Seagate ST9900805SS Savvio 10K.4 FC Product Manual - Page 28

DC power requirements

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6.3 DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Notes are shown following Table 3. Table 2: DC power requirements for ST9600204FC model Notes Voltage Regulation [6] Avg idle current DC [1] [8] Advanced Idle Current Idle_A 3σ Idle_B 3σ Idle_C 3σ Standby 3σ Transition Current Idle_A - Active 3σ Idle_B - Active 3σ Idle_C - Active 3σ Standby - Active 3σ Maximum starting current (peak DC) DC 3σ [3] (peak AC) AC 3σ [3] Delayed motor start (max) DC 3σ [1] [5] Peak operating current (random read): Typical DC [1] [7] Maximum DC 3σ [1] Maximum (peak) DC 3σ Peak operatig current (random write) Typical DC Maximum DC 3σ Maximum (peak) DC 3σ Peak operating current (sequential read) Typical DC Maximum DC 3σ Maximum (peak) DC 3σ Peak operating current (sequential write) Typical DC Maximum DC 3σ Maximum (peak) DC 3σ 2Gb (Amps) +5V ±5% 0.36 0.35 0.25 0.25 0.25 0.72 0.66 0.70 0.70 0.56 0.78 0.57 0.43 0.44 1.12 0.47 0.50 1.00 0.85 0.87 1.14 0.81 0.82 1.02 (Amps) +12V [2] ±5% [2] 0.25 0.25 0.23 0.10 0.06 1.58 1.56 1.56 1.66 0.92 1.64 0.06 0.50 0.53 1.56 0.40 0.42 1.58 0.25 0.25 0.42 0.24 0.25 0.46 4Gb (Amps) +5V ±5% 0.38 0.38 0.28 0.27 0.27 0.76 0.68 0.74 0.72 0.58 0.78 0.59 0.45 0.46 1.12 0.50 0.52 1.04 0.88 0.90 1.18 0.83 0.84 1.06 (Amps) +12V [2] ±5% [2] 0.25 0.25 0.22 0.11 0.06 1.56 1.56 1.56 1.68 0.92 1.68 0.06 0.50 0.52 1.54 0.39 0.41 1.58 0.24 0.25 0.42 0.24 0.25 0.46 22 Savvio 10K.4 FC Product Manual, Rev. A

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22
Savvio 10K.4 FC Product Manual, Rev. A
6.3
DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive
connector. Notes are shown following Table 3.
Table 2:
DC power requirements for
ST9600204FC model
2Gb
4Gb
Notes
(Amps)
(Amps)
(Amps)
(Amps)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[6]
±5%
±5% [2]
±5%
±5% [2]
Avg idle current DC
[1] [8]
0.36
0.25
0.38
0.25
Advanced Idle Current
Idle_A
3
σ
0.35
0.25
0.38
0.25
Idle_B
3
σ
0.25
0.23
0.28
0.22
Idle_C
3
σ
0.25
0.10
0.27
0.11
Standby
3
σ
0.25
0.06
0.27
0.06
Transition Current
Idle_A - Active
3
σ
0.72
1.58
0.76
1.56
Idle_B - Active
3
σ
0.66
1.56
0.68
1.56
Idle_C - Active
3
σ
0.70
1.56
0.74
1.56
Standby - Active
3
σ
0.70
1.66
0.72
1.68
Maximum starting current
(peak DC) DC
3
σ
[3]
0.56
0.92
0.58
0.92
(peak AC) AC
3
σ
[3]
0.78
1.64
0.78
1.68
Delayed motor start (max) DC
3
σ
[1] [5]
0.57
0.06
0.59
0.06
Peak operating current (random read):
Typical DC
[1] [7]
0.43
0.50
0.45
0.50
Maximum DC
3
σ
[1]
0.44
0.53
0.46
0.52
Maximum (peak) DC
3
σ
1.12
1.56
1.12
1.54
Peak operatig current (random write)
Typical DC
0.47
0.40
0.50
0.39
Maximum DC
3
σ
0.50
0.42
0.52
0.41
Maximum (peak) DC
3
σ
1.00
1.58
1.04
1.58
Peak operating current (sequential read)
Typical DC
0.85
0.25
0.88
0.24
Maximum DC
3
σ
0.87
0.25
0.90
0.25
Maximum (peak) DC
3
σ
1.14
0.42
1.18
0.42
Peak operating current (sequential write)
Typical DC
0.81
0.24
0.83
0.24
Maximum DC
3
σ
0.82
0.25
0.84
0.25
Maximum (peak) DC
3
σ
1.02
0.46
1.06
0.46