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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                            (C)opyright 1991



ST-125N SCSI

                                                 /---\
                                                 | O |12
                                                 | O |G
                                                 | O |G
                                                 | O |5
                       SCSI Connector            \---/
        =====P=W=A======================================
          o o o o o  |::::::::::::::::::::::::1|
          o o o o o  \=========================/
          4 2 1 | P /------1/------1/------1
          --+-- | | \------/\------/\------/
            |   | |    \ Resistor Termination Packs
            |   | |
            |   | \- Parity Check enable
            |   \--- Not Used
            \------- Drive ID's, ID 0 (none) for single drive system


                          ST - 125N

       UNFORMATTED CAPACITY (MB) ________________25
       FORMATTED CAPACITY (26 SECTORS) (MB) _____21.5
       ACTUATOR TYPE ____________________________STEPPER
       TRACKS ___________________________________1,628
       CYLINDERS ________________________________407
       HEADS ____________________________________4
       DISCS ____________________________________2
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbits/sec) ________________7.5
       SPINDLE SPEED (RPM) ______________________3,600
       INTERFACE ________________________________SCSI
       TPI (TRACKS PER INCH) ____________________824
       BPI (BITS PER INCH) ______________________16,546
       AVERAGE ACCESS (ms) ______________________40/28*
       SINGLE TRACK SEEK (ms) ___________________8
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.0
                           +12V TYPICAL (amps) __0.35
                           +5V TYPICAL (amps) ___0.9
                           TYPICAL (watts) ______9
                           MAXIMUM (watts) ______29
       BUFFERED STEP PULSE RATE (micro sec) _____3-200
       WRITE PRECOMP (cyl) ______________________N/A (408)
       REDUCED WRITE CURRENT (cyl) ______________N/A (408)
       LANDING ZONE (cyl)________________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       *ST125-0/ST125-1

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