Seagate Enterprise Performance 15K HDD Savvio 15K Savvio 15K.3 SAS Product Man - Page 38
GB models in 6Gb operation, 146GB models in 3Gb operation
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146GB models in 6Gb operation Typical power dissipation under idle conditions in 6Gb operation is 3.86 watts (13.17 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 5. 146GB models (6Gb) DC current and power vs. input/output operations per second 146GB models in 3Gb operation Typical power dissipation under idle conditions in 3Gb operation is 3.83 watts (13.07 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 6. 146GB models (3Gb) DC current and power vs. input/output operations per second 30 Savvio 15K.3 SAS Product Manual, Rev. E