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SEAGATE ENTERPRISE CAPACITY 3.5 HDD V4 SAS PRODUCT MANUAL, REV. 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