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)

 

 

 

 

 

ST34371/ST34571

 

 

 

 

 

 

N/W/WC

WD/DC

 

 

 

 

 

 

Single-ended

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

 

 

 

 

[1]

0.46

0.54

0.70

0.54

Avg. idle current DCX

Max. starting current

 

 

 

 

(peak DC) DC3σ [3]

0.78

2.44

1.1

2.44

(peak AC) AC3σ [3]

 

3.1

 

3.1

Delayed motor start (max)

 

 

 

 

DC3σ [1][4]

0.48

0.20

0.90

0.20

Peak operating current

 

 

 

 

 

 

[1][6]

0.75

0.76

1.05

0.76

Typical DCX

Maximum DC3σ [1]

0.81

0.95

1.21

0.95

Maximum (peak) 3σ

1.5

2.5

2.0

2.5

Notes for this table follows Table 2b.

Page 16
Image 16
Seagate ST32171N/W/WC/WD/DC, ST34571N/W/WC/WD/DC DC power requirements Amps ST34371/ST34571, Single-ended Differential