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6.4
DC power requirements
The voltage and typical 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 1
DC power requirements (18TB & 16TB)
Voltage
Regulation
Avg idle current DCX
Advanced idle current
Idle A
Idle B
Idle C
Standby
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current (random read 4K16Q)
Typical DCX
Typical DCX, Power Balance enabled (~12W)
Typical DCX, Power Balance enabled (~11W)
Maximum DC
Maximum (peak) DC
Peak operating current (random write 4K16Q)
Typical DCX
Typical DCX, Power Balance enabled (~12W)
Typical DCX, Power Balance enabled (~11W)
Maximum DC
Maximum (peak) DC
Peak operating current (sequential read 256K16Q)
Typical DCX
Typical DCX, Power Balance enabled (~12W)
Typical DCX, Power Balance enabled (~11W)
Maximum DC
Maximum (peak) DC
Peak operating current (sequential write 256K16Q)
Typical DCX
Typical DCX, Power Balance enabled (~12W)
Typical DCX, Power Balance enabled (~11W)
Maximum DC
Maximum (peak) DC
Seagate Exos 2X18 SAS Product Manual, Rev. A
12.0Gb mode
Notes
(Amps)
(Amps)
+5V
+12V
[5]
± 5%
± 10%
[1][6]
0.69
0.36
[1]
0.68
0.36
[1]
0.55
0.19
[1]
0.55
0.13
[1]
0.51
0.02
[3]
1.21
1.48
[3]
1.36
2.00
[3]
0.81
0.18
[1] [8]
0.74
0.64
[7] [8]
0.74
0.64
[7] [8]
0.74
0.61
[1] [9]
0.77
0.66
[10]
1.46
2.81
[1] [8]
0.76
0.47
[7] [8]
0.76
0.47
[7] [8]
0.76
0.47
[1] [9]
0.79
0.49
[10]
1.29
2.13
[1] [8]
1.28
0.58
[7] [8]
1.15
0.50
[7] [8]
1.07
0.46
[1] [9]
1.35
0.61
[10]
1.58
1.91
[1] [8]
1.15
0.57
[7] [8]
1.04
0.51
[7] [8]
0.98
0.47
[1] [9]
1.20
0.59
[10]
1.44
1.85
Physical/electrical specifications
(Watts)
[2]
[2]
7.84
7.79
5.08
4.32
2.78
11.52
11.53
11.13
9.50
9.50
9.51
13.53
11.85
10.99
12.77
11.40
10.68
23
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