ST - 277N

       UNFORMATTED CAPACITY (MB) ________________N/A
       FORMATTED CAPACITY (26/34* SECTORS) (MB) _64.9
       ACTUATOR TYPE ____________________________STEPPER
       TRACKS ___________________________________4,920/3,768*
       CYLINDERS ________________________________820/628*
       HEADS ____________________________________6
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbits/sec) ________________7.5/10*
       INTERFACE ________________________________SCSI
       TPI (TRACKS PER INCH) ____________________777
       BPI (BITS PER INCH) ______________________14,902/19,869*
       AVERAGE ACCESS (ms) ______________________40/28*
       SINGLE TRACK SEEK (ms) ___________________8
       MTBF (power-on hours) ____________________45,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.0/2.5*
                           +12V TYPICAL (amps) __0.5
                           +5V TYPICAL (amps) ___1.2/1.4*
                           TYPICAL (watts) ______12/13*
                           MAXIMUM (watts) ______30/37*
       BUFFERED STEP PULSE RATE (micro sec) _____3-200
       WRITE PRECOMP (cyl) ______________________N/A (821/629*)
       REDUCED WRITE CURRENT (cyl) ______________N/A (821/629*)
       LANDING ZONE (cyl)________________________AUTO PARK
       IBM AT DRIVE TYPE ________________________N/A**

       *ST277N-0/ST277N-1
       **MAY REQUIRE PARTITIONING SOFTWARE