Seagate ST336807FC Cheetah 10K.7 FC Product Manual - Page 45

ST373207FC

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ST373207FC Typical power dissipation under idle conditions is 8.38 watts (28.60 BTUs per hour) during 1 Gbit operation. Typical power dissipation under idle conditions is 8.68 watts (29.62 BTUs per hour) during 2 Gbit operation. 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. Amperes ST373207FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads 1.800 18.00 1.600 16.00 1.400 14.00 1.200 12.00 1.000 10.00 0.800 8.00 0.600 6.00 0.400 4.00 0.200 2.00 0.000 0.0 0.00 50.0 100.0 150.0 200.0 250.0 300.0 I/Os per Second Power (watts) 5Vo lt A 12 Vo lt A Watts Amperes ST373207FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads 1.800 18.00 1.600 16.00 1.400 14.00 1.200 12.00 1.000 10.00 0.800 8.00 0.600 6.00 0.400 4.00 0.200 2.00 0.000 0.0 0.00 50.0 100.0 150.0 200.0 250.0 300.0 I/Os per Second Power (watts) 5Volt A 12 Vo lt A Watts Figure 10. ST373207FC DC current and power vs. input/output operations per second Cheetah 10K.7 FC Product Manual, Rev. D 33

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Cheetah 10K.7 FC Product Manual, Rev. D
33
ST373207FC
Typical power dissipation under idle conditions is 8.38 watts (28.60 BTUs per hour) during 1 Gbit operation.
Typical power dissipation under idle conditions is 8.68 watts (29.62 BTUs per hour) during 2 Gbit operation.
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.
Figure 10.
ST373207FC DC current and power vs. input/output operations per second
ST373207FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads
0.000
0.200
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I/Os per Second
Amperes
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Power (watts)
5Volt A
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ST373207FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads
0.000
0.200
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I/Os per Second
Amperes
0.00
2.00
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Power (watts)
5Volt A
12 Vo lt A
Watts