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22 Cheetah 15K.7 SAS Product Manual, Rev. D
Table 15:
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 3σ [3]0.651.940.671.94
(peak AC) AC 3σ [3]0.943.910.963.89
Delayed motor start (max) DC 3σ [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 3σ [1]0.481.080.511.06
Maximum DC (peak) 3σ 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 3σ [1]0.560.930.580.91
Maximum DC (peak) 3σ 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 3σ [1]1.040.701.100.68
Maximum DC (peak) 3σ 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 3σ [1]0.990.701.020.68
Maximum DC (peak) 3σ 1.26 1.10 1.30 1.12