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Cheetah NS 10K.2 SAS Product Manual, Rev. C 23
6.3 Power dissipation
ST3600002SS
Typical power dissipation under idle conditions in 6Gb operation is 10.03W (34.23 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. ST3600002SS (6 Gb) DC current and power vs. input/output operations per second
ST3450802SS
Typical power dissipation under idle conditions in 6Gb operation is 9.57W (32.66 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. ST3450802SS (6 Gb) DC current and power vs. input/output operations per second
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ST3600002SS CURRENT/POWER vs THROUGHPUT (SAS - 6.0GB)
Random 8 Block Reads
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ST3450802SS CURRENT/POWER vs THROUGHPUT (SAS - 6.0GB)
Random 8 Block Reads
5Volt A
12 Volt A
Watts