                              ST - 4053

       UNFORMATTED CAPACITY (MB) ________________53.3
       FORMATTED CAPACITY (17 SECTORS) (MB) _____44.5
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________5,120
       CYLINDERS ________________________________1,024
       HEADS ____________________________________5
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________MFM
       TRANSFER RATE (mbits/sec) ________________5.0
       INTERFACE ________________________________ST412
       TPI (TRACKS PER INCH) ____________________1,031
       BPI (BITS PER INCH) ______________________9,792
       AVERAGE ACCESS (ms) ______________________28
       SINGLE TRACK SEEK (ms) ___________________6
       MTBF (power-on hours) ____________________30,000
       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 ________________________11 or 17*

       *MAY REQUIRE PARTITIONING SOFTWARE
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