Specifications

System B Installation, Use, and Maintenance Manual
1.4 Micropolis floppy diskette subsystem specifications
PERFORMANCE
eapaci ty per drive: 315K bytes, fo rrnated
Transfer rate: 253K bits/second
Average rotational latency time: 100 milliseconds
Access t~e - track-to-track : 30 milliseconds
Settling time: 10 milliseconds
Head load t~e: 75 milliseconds
Head positioner: stepper motor with lead-screw drive
Drive motor start time: 1 second
Rotational speed: 300 RPM
Recording density 5248 bi ts per inch (BPI)
Recording mode: MPM
Track density: 100 tracks per inch (TPI)
Surfaces used per diskette: 1
RELIABILITY
M'lBF
MTTR
Media life
Head life
Soft error rate
Hard error rate
Seek error rate
Rev. A 1/17/80
8000 hrs.
0.5 hrs.
3 X 10 EXP 6 passes on single track
10 EXP 4 hrs.
1 in 10 EXP 9
1
in HI EXP 12
1 in 10 EXP 6
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