SEAGATE TECHNOLOGY, INC.
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                           (C)opyright 1991



ST-4144R ST412 RLL

                                                         �12�G�G�5Ŀ
                                                         � 0 0 0 0 �
�Data Cable                    �Controller Cable   1     \�1�2�3�4�/
��������� ��                 �������������������� ���   ������������
             o o o o o o o o       1�����������Ŀ
             o o o o o o o o       ��������������
Drive Select->1 2 3 4 � � � �          �Resistor Termination Pack
               � � � � � � �
               � ��� � � � �
               �  �  � � � � Radial
               �  �  � � ��� Recovery Mode
               �  �  � ����� Write Fault
               �  �  ������� Not Connected
               �  ���������� Never Used (Drive Select 3 and 4)
               � If twisted cable, use Drive Select 2


                             ST - 4144R

      UNFORMATTED CAPACITY (MB) ________________144.0
      FORMATTED CAPACITY (26 SECTORS) (MB) _____122.7
      ACTUATOR TYPE ____________________________VOICE COIL
      TRACKS ___________________________________9,216
      CYLINDERS ________________________________1,024
      HEADS ____________________________________9
      DISCS ____________________________________5
      MEDIA TYPE _______________________________THIN FILM
      RECORDING METHOD _________________________RLL (2,7)
      TRANSFER RATE (mbits/sec) ________________7.5
      SPINDLE SPEED (RPM) ______________________3,600
      AVERAGE LATENCY (mSEC) ___________________8.3
      INTERFACE ________________________________ST412
      SECTORS PER DRIVE ________________________239,616
      TPI (TRACKS PER INCH) ____________________1,031
      BPI (BITS PER INCH) ______________________14,688
      AVERAGE ACCESS (ms) ______________________28
      SINGLE TRACK SEEK (ms) ___________________6
      MAX FULL SEEK (ms) _______________________55
      MTBF (power-on hours) ____________________40,000
      POWER REQUIREMENTS: +12V START-UP (amps) _4.0
                          +12V TYPICAL (amps) __1.3
                          +5V TYPICAL (amps) ___1.3
                          TYPICAL (watts) ______23
                          MAXIMUM (watts) ______55
      BUFFERED STEP PULSE RATE (micro sec) _____3-70
      WRITE PRECOMP (cyl) ______________________N/A (1025)
      REDUCED WRITE CURRENT (cyl) ______________N/A (1025)
      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.

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


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