C
ONSTELLATION
ES.3 SAS P
RODUCT
M
ANUAL
, R
EV
. C
20
Table 2
4TB drive DC power requirements
N
OTES
3.0G
B MODE
6.0G
B MODE
(A
MPS
)
(A
MPS
)
(A
MPS
)
(A
MPS
)
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
