Seagate BARRACUDA 4LP ST32171N/W/WC/WD/DC Installation Manual page 16

14
[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)
Voltage
Regulation [5]
Max. operating current
DC3 [1]
Avg. idle current DCX [1]
Max. starting current
(peak DC) DC3 [3]
(peak AC) AC3 [3]
Delayed motor start (max)
DC3 [1][4]
Peak operating current
Typical DCX [1] [6]
Maximum DC3 [1]
Maximum (peak) 3
Notes for this table follows Table 2b.
Barracuda 4LP Installation Guide, Rev. B
ST34371/ST34571
N/W/WC
Single-ended
+5V
±5%
0.81
0.46
0.78
0.48
0.75
0.81
1.5
WD/DC
Differential
+12V +5V
±5% [2] ±5%
0.95 1.21
0.54 0.70
2.44 1.1
3.1
0.20 0.90
0.76 1.05
0.95 1.21
2.5 2.0
+12V
±5%[2]
0.95
0.54
2.44
3.1
0.20
0.76
0.95
2.5