Figure 9. St373454Fc Dc Current And Power Vs. Input/Output Operations Per Second - Seagate 15K.4 - Cheetah - Hard Drive Product Manual

ST373454FC
Typical power dissipation under idle conditions in 2Gb operation is 11.49 watts (39.21 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5
volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by
3.4123.
ST373454LC Specification random 8 block read, 2Gb
1 .800
1 .600
1 .400
1 .200
1 .000
0.800
0.600
0.400
0.200
0.000
0.0 50.0
Figure 9. ST373454FC DC current and power vs. input/output operations per second
Cheetah 15K.4 FC Product Manual, Rev. C
1 00.0 1 50.0 200.0
I/Os per Second
250.0 300.0 350.0
1 8.00
5Vo lt A
1 2 Vo lt A
1 6.00
Watts
1 4.00
1 2.00
1 0.00
8.00
6.00
4.00
2.00
0.00
400.0
31