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		 Miniscribe Disk Drive Specifications
				For
			    Model: 8051S
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     FORM FACTOR                              3.5 inch HH
     INTERFACE                                       SCSI
     DATA ENCODING METHOD                         2,7 RLL
     DATA TRANSFER RATE (MByte/Sec)                   1.0

     DISK DRIVE CHARACTERISTICS
	HEADS                                           4
	CYLINDERS
	   MICROCODE LEVEL I222C OR LOWER             739
	   MICROCODE LEVEL I250C OR HIGHER            793
	SECTORS/TRACK (512 Byte Sectors)               28
	UNFORMATTED BYTES/TRACK                    17,220
	RADIAL TRACK DENSITY (TPI)                  1,109
	ROTATIONAL SPEED (RPM)                      3,484
	FORMATTED CAPACITY (MBytes)
	   MICROCODE LEVEL I222C OR LOWER            42.4
	   MICROCODE LEVEL I250C OR HIGHER           45.5
     ACCESS TIMES (mSec)*
	SINGLE TRACK                                    8
	AVERAGE OF ALL POSSIBLE SEEKS                  28
	MAXIMUM                                        60
     *(INCLUDES SETTLING)

     POWER REQUIREMENTS
	DISSIPATION (Watts)
	   TYPICAL                                    8.0
	CURRENT (Amps)
	   +5 V DC (+ or - 5%)                        0.5
	   +12 V DC (+ or - 5%)                       0.5
	   MAXIMUM STARTUP CURRENT                    2.0

     PHYSICAL DIMENSIONS
	HEIGHT (in)                                 1.625
	WIDTH (in)                                      4
	DEPTH (in)                                   5.75
	WEIGHT (lbs)                                 1.43

     OPERATIVE ENVIRONMENTAL LIMITS
	MINIMUM TEMPERATURE (Centigrade)                5
	MAXIMUM TEMPERATURE (Centigrade)               50
	THERMAL GRADIENT (Degrees C/Hour)              10

     RELIABILITY
	MTBF (Hours)                               30,000
	MTTR (Minutes)                                 30
	COMPONENT DESIGN LIFE (Years)                   5