User Manual

Seagate Enterprise Capacity 3.5 HDD v5 SAS Product Manual, Rev. G 26
6.2 AC power requirements
None.
6.3 DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the drive controller
ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and a commensurate
increase of about 150mW in power consumption. There is no additional drain on the 12V supply.
Table 3 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 0.401 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 4K 16Q)
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 4K 16Q)
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 64K 16Q)
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 64K 16Q)
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