S
EAGATE
E
NTERPRISE
C
APACITY
3.5 HDD
V
4 SAS P
RODUCT
M
ANUAL
, R
EV
. A
22
Table 3
4TB drive DC power requirements
Notes
6.0Gb mode
12.0Gb mode
(Amps)
(Amps)
(Watts)
(Amps)
(Amps)
(Watts)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[5]
± 5% [2]
± 5% [2]
Avg idle current DCX
[1] [7]
0.33
0.41
6.52
0.35
0.41
6.64
Advanced idle current
Idle A
3s
0.33
0.41
6.52
0.35
0.41
6.65
Idle B
3s
0.33
0.36
5.96
0.35
0.36
6.08
Idle C
3s
0.34
0.21
4.23
0.36
0.21
4.34
Standby
3s
0.32
0.01
1.64
0.34
0.01
1.75
Maximum starting current
(peak DC) DC
3s
[3]
0.68
2.13
28.96
0.71
2.13
29.11
(peak AC) AC
3s
[3]
0.90
2.71
37.02
0.89
2.71
36.97
Delayed motor start (max) DC
3s
[1] [4]
0.36
0.03
2.16
0.38
0.02
2.14
Peak operating current (random read):
Typical DCX
[1] [6]
0.44
0.68
10.39
0.46
0.68
10.43
Maximum DC
3s
[1]
0.52
0.72
11.24
0.54
0.71
11.22
Maximum (peak) DC
3s
1.54
2.38
36.26
1.57
2.41
36.77
Peak operating current (random write)
Typical DCX
[1]
0.44
0.59
9.32
0.46
0.59
9.43
Maximum DC
3s
[1]
0.54
0.74
11.58
0.56
0.75
11.80
Maximum (peak) DC
3s
1.60
2.38
36.56
1.57
2.43
37.01
Peak operating current (sequential read)
Typical DCX
[1]
0.75
0.43
8.87
0.77
0.43
8.98
Maximum DC
3s
[1]
0.86
0.45
9.70
0.89
0.45
9.85
Maximum (peak) DC
3s
1.12
2.58
36.56
1.26
0.89
16.98
Peak operating current (sequential write)
Typical DCX
[1]
0.63
0.44
8.48
0.66
0.45
8.63
Maximum DC
3s
[1]
0.74
0.47
9.34
0.75
0.47
9.39
Maximum (peak) DC
3s
0.88
0.87
14.84
0.97
2.91
39.77
