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February 2001:
HDD IDE (Ultra ATA/100)

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Quantum Fireball Plus AS Quantum lct20 Samsung SpinPoint V20400 Seagate Barracuda ATA III Seagate U5
Size
10.2/ 20.5/ 30.0/ 40.0/ 60.0 GBytes
10.0/ 20.0/ 30.0/ 40.0 GBytes
10.2/ 20.4/ 30.6/ 40.8 GBytes
10.2/ 15.3/ 20/ 30/ 40 GB
10/ 15/ 20/ 30/ 40 GBytes
Spindle rotation speed
7200 RPM
sub-7.200 RPM
5400 RPM
7200 RPM
5400 RPM
Buffer size
2 MBytes
128 KBytes
512 KBytes
2 MBytes
1 MBytes
Number of heads
1/2/3/4/6
1/2/3/4
1/2/3/4
1/2/2/3/4
1/2/2/3/4
Number of platter
1/1/2/2/3
1/1/2/2
1/1/2/2
1/1/1/2/2
1/1/1/2/2
Latency
4.17
?
5.56 ms
4.16 ms
5.6 ms
Average seek time (while reading)
8.5 ms
12.0 ms
9.0 ms
8.9 ms
8.9 ms
Average seek time track to track
0.8 ms
2.0 ms
0.8 ms
?
?
Average seek time full track while reading
17 ms
24 ms
17 ms
?
?

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