IBM IC35L036UWDY10 Hard Drive Specifications - Page 30

Drive ready time, 5.4 Spindle stop time, 5.2.3 Cylinder switch time cylinder skew

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4.5.2.3 Cylinder switch time (cylinder skew) Cylinder skew Typical (ms) 0.70 Figure 9. Cylinder Skew A cylinder switch time is defined as the amount of time required by the fixed disk to access the next sequential block after reading the last sector in the current cylinder. 4.5.2.4 Head switch time (head skew) Head skew Typical (ms) 0.63 Figure 10. Head skew A head switch time is defined as the amount of time required by the fixed disk to access the next sequential block after reading the last sector in the current track. 4.5.2.5 Average latency Rotation 10,000 RPM Time for a revolution (ms) 6.0 Figure 11. Latency time Average Latency (ms) 3.0 4.5.3 Drive ready time Model 146-GB Model 73-GB Model 36-GB Model 18-GB Model Typical (sec) 18.0 15.0 12.0 11.0 Figure 12. Drive ready time Maximum (sec) 29.9 29.9 29.9 29.9 4.5.4 Spindle stop time Model 146-GB Model 73-GB Model 36-GB Model 18-GB Model Typical (sec) 20 14 14 14 Maximum (sec) 30 30 30 30 Figure 13. Spindle stop time The period from power off to complete stop of spindle is categorized as operating, and Operating Shock criteria are applied until complete stop of spindle. Refer to Section 7.8.3, "Operating Shock" on page 42. Ultrastar 146Z10 hard disk drive specifications 14

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4.5.2.3 Cylinder switch time (cylinder skew)
0.70
Cylinder skew
Typical (ms)
Figure 9.
Cylinder Skew
A cylinder switch time is defined as the amount of time required by the fixed disk to access the next
sequential block after reading the last sector in the current cylinder.
4.5.2.4 Head switch time (head skew)
0.63
Head skew
Typical (ms)
Figure 10.
Head skew
A head switch time is defined as the amount of time required by the fixed disk to access the next
sequential block after reading the last sector in the current track.
4.5.2.5 Average latency
3.0
6.0
10,000 RPM
Average Latency
(ms)
Time for a revolution
(ms)
Rotation
Figure 11.
Latency time
4.5.3 Drive ready time
29.9
11.0
18-GB Model
29.9
12.0
36-GB Model
29.9
15.0
73-GB Model
29.9
18.0
146-GB Model
Maximum (sec)
Typical (sec)
Model
Figure 12.
Drive ready time
4.5.4 Spindle stop time
30
14
18-GB Model
30
14
36-GB Model
30
14
73-GB Model
30
20
146-GB Model
Maximum (sec)
Typical (sec)
Model
Figure 13.
Spindle stop time
The period from power off to complete stop of spindle is categorized as operating, and Operating Shock
criteria are applied until complete stop of spindle.
Refer to Section 7.8.3, "Operating Shock" on page 42.
Ultrastar 146Z10 hard disk drive specifications
14