User Manual

Seagate Enterprise Capacity 3.5 HDD v5 SAS Product Manual, Rev. F 27
Table 4 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 0.401 0.380 6.56
Advanced idle current
Idle A
3s
0.33 0.41 6.52 0.390 0.378 6.48
Idle B
3s
0.33 0.36 5.96 0.317 0.340 5.67
Idle C
3s
0.34 0.21 4.23 0.326 0.208 4.13
Standby
3s
0.32 0.01 1.64 0.307 0.006 1.60
Maximum starting current
(peak DC) DC
3s [3]
0.68 2.13 28.96 0.727 2.080 28.60
(peak AC) AC
3s [3]
0.90 2.71 1.016 2.760
Delayed motor start (max) DC
3s [1] [4]
0.36 0.03 0.368 0.072
Operating current (random read 4K16Q)
Typical DCX [1] [6] 0.44 0.68 10.39 0.436 0.721 10.83
Maximum DC
3s
[1] 0.52 0.72 0.441 0.726
Maximum (peak) DC
3s
1.54 2.38 1.155 2.313
Operating current (random write 4K16Q)
Typical DCX
[1]
0.44 0.59 9.32 0.448 0.694 10.57
Maximum DC
3s [1]
0.54 0.74 0.455 0.703
Maximum (peak) DC
3s
1.60 2.38 0.743 2.295
Operating current (sequential read 64K16Q)
Typical DCX
[1]
0.75 0.43 8.87 0.750 0.410 8.67
Maximum DC
3s [1]
0.86 0.45 0.757 0.414
Maximum (peak) DC
3s
1.12 2.58 0.988 1.824
Operating current (sequential write 64K16Q)
Typical DCX
[1]
0.63 0.44 8.48 0.669 0.429 8.49
Maximum DC
3s [1]
0.74 0.47 0.678 0.433
Maximum (peak) DC
3s
0.88 0.87 0.920 0.840