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NL35 Series FC Product Manual, Rev. D
27
6.3 Power dissipation
Typical power dissipation under idle conditions is 10.49 watts (35.79 BTUs per hour) during 1 Gbit operation.
Typical power dissipation under idle conditions is 10.75 watts (36.68 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
2). 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 2. DC current and power vs. input/output operations per second (1 Gbit)
Figure 3. DC current and power vs. input/output operations per second (2 Gbit)
ST3500001FC DC CURRENT/POWER vs THROUGHPUT (1Gb) Random 8 Block Reads
0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0
I/Os per Second
Amperes
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
Power (watts)
5Volt A
12 V o lt A
Watts
ST3500001FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Reads
0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0
I/Os per Second
Amperes
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
Power (watts)
5Volt A
12 V o l t A
Watts