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ST-251N.TXT
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1989-03-09
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ST - 251N
UNFORMATTED CAPACITY (MB) ________________N/A
FORMATTED CAPACITY (26/34* SECTORS) (MB) _43.1/43.2*
ACTUATOR TYPE ____________________________STEPPER
TRACKS ___________________________________3,280/2,520*
CYLINDERS ________________________________820/630*
HEADS ____________________________________4
DISCS ____________________________________2
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 (821/630*)
REDUCED WRITE CURRENT (cyl) ______________N/A (821/630*)
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________N/A**
*ST251N-0/ST251N-1
**MAY REQUIRE PARTITIONING SOFTWARE