Figure 10. St373207Fc Dc Current And Power Vs. Input/Output Operations Per Second - Seagate ST336807FC - Cheetah 36 GB Hard Drive User Manual

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.
ST373207FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads
1 .800
1 .600
1 .400
1 .200
1 .000
0.800
0.600
0.400
0.200
0.000
0.0 50.0
ST373207FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads
1 .800
1 .600
1 .400
1 .200
1 .000
0.800
0.600
0.400
0.200
0.000
0.0 50.0
Figure 10. ST373207FC DC current and power vs. input/output operations per second
Cheetah 10K.7 FC Product Manual, Rev. D
1 00.0 1 50.0 200.0
I/Os per Second
1 00.0 1 50.0 200.0
I/Os per Second
1 8.00
5Vo lt A
1 2 Vo lt A
1 6.00
Watts
1 4.00
1 2.00
1 0.00
8.00
6.00
4.00
2.00
0.00
250.0 300.0
1 8.00
5Volt A
1 2 Vo lt A
1 6.00
Watts
1 4.00
1 2.00
1 0.00
8.00
6.00
4.00
2.00
0.00
250.0 300.0
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