                         SEAGATE TECHNOLOGY, INC.
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                            (C)opyright 1991



ST-406 ST412 MFM

                       OPTION SHUNT BLOCK
                            \/Ŀ
                          1    R      16
                          2    NC     15
                          3    NC     14
                          4    NC     13
                          5    DS4    12
                          6    DS3    11
                          7    DS2    10
                          8    DS1    9
                            

                     DS1,DS2,DS3,DS4=DRIVE SELECTED
                         R=RADIAL OPERATION

                              ST - 406

       UNFORMATTED CAPACITY (MB) ________________6.38
       FORMATTED CAPACITY (17 SECTORS) (MB) _____5.0
       ACTUATOR TYPE ____________________________STEPPER
       TRACKS ___________________________________612
       CYLINDERS ________________________________306
       HEADS ____________________________________2
       DISCS ____________________________________1
       MEDIA TYPE _______________________________OXIDE
       RECORDING METHOD _________________________MFM
       TRANSFER RATE (mbits/sec) ________________5.0
       SPINDLE SPEED (RPM) ______________________3,600
       INTERFACE ________________________________ST412
       TPI (TRACKS PER INCH) ____________________345
       BPI (BITS PER INCH) ______________________9,074
       AVERAGE ACCESS (ms) ______________________85
       SINGLE TRACK SEEK (ms) ___________________< 16.67
       MTBF (power-on hours) ____________________11,000
       POWER REQUIREMENTS: +12V START-UP (amps) _3.5
                           +12V TYPICAL (amps) __1.6
                           +5V TYPICAL (amps) ___1.1
                           TYPICAL (watts) ______24.7
                           MAXIMUM (watts) ______50
       BUFFERED STEP PULSE RATE (micro sec) _____5-500
       WRITE PRECOMP (cyl) ______________________128
       REDUCED WRITE CURRENT (cyl) ______________N/A (307)
       LANDING ZONE (cyl)________________________319
       IBM AT DRIVE TYPE ________________________N/A

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