Seagate Cheetah ST3146807LW, Руководство по эксплуатации продукта

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26 Cheetah 10K.6 SCSI Product Manual, Rev. D
6.3 Power dissipation
ST3146807
For drives using single-ended interface circuits, typical power dissipation under idle conditions is 10.3 watts
(35.1 BTUs per hour).
For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.6
watts (36.2 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see
Figures 8 and 9). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the cor-
resp5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour,
multiply watts by 3.4123.
Figure 8.
ST3146807
DC current and power vs. input/output operations per second (SE)
Figure 9.
ST3146807
DC current and power vs. input/output operations per second (LVD)
ST3146807 DC CURRENT/POWER vs THROUGHPUT (Single Ended)
Random 8 Block Reads
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
0.0 50.0 100.0 150.0 200.0 250.0
I/Os per Second
Amp
e
res
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
Po
w
e
r (w
atts)
5Vo lt A
12 Vo lt A
Watts
ST3146807 DC CURRENT/POWER vs THROUGHPUT (Low Voltage Differential)
Random 8 Block Reads
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
0.0 50.0 100.0 150.0 200.0 250.0
I/Os per Second
Ampe
re
s
4.00
6.00
8.00
10.00
12.00
14.00
16.00
18.00
Powe
r (wa
tts
)
5Vo lt A
12 Vo lt A
Watts