Seagate Barracuda 18LP ST318275LC, Product Manual

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22 Barracuda 18LP Product Manual, Rev. E
6.3 Power dissipation
To obtain drive typical operating random read (8 blocks) power dissipation at nominal voltages, refer to Figures
3c and 3d. The drive user can decide for themselves what number of I/O operations constitutes a typical num-
ber of I/O operations for their installation. Multiply Watts times 3.4123 to obtain BTUs per hour. Typical power
dissipation under idle conditions is 9.75 Watts (33.27 BTUs per hour).
Figure 3c. DC current and power vs. input/output operations per second for ST318275 drives (LVD only)
Figure 3d. DC current and power vs. input/output operations per second for ST318275 drives (SE only)
0
8 12 21 31
I/Os per Second
Amperes
46 63 84 131 147 148
0.2
0.4
0.6
0.8
10
Watts
12
14
1.0
1.2
5V A
12V A
Watts
0
0 20 40 60
I/Os per Second
Amperes
80 100 120 140 160
0.2
0.4
0.6
0.8
10
Watts
12
14
1.0
1.2
5V A
12V A
Watts