Product manual

Constellation ES.3 Serial ATA Product Manual, Rev. E 9
*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.
Table 2 4TB Drive DC power requirements
Notes 6.0Gb mode
Voltage +5V +12V
Regulation ± 5%
Avg Idle Current * 0.28 0.50
Advanced Idle Current *
Idle_A 0.17 0.49
Idle_B 0.16 0.45
Idle_C 0.15 0.27
Standby 0.15 0.01
Maximum Start Current
DC (peak DC) 3 0.52 2.16
AC (Peak DC) 3 0.85 2.89
Delayed Motor Start (DC max) 3 0.16 0.01
Peak operating current (random read):
Typical DC 0.31 0.81
Maximum DC 3 0.32 0.84
Maximum DC (peak) 3 1.83 2.43
Peak operating current (random write)
Typical DC 0.30 0.78
Maximum DC 3 0.32 0.79
Maximum DC (peak) 3 0.78 2.39
Peak operating current (sequential read)
Typical DC 0.63 0.56
Maximum DC 3 0.66 0.57
Maximum DC (peak) 3 1.36 2.20
Peak operating current (sequential write)
Typical DC 0.55 0.60
Maximum DC 3 0.57 0.61
Maximum DC (peak) 3 1.40 2.18