AT&T 3B2/300 Technical Reference Manual page 226

EQUIPMENT D E S C R I P T I O N - - - - - - - - - - - - - - - - - - - - - - - - - -
300-Megabyte Hard Disk (KS-23483,L 1 B or L 11 B)
300-Megabyte Hard Disk Equipment Characteristics
Reliability.
Life
Error Rates
Physical.
Disk Type
Rotational Speed
Height
Width
Depth
Bytes/Sector
Sectors /Track
Tracks/Cylinder
Cylinders
Formatted Size
Operational.
Interface
Transfer Rate
Latency
Seek Time
Default Device Partitioning
5 years or 150,000 hours
Recoverable (soft) read errors occur less than 1 in 10
10
bits transferred.
Unrecoverable (hard) read errors occur less than 1 in 10 12 bits
transferred.
5.25-inch, Winchester drive
3348 revolutions per minute
3.25 inches
5.75 inches
8.0 inches
512
32
12
1640 Accessible, 1642 Total
629,760 blocks (512 bytes)
SCSI (Ll B-Single-ended, Ll lB-Differential)
10.0 megabits per second (4 megabytes per second synchronous)
(1.5 megabytes per second asynchronous)
8.96 milliseconds, average
17.5 milliseconds, average
32 milliseconds, maximum
The default device partitioning for this disk drive depends on the configuration of the computer and
the release of the UNIX operating system.
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