Table 4:

50GB DC power requirements

 

 

 

 

 

 

 

 

 

Parameter

 

 

 

 

 

 

50Gb (3.0GB)

 

Regulation

 

 

 

 

 

 

+/‐5%

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

 

 

 

 

 

 

+5 V

 

 

 

 

 

 

 

 

 

Current (A)

Power (W)

 

Average Idle Current

 

 

 

 

 

 

0.13

0.65

 

DCx

 

Standby

 

 

 

 

 

 

0.11

0.55

 

DCx

 

Average Sleep Current

DCx

 

0.09

0.45

 

Maximum Start Current:

 

 

 

 

 

 

 

 

 

DC (Peak DC)

0.83

 

 

AC (Peak AC)

1.59

 

 

Delayed Motor Start (DC max)

0.11

0.55

 

Peak Operating Current (random read):

 

 

 

Typical DC

DCx

 

 

0.16

0.80

 

Maximum DC

0.18

0.90

 

Maximum DC (peak)

0.67

 

 

Peak Operating Current (random write):

 

 

 

Typical DC

 

 

 

 

 

0.25

1.25

 

DCx

 

Maximum DC

0.28

1.40

 

Maximum DC (peak)

0.98

 

 

Peak operating current (sequential read):

 

 

 

Typical DC

 

 

 

0.23

1.15

 

DCx

 

Maximum DC

0.25

1.25

 

Maximum DC (peak)

0.74

 

 

Peak operating current (sequential write):

 

 

 

Typical DC

DCx

 

0.37

1.85

 

Maximum DC

0.40

2.00

 

Maximum DC (peak)

0.90

 

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase power to oper- ational levels.

Pulsar Product Manual, Rev. A

11

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Seagate ST9100011FS, ST950011FS, ST9200011FS manual 50GB DC power requirements