Power Consumption; Direct Current Consumption By Voltage Rail - Seagate ST400FM0323 Product Manual

6.2

Power consumption

Power requirements for the drives are listed in the tables in Section 6.2.1. Typical power measurements are based on an average of
drives tested, under nominal conditions, using the listed input voltage at 60°C internal temperature.
• Startup power
Startup power is measured from the time of power-on to the time that the drive reaches operating condition and can process
media access commands.
• Peak operating mode
During peak operating mode, the drive is tested in various read and write access patterns to simulate the worst-case power con-
sumption.
• Idle mode power
Idle mode power is measured with the drive powered up and ready for media access commands, with no media access com-
mands having been received from the host.
6.2.1

Direct Current Consumption by Voltage Rail

Table 7 Mainstream Endurance 2.5" model DC power requirements
Parameter
[4]
Regulation
Voltage
[1]
Average idle current
Maximum starting current
(peak DC) DC
(peak AC) AC
[1] [3]
Delayed start (max) DC
Operating current (random read):
[1]
Typical DC
[1]
Maximum DC
Maximum (peak) DC
Operating current (random write)
Typical DC
Maximum DC
Maximum (peak) DC
Operating current (sequential read)
Typical DC
Maximum DC
Maximum (peak) DC
Operating current (sequential write)
Typical DC
Maximum DC
Maximum (peak) DC
Seagate 1200.2 SAS SSD Product Manual, Rev. A
3200GB (12.0Gb)
Mainstream Endurance
±5% ±5%
+5V +12V
Current (A) Current (A)
DC
0.59
0.94
2.05
3σ 0.54
DC 0.72
3σ 0.73
3σ 0.96
DC 0.79
3σ 0.81
3σ 1.56
DC 1.00
3σ 1.03
3σ 2.24
DC 0.98
3σ 1.00
3σ 2.14
[2]
[2]
Power (W)
0.20 5.40
0.61 12.06
1.01 22.37
0.24 5.50
0.23 6.32
0.24 6.53
0.50
0.44 9.28
0.47 9.69
0.94
0.35 9.15
0.38 9.66
0.62
0.69 13.15
0.74 13.86
1.44
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