Seagate ST9300553SS Savvio 15K.3 SAS Product Manual - Page 37

Power dissipation

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7.4 Power dissipation 300GB models in 6Gb operation Typical power dissipation under idle conditions in 6Gb operation is 4.23 watts (14.43 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). 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. Figure 3. 300GB models (6Gb) DC current and power vs. input/output operations per second 300GB models in 3Gb operation Typical power dissipation under idle conditions in 3Gb operation is 4.20 watts (14.33 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). 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. Figure 4. 300GB models (3Gb) DC current and power vs. input/output operations per second Savvio 15K.3 SAS Product Manual, Rev. D 29

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Savvio 15K.3 SAS Product Manual, Rev. D
29
7.4
Power dissipation
300GB models in 6Gb operation
Typical power dissipation under idle conditions in 6Gb operation is 4.23 watts (14.43 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
3). 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.
Figure 3.
300GB models (6Gb) DC current and power vs. input/output operations per second
300GB models in 3Gb operation
Typical power dissipation under idle conditions in 3Gb operation is 4.20 watts (14.33 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
3). 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.
Figure 4.
300GB models (3Gb) DC current and power vs. input/output operations per second