/     o o o     ? Control Cable               ?
     ???????? ??   ?????????????? ???             ???????????
      ?                1?????1?????                o o o o o
      ?Data Cable       Terminators                o o o o o   (front)
                                                   M S ? ? Ext
                                                   ? ? ? ? ?
                                                   ? ? ? ? ?
                       Motor Start option enable ??? ? ? ? ?
                       Soft Sector option enable  ???? ? ? ?
                                                       ? ? ?
                               B/Sec        Sectors    ? ? ?      0=open
                               ?????????????????????   | | ?      1=closed
                               Test Only  ?            1 1 ?
                               512        ?34          1 0 ? = 130,629,632
                               512        ?36          0 0 ? = 138,313,728
                               256        ?64          0 1 ?
                                                           ?
                       External Spindle clock  ?????????????


                             ST-1156E
                          94356-155 Swift

       UNFORMATTED CAPACITY (MB) ________________155
       FORMATTED CAPACITY (36 SECTORS) (MB) _____138 **
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________7,504
       CYLINDERS ________________________________1,072
       HEADS ____________________________________7
       DISCS ____________________________________4
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbytes/sec) _______________1.25
       SPINDLE SPEED (RPM) ______________________3,600
       INTERFACE ________________________________ESDI
       TPI (TRACKS PER INCH) ____________________1,350
       BPI (BITS PER INCH) ______________________28,103
       AVERAGE ACCESS (ms) ______________________15
       SINGLE TRACK SEEK (ms) ___________________4
       MTBF (power-on hours) ____________________70,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.5
                           +12V TYPICAL (amps) __0.7
                           +5V START-UP (amps) __0.75
                           +5V TYPICAL (amps) ___0.4
                           TYPICAL (watts) ______11
                           MAXIMUM (watts) ______33.75
       BUFFERED STEP PULSE RATE (micro sec) _____6-200
       WRITE PRECOMP (cyl) ______________________N/A (1073)
       REDUCED WRITE CURRENT (cyl) ______________N/A (1073)
       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.


	
* ESDI controllers which offer an Alternate/Spare sector per track


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


                          Swift Remote LED Option

               Front View of Drive Without the Plastic Bezel

                                  ?????????
                                  ? A ? B ?    B = Anode
                                  ?????????    D = Cathode
                                  ? C ? D ?
              ...???????????????????????????????P?W?A???...


        ? Default jumper at C-D for LED mounted on drive PWA
        ? To use remote LED, remove jumper and extend B (Anode)
          and D (Cathode).
        ? Swift LED kit 75912397 allows connection to a remote LED
        ? Swift LED kit 95913369 has an LED for attachment to the
          system front bezel or a 5.25-inch frame kit

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