Seagate ST800FM0012 Pulsar.2 SAS Product Manual - Page 34

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Table 10: Parameter Regulation Voltage 400GB standard model DC power requirements 400GB (6.0Gb) ±5% +5V Current (A) ±5% +12V Current (A) 0.12 Power (W) 3.49 Average idle current Maximum starting current (peak DC) DC (peak AC) AC Delayed start (max) DC Peak operating current (random read): Typical DC Maximum DC Maximum (peak) DC Peak operating current (random write) Typical DC Maximum DC Maximum (peak) DC Peak operating current (sequential read) Typical DC Maximum DC Maximum (peak) DC Peak operating current (sequential write) Typical DC Maximum DC Maximum (peak) DC DC 0.41 3σ 3σ 3σ 0.50 0.54 0.45 0.35 0.60 0.13 3.81 DC 3σ 3σ 0.47 0.51 0.95 0.20 0.21 0.48 4.75 5.07 DC 3σ 3σ 0.47 0.52 0.93 0.44 0.46 1.11 7.63 8.12 DC 3σ 3σ 0.55 0.60 1.00 0.31 0.32 0.59 6.47 6.84 DC 3σ 3σ 0.46 0.52 0.91 0.44 0.48 1.14 7.58 8.36 26 Pulsar.2 SAS Product Manual, Rev. B

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26
Pulsar.2 SAS Product Manual, Rev. B
Table 10:
400GB standard model
DC power requirements
Parameter
400GB (6.0Gb)
Regulation
±5%
±5%
Voltage
+5V
+12V
Current (A)
Current (A)
Power (W)
Average idle current
DC
0.41
0.12
3.49
Maximum starting current
(peak DC) DC
3
σ
0.50
0.35
(peak AC) AC
3
σ
0.54
0.60
Delayed start (max) DC
3
σ
0.45
0.13
3.81
Peak operating current (random read):
Typical DC
DC
0.47
0.20
4.75
Maximum DC
3
σ
0.51
0.21
5.07
Maximum (peak) DC
3
σ
0.95
0.48
Peak operating current (random write)
Typical DC
DC
0.47
0.44
7.63
Maximum DC
3
σ
0.52
0.46
8.12
Maximum (peak) DC
3
σ
0.93
1.11
Peak operating current (sequential read)
Typical DC
DC
0.55
0.31
6.47
Maximum DC
3
σ
0.60
0.32
6.84
Maximum (peak) DC
3
σ
1.00
0.59
Peak operating current (sequential write)
Typical DC
DC
0.46
0.44
7.58
Maximum DC
3
σ
0.52
0.48
8.36
Maximum (peak) DC
3
σ
0.91
1.14