Seagate ST9300553SS Savvio 15K.3 SAS Product Manual - Page 32

Table 2, DC power requirements

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Table 2: 300GB models DC power requirements Parameter Voltage Regulation Avg idle current DC Standby Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Peak operating current: (random read) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (random write) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (sequential read) Typical DC Maximum DC Maximum (peak) DC Peak operating current: (sequential write) Typical DC Maximum DC Maximum (peak) DC Notes [5] [1] [7] 3σ 3σ [3] 3σ [3] 3σ [1] [4] [1] [6] 3σ [1] 3σ [1] 3σ [1] 3σ [1] 3σ [1] 3σ [1] 3σ [1] 3σ 3.0 Gb mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.38 0.20 0.31 0.06 0.67 1.04 1.05 1.93 0.56 0.06 0.51 0.46 0.57 0.48 1.49 1.32 0.60 0.38 0.67 0.40 1.26 1.33 0.89 0.25 0.97 0.25 1.21 0.50 1.05 0.25 1.10 0.25 1.40 0.41 6.0 Gb mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.38 0.20 0.31 0.05 0.67 1.04 1.05 1.96 0.56 0.06 0.50 0.46 0.57 0.48 1.43 1.36 0.59 0.38 0.66 0.40 1.26 1.34 0.89 0.25 0.97 0.25 1.31 0.48 1.05 0.25 1.10 0.25 1.40 0.42 24 Savvio 15K.3 SAS Product Manual, Rev. D

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24
Savvio 15K.3 SAS Product Manual, Rev. D
Table 2:
300GB models
DC power requirements
Notes
3.0 Gb mode
6.0 Gb mode
Parameter
(Amps)
(Amps)
(Amps)
(Amps)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[5]
±5%
±5% [2]
±5%
±5% [2]
Avg idle current DC
[1] [7]
0.38
0.20
0.38
0.20
Standby
3
σ
0.31
0.06
0.31
0.05
Maximum starting current
(peak DC) DC
3
σ
[3]
0.67
1.04
0.67
1.04
(peak AC) AC
3
σ
[3]
1.05
1.93
1.05
1.96
Delayed motor start (max) DC
3
σ
[1] [4]
0.56
0.06
0.56
0.06
Peak operating current: (random read)
Typical DC
[1] [6]
0.51
0.46
0.50
0.46
Maximum DC
3
σ
[1]
0.57
0.48
0.57
0.48
Maximum (peak) DC
3
σ
1.49
1.32
1.43
1.36
Peak operating current: (random write)
Typical DC
[1]
0.60
0.38
0.59
0.38
Maximum DC
3
σ
[1]
0.67
0.40
0.66
0.40
Maximum (peak) DC
3
σ
1.26
1.33
1.26
1.34
Peak operating current: (sequential read)
Typical DC
[1]
0.89
0.25
0.89
0.25
Maximum DC
3
σ
[1]
0.97
0.25
0.97
0.25
Maximum (peak) DC
3
σ
1.21
0.50
1.31
0.48
Peak operating current: (sequential write)
Typical DC
[1]
1.05
0.25
1.05
0.25
Maximum DC
3
σ
[1]
1.10
0.25
1.10
0.25
Maximum (peak) DC
3
σ
1.40
0.41
1.40
0.42