SEAGATE TECHNOLOGY, INC.
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                           (C)opyright 1991



ST-4769ES Wren Runner 2 FH ESDI

         �Data Cable                �Controller Cable     /�5�G�G�12\
        �������� ���           J11 �������������� ���    ͳ 0 0 0 0 ���
               o o o o o o o   o o   1����������Ŀ 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.

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


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