Seagate Barracuda 36ES ST318417N, Product Manual

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26 Barracuda 36ES Product Manual, Rev. H
ST318437
The drives typical power dissipation under idle conditions is 6.25 watts (21.3 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see
Figures 8 and 9). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the cor-
resp5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour,
multiply watts by 3.4123.
Figure 8. ST318437 and ST318417 DC current and power vs. input/output operations per second (SE)
Figure 9. ST318437 DC current and power vs. input/output operations per second (LVD)
I/Os per Second
Amperes
Watts
I/Os per Second
Amperes
Watts