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Table 3 DC power requirements (4TB)
Notes 6.0Gb mode
Voltage +5V +12V Watts
Regulation ± 5% Total
Avg Idle Current * 0.21 0.35 5.23
Advanced Idle Current *
Idle_A 0.14 0.36 4.99
Idle_B 0.13 0.31 4.40
Idle_C 0.14 0.19 2.97
Standby 0.12 0.01 0.68
Maximum Start Current
DC (peak DC) 3 0.36 2.07 26.64
AC (Peak DC) 3 0.59 2.92 37.99
Delayed Motor Start (DC max) 3 0.13 0.01 0.72
Peak operating current (random read):
Typical DC 0.24 0.69 9.50
Maximum DC 3 0.25 0.75 10.25
Maximum DC (peak) 3 1.10 2.33 33.46
Peak operating current (random write)
Typical DC 0.24 0.50 7.21
Maximum DC 3 0.25 0.53 7.61
Maximum DC (peak) 3 1.31 2.41 35.47
Peak operating current (sequential read)
Typical DC 0.54 0.38 7.32
Maximum DC 3 0.57 0.40 7.65
Maximum DC (peak) 3 0.78 0.85 14.10
Peak operating current (sequential write)
Typical DC 0.47 0.41 7.29
Maximum DC 3 0.48 0.43 7.56
Maximum DC (peak) 3 0.72 1.22 18.24
Seagate Enterprise Capacity 3.5 HDD v4 Serial ATA Product Manual, Rev. C 8
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to
operational levels