Key features:
Compact half-height size.
1.0 or 1.6Mb storage capacity (unformatted).
Backward compatibility to 48 t.p.i.
3ms track to track access time.
Brushless dual-speed direct-drive
motor.
Low power consumption.
10,000 hours MTBF.
Dual read channels.
250/300/500 Kbits/transfer rate.
1.2
Specification summary
1.2.1
Performance specifications
Mini mode
Maxi mode
(Low transfer rate)
(High transfer rate)
Capacity (bytes)
Unformatted (MFM)
Per drive
1,000,000
1,666,666/1,604,167
Per surface
500,000
833,333/802,083
Per track
6,250
10,416
Unformatted (FM)
Per drive
500,000
833,333/802,083
Per surface
250,000
416,666/401,041
Per track
3,125
5,208
IBM format (MFM)
16 sectors/track
15 sectors/track
Per drive
655,360
1,228,800/1,182,720
Per surface
327,680
614,400/591,360
Per track
4,096
7,680
Per sector
256
512
IBM format (FM)
16 sectors/track
15 sectors/track
Per drive
327,680
614,400/591,360
Per surface
163,840
307,200/295,680
Per track
2,048
3,840
Per sector
128
256
Transfer rate (Kbits/sec)
MFM recording
250/300
500
FM recording
125/150
250
Access time (ms)
Track to track
3
3
Settle time
15
15
Average access
94
94/91
Average latency
100/83
83
Motor start time
500
500
Motor speed change time
500
500
*IBM is the registered trade mark of International Business Machines; IBM Corp
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Leaflet No. 9419 26/4/97 6:09 pm Page 2
