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ST-412.TXT
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1988-04-15
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29 lines
ST - 412
UNFORMATTED CAPACITY (MB) ________________12.76
FORMATTED CAPACITY (32 SECTORS) (MB) _____10.0
ACTUATOR TYPE ____________________________STEPPER
TRACKS ___________________________________1,224
CYLINDERS ________________________________306
HEADS ____________________________________4
DISCS ____________________________________2
MEDIA TYPE _______________________________OXIDE
RECORDING METHOD _________________________MFM
TRANSFER RATE (mbits/sec) ________________5.0
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) __1.7
+5V TYPICAL (amps) ___1.1
TYPICAL (watts) ______25.9
MAXIMUM (watts) ______50.5
BUFFERED STEP PULSE RATE (micro sec) _____5-500
WRITE PRECOMP (cyl) ______________________128
REDUCED WRITE CURRENT (cyl) ______________N/A (307)
LANDING ZONE (cyl)________________________320
IBM AT DRIVE TYPE ________________________1