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CONSTELLATION ES.1 SAS PRODUCT MANUAL, REV. G 20
Table 3 1TB drive (Standard & SED model) DC power requirements
Notes
3.0Gb mode 6.0Gb mode
(Amps) (Amps)
Voltage +5V +12V [4] +5V +12V [4]
Regulation [5] ±5% ±5% [2] ±5% ±5% [2]
Avg idle current DC
X [1] [7] 0.35 0.28 0.36 0.28
Advanced idle current
Idle_A 0.35 0.28 0.36 0.28
Idle_B 0.24 0.25 0.24 0.25
Idle_C/ Standby_Y 0.24 0.14 0.24 0.14
Standby_Z 0.25 0.02 0.25 0.02
Transition current
Idle_A - Active 0.60 1.52 0.60 1.50
Idle_B - Active 0.64 1.43 0.60 1.40
Idle_C - Active 0.60 2.04 0.60 2.11
Standby - Active 0.90 2.50 0.88 2.49
Maximum starting current
(peak DC) DC 3s [5] 0.57 1.93 0.58 1.93
(peak AC) AC 3s [5] 0.92 2.62 1.08 2.55
Delayed motor start (max) DC 3s [1] [6] 0.39 0.02 0.39 0.02
Peak operating current (random read):
Typical DC
X [1] [6] 0.43 0.45 0.44 0.47
Maximum DC 3s [1] 0.44 0.48 0.45 0.50
Maximum (peak) DC 3s 1.17 1.56 1.14 1.55
Peak operating current (random write)
Typical DC
X 0.53 0.35 0.53 0.36
Maximum DC 3s 0.55 0.38 0.55 0.38
Maximum (peak) DC 3s 1.30 1.59 1.32 1.54
Peak operating current (sequential read)
Typical DC
X 0.77 0.27 0.77 0.27
Maximum DC 3s 0.80 0.28 0.81 0.29
Maximum (peak) DC 3s 1.06 0.64 1.09 0.51
Peak operating current (sequential write)
Typical DC
X 0.94 0.27 0.94 0.27
Maximum DC 3s 1.02 0.28 1.03 0.29
Maximum (peak) DC 3s 1.37 0.54 1.36 0.48