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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                            (C)opyright 1991



ST-2125N (94221-125) Wren 5 HH SCSI

                                                           Power
       SCSI Cable                             4 2 1 P   �12�G�G�5Ŀ
     ��������������������͸  A B C D E F G H  o o o o   � 0 0 0 0 �
     �:::::::::::::::::::1�  o o o o o o o o  o o o o   \���������/
    ����������������������������P�W�A������������������������������
                                                �   �     ڿ ڿ ڿ
    A-B Not used                                �   �     �� �� ��
    B-C Terminator power from Bus               �   �     �� �� ��
    C-D Terminator power from Drive             �   �     �1 �1 �1
    D-E Not used                                �   �     Terminator
    E-F Not used                                �   �     SIPs, pin-1
    F-G Continuous test seeks                   �   �     toward rear.
    G-H Motor Start option enable               �   �
                                                �   �� Parity check
                                                �
                                Drive Select ID �
                                (ID 0 for single
                                 drive system)


                             ST-2125N
                        94221-125/M WREN 5 HH

       UNFORMATTED CAPACITY (MB) ________________125
       FORMATTED CAPACITY (xx SECTORS) (MB) _____107
       AVERAGE SECTORS PER TRACK ________________45
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________4632
       CYLINDERS ________________________________1544
       HEADS ____________________________________3
       DISCS ____________________________________2
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (2,7)
       TRANSFER RATE (mbytes/sec) _______________1.125-1.875
       SPINDLE SPEED (RPM) ______________________3,600
       AVERAGE LATENCY (mSEC) ___________________8.33
       BUFFER ___________________________________32 Kbyte
         Read Look-Ahead, Non-Adaptive,
         Single-Segmented Buffer
       INTERFACE ________________________________SCSI
       TPI (TRACKS PER INCH) ____________________1280
       BPI (BITS PER INCH) ______________________19213
       AVERAGE ACCESS (ms) ______________________18
       SINGLE TRACK SEEK (ms) ___________________4
       MAX FULL SEEK (ms) _______________________40
       MTBF (power-on hours) ____________________100,000
       POWER REQUIREMENTS: +12V START-UP (amps) _4.5
                           +12V TYPICAL (amps) __0.9
                           +5V START-UP (amps) __1.3
                           +5V TYPICAL (amps) ___1.0
                           TYPICAL (watts) ______16
                           MAXIMUM (watts) ______61
       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 ________________________0 or NONE

Already low-level formatted at the factory.
ZBR = Zone Bit Recording = Variable sectors per track

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