Seagate ST3300457FC Cheetah 15K.7 SAS Product Manual - Page 28

Table 14, DC power requirements

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Table 14: 450 GB DC power requirements Voltage Regulation 3 Gbit mode Notes (Amps) (Amps) +5V +12V [2] [5] ±5% ±5% [2] Avg idle current Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Peak operating current (random read): Typical DC Maximum DC Maximum DC (peak) Peak operating current (random write): Typical DC Maximum DC Maximum DC (peak) Peak operating current (sequential read): [1] [7] 0.39 0.68 3σ [3] 0.65 1.94 3σ [3] 0.94 3.91 3σ [1] [4] 0.54 0.04 [1][6] [1] 0.45 1.01 3σ [1] 0.48 1.08 3σ 1.28 2.90 [1][6] [1] 0.52 0.90 3σ [1] 0.56 0.93 3σ 1.24 2.78 Typical DC Maximum DC Maximum DC (peak) Peak operating current (sequential write): [1][6] [1] 0.98 0.69 3σ [1] 1.04 0.70 3σ 1.36 1.10 Typical DC Maximum DC Maximum DC (peak) [1][6] [1] 0.95 0.69 3σ [1] 0.99 0.70 3σ 1.26 1.10 6 Gbit mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.41 0.66 0.67 1.94 0.96 3.89 0.56 0.04 0.47 1.02 0.51 1.06 1.30 2.84 0.55 0.89 0.58 0.91 1.26 2.84 1.03 0.67 1.10 0.68 1.44 1.10 0.98 0.67 1.02 0.68 1.30 1.12 22 Cheetah 15K.7 SAS Product Manual, Rev. C

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22
Cheetah 15K.7 SAS Product Manual, Rev. C
Table 14:
450 GB
DC power requirements
Notes
3 Gbit mode
6 Gbit mode
(Amps)
(Amps)
(Amps)
(Amps)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[5]
±5%
±5% [2]
±5%
±5% [2]
Avg idle current
[1] [7]
0.39
0.68
0.41
0.66
Maximum starting current
(peak DC) DC
3
σ
[3]
0.65
1.94
0.67
1.94
(peak AC) AC
3
σ
[3]
0.94
3.91
0.96
3.89
Delayed motor start (max) DC
3
σ
[1] [4]
0.54
0.04
0.56
0.04
Peak operating current (random read):
Typical DC
[1][6]
[1]
0.45
1.01
0.47
1.02
Maximum DC
3
σ
[1]
0.48
1.08
0.51
1.06
Maximum DC (peak)
3
σ
1.28
2.90
1.30
2.84
Peak operating current (random write):
Typical DC
[1][6]
[1]
0.52
0.90
0.55
0.89
Maximum DC
3
σ
[1]
0.56
0.93
0.58
0.91
Maximum DC (peak)
3
σ
1.24
2.78
1.26
2.84
Peak operating current (sequential read):
Typical DC
[1][6]
[1]
0.98
0.69
1.03
0.67
Maximum DC
3
σ
[1]
1.04
0.70
1.10
0.68
Maximum DC (peak)
3
σ
1.36
1.10
1.44
1.10
Peak operating current (sequential write):
Typical DC
[1][6]
[1]
0.95
0.69
0.98
0.67
Maximum DC
3
σ
[1]
0.99
0.70
1.02
0.68
Maximum DC (peak)
3
σ
1.26
1.10
1.30
1.12