Seagate ST9900805SS Savvio 10K.1 FC Product Manual - Page 37

ST936701FC

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ST936701FC Typical power dissipation under idle conditions in 1Gb operation is 6.2 watts (21.2 BTUs per hour). Typical power dissipation under idle conditions in 2Gb operation is 6.5 watts (22.2 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). 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. ST936701FC DC CURRENT/POWER vs THROUGHPUT (1GB) Random 8 Block Reads 1.200 12.00 5Vo lt A 12 Volt A 1.000 10.00 Watts Amperes Power (watts) 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 Figure 8. ST936701FC DC current and power vs. input/output operations per second at 1 Gbit ST936701FC DC CURRENT/POWER vs THROUGHPUT (2GB) Random 8 Block Reads 1.200 12.00 5Vo lt A 12 Volt A 1.000 10.00 Watts Amperes Power (watts) 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 Figure 9. ST936701FC DC current and power vs. input/output operations per second at 2 Gbit Savvio FC Product Manual, Rev. D 31

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Savvio FC Product Manual, Rev. D
31
ST936701FC
Typical power dissipation under idle conditions in 1Gb operation is 6.2 watts (21.2 BTUs per hour).
Typical power dissipation under idle conditions in 2Gb operation is 6.5 watts (22.2 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
6). 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 8. ST936701FC DC current and power vs. input/output operations per second at 1 Gbit
Figure 9. ST936701FC DC current and power vs. input/output operations per second at 2 Gbit
ST936701FC DC CURRENT/POWER vs THROUGHPUT (1GB)
Random 8 Block Reads
0.000
0.200
0.400
0.600
0.800
1.000
1.200
0.0
50.0
100.0
150.0
200.0
250.0
300.0
I/Os per Second
Amperes
0.00
2.00
4.00
6.00
8.00
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12.00
Power (watts)
5Volt A
12 Volt A
Watts
ST936701FC DC CURRENT/POWER vs THROUGHPUT (2GB)
Random 8 Block Reads
0.000
0.200
0.400
0.600
0.800
1.000
1.200
0.0
50.0
100.0
150.0
200.0
250.0
300.0
I/Os per Second
Amperes
0.00
2.00
4.00
6.00
8.00
10.00
12.00
Power (watts)
5Volt A
12 Volt A
Watts