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CONSTELLATION ES.3 SAS PRODUCT MANUAL, REV. B 20
Table 2 4TB drive DC power requirements
NOTES
3.0GB MODE 6.0GB MODE
(AMPS)(AMPS)(AMPS)(AMPS)
Voltage +5V +12V [2] +5V +12V [2]
Regulation [5] ± 5% [2] ± 5% [2]
Avg idle current DCX [1] [7] 0.40 0.51 0.37 0.51
Advanced idle current
Idle A
3s
0.35 0.51 0.36 0.50
Idle B
3s
0.25 0.44 0.28 0.43
Idle C
3s
0.25 0.25 0.25 0.25
Standby
3s
0.24 0.01 0.24 0.00
Maximum starting current
(peak DC) DC
3s [3]
0.63 2.16 0.63 2.16
(peak AC) AC
3s [3]
0.81 2.74 0.83 2.69
Delayed motor start (max) DC
3s [1] [4]
0.28 0.01 0.26 0.01
Peak operating current (random read):
Typical DCX [1] [6] 0.50 0.78 0.50 0.78
Maximum DC
3s
[1] 0.75 0.79 0.72 0.80
Maximum (peak) DC
3s
1.75 2.37 1.78 2.36
Peak operating current (random write)
Typical DCX
[1]
0.51 0.69 0.52 0.68
Maximum DC
3s [1]
0.76 0.71 0.80 0.71
Maximum (peak) DC
3s
1.13 2.29 1.13 2.50
Peak operating current (sequential read)
Typical DCX
[1]
0.83 0.55 0.82 0.55
Maximum DC
3s [1]
1.03 0.58 1.07 0.58
Maximum (peak) DC
3s
1.27 0.96 1.30 0.93
Peak operating current (sequential write)
Typical DCX
[1]
0.66 0.60 0.67 0.59
Maximum DC
3s [1]
0.69 0.62 0.69 0.63
Maximum (peak) DC
3s
0.80 2.20 0.84 2.40