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CONSTELLATION ES.3 SAS PRODUCT MANUAL, REV. B 22
Table 4 2TB 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] 0.33 0.34 0.33 0.34
Advanced idle current
Idle A
3s
0.33 0.34 0.34 0.34
Idle B
3s
0.24 0.31 0.25 0.31
Idle C
3s
0.24 0.19 0.24 0.19
Standby
3s
0.23 0.01 0.23 0.00
Maximum starting current
(peak DC) DC
3s [3]
0.62 2.16 0.64 2.15
(peak AC) AC
3s [3]
0.76 2.84 0.78 2.79
Delayed motor start (max) DC
3s [1] [4]
0.27 0.02 0.27 0.02
Peak operating current (random read):
Typical DCX [1] [6] 0.46 0.62 0.43 0.62
Maximum DC
3s
[1] 0.81 0.64 0.70 0.66
Maximum (peak) DC
3s
1.54 2.18 1.64 2.23
Peak operating current (random write)
Typical DCX
[1]
0.45 0.53 0.42 0.53
Maximum DC
3s [1]
0.81 0.54 0.69 0.56
Maximum (peak) DC
3s
0.99 2.18 1.24 2.22
Peak operating current (sequential read)
Typical DCX
[1]
0.70 0.39 0.70 0.39
Maximum DC
3s [1]
0.77 0.42 0.77 0.42
Maximum (peak) DC
3s
1.24 0.81 1.16 0.80
Peak operating current (sequential write)
Typical DCX
[1]
0.56 0.42 0.56 0.42
Maximum DC
3s [1]
0.60 0.45 0.62 0.46
Maximum (peak) DC
3s
0.72 2.50 0.76 2.02