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                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1991



ST-125N SCSI

                                                 /ΔΔΔΏ
                                                 ³ O ³12
                                                 ³ O ³G
                                                 ³ O ³G
                                                 ³ O ³5
                       SCSI Connector            \ΔΔΔΩ
        ΝΝΝΝΝPΝWΝAΝΝΝΡΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΡΝΝΝΝΝΝΝΝ
          o o o o o  ³::::::::::::::::::::::::1³
          o o o o o  ΤΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΎ
          4 2 1 ³ P ΪΔΔΔΔΔΔ1ΪΔΔΔΔΔΔ1ΪΔΔΔΔΔΔ1
          ΔΔΒΔΔ ³ ³ ΐΔΔΔΔΔΔΩΐΔΔΔΔΔΔΩΐΔΔΔΔΔΔΩ
            ³   ³ ³    ΐ Resistor Termination Packs
            ³   ³ ³
            ³   ³ ΐΔ Parity Check enable
            ³   ΐΔΔΔ Not Used
            ΐΔΔΔΔΔΔΔ 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)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/scsi/st125n.txt.