AT&T 3B2/300 Technical Reference Manual page 106

EQUIPMENT D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
AT&T SCSI Rewritable Optical Disk Equipment Characteristics
Physical.
Height
Width
Depth
4.25 inches
12.8 inches
11.2 inches
If the optical disk is formatted to operate as a hard disk drive, the format is similar to the
WREN* III hard disk drives. The pertinent information is as follows:
Rotational Speed
Bytes /Sector
Sectors /Track
Tracks/Cylinder
Cylinders
Formatted Size
Operational.
Interface
Transfer Rate
Seek Time
Electrical.
Voltage
Frequency
Environmental.
Temperature
Humidity
2400 revolutions per minute
512
32
64
279 Accessible, 281 Total
571,392 blocks (512 bytes)
SCSI (Single-ended only)
5.44 megabits per second (680 kilobytes per second, read)
2.72 megabits per second (340 kilobytes per second, write)
95 milliseconds, average
185 milliseconds, maximum
120 V AC, 1.5 Amperes Domestic
240 V AC, 0.75 Amperes International
50/60 Hz
50°F to 104°F
10°C to 40°C
10% to 90%, noncondensing
• Registered trademark of Control Data Corp.
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