Seagate ST373405LW/LWV/LC/LCV ユーザーズマニュアル
Cheetah 73LP Product Manual, Rev. E
25
6.3
Power dissipation
ST373405
For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.9 watts
(33.8 BTUs per hour).
(33.8 BTUs per hour).
For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.2
watts (34.8 BTUs per hour).
watts (34.8 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see
Figures 7 and 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the cor-
responding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour,
multiply watts by 3.4123.
Figures 7 and 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the cor-
responding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour,
multiply watts by 3.4123.
Figure 7.
ST373405 DC current and power vs. input/output operations per second (SE)
Figure 8.
ST373405 DC current and power vs. input/output operations per second (LVD)
1.800
0
50
100
I/Os per Second
Amperes
200
250
0.400
0.600
0.800
1.000
11
Watts
13
15
17
1.200
1.600
1.400
150
5V A
12V A
Watts
12V A
Watts
1.800
0
50
100
I/Os per Second
Amperes
200
250
0.400
0.600
0.800
1.000
11
Watts
13
15
17
1.200
1.600
1.400
150
5V A
12V A
Watts
12V A
Watts