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any initiator overhead time. The values above are derived
from a representative sample of disk drives.
Track
to
track seek time is the mean value of
all
seek times
measured when performing all possible single track seeks.
Average random seek time is the time
to
do all possible
seeks divided by the number of seeks possible.
Maximum seek time is the time it takes to seek
1511
cylinders.
Head Switch Time
1 millisecond
Spin-up Time
From Power-on to Ready for Access:
Typical:
Maximum:
Rotational Latency
Average time:
Internal
Burst:
Data Transfer Rate
(Controller/Disk)
Sustained:
(Excludes
Controller Overhead)
External
Asynchronous:
Data Transfer Rate
(Host/Controller)
Synchronous:
DRAFT
10/24/90
10:54
10 seconds
13
seconds
8.33
ms
±0.5%
Inside Zone: 1.73 megabytes/s
(13.85
megabits/s)
Middle Zone:
2.16
megabytes/s
(17.25 megabits/s)
Outside Zone: 2.58 megabytes/s
(20.65
megabits/s)
Inside Zone: 10.92 megabits/s
Middle Zone:
13.65
megabits/s
Outside Zone:
16.44
megabits/s
1.5 megabytes/s
5.0 megabytes/s
Product Specifications
1·5
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