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14 Barracuda 4LP Installation Guide, Rev. B
[2] Standard factory units are formatted 512 data bytes per sector with
sparing equivalent to eighty spare sectors per eight cylinder region.
Spares are located at the end of each sparing region.
[3] Includes controller overhead.
Table 2a. DC power requirements (Amps)
Notes for this table follows Table 2b.
ST34371/ST34571
N/W/WC
Single-ended
WD/DC
Differential
Voltage +5V +12V +5V +12V
Regulation [5] ±5% ±5%[2] ±5% ±5%[2]
Max. operating current
DC3σ [1] 0.81 0.95 1.21 0.95
Avg. idle current DCX
[1] 0.46 0.54 0.70 0.54
Max. starting current
(peak DC) DC3σ [3]
(peak AC) AC3σ [3]
0.78 2.44
3.1
1.1 2.44
3.1
Delayed motor start (max)
DC3σ [1][4] 0.48 0.20 0.90 0.20
Peak operating current
Typical DCX
[1][6]
Maximum DC3σ [1]
Maximum (peak) 3σ
0.75
0.81
1.5
0.76
0.95
2.5
1.05
1.21
2.0
0.76
0.95
2.5