Seagate ST31000424SS ユーザーズマニュアル
30
Constellation ES Series SAS Product Manual, Rev. E
7.4
Power dissipation
2TB models in 3Gb operation
Please refer to Table 2 for power dissipation numbers.
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure
4). 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.
4). 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 4.
2TB models (3Gb) DC current and power vs. input/output operations per second
Note.
For power details about SED vs. non-SED drive, please refer to section 7.8.
0
1
2
3
4
5
6
7
8
9
10
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
20
40
60
80
100
120
140
160
P
o
w
e
r (
w
a
tt
s
)
A
m
p
e
re
s
I/Os per Second
ST32000444SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB)
Random 8 Block Reads
5Volt A
12 Volt A
Watts