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SK0-004 · Question #684

A blade server consumes 2000W at full power in a chassis that holds four power supplies. Which of the following is the MINIMUM amount of 900W power supplies needed to power the blade chassis?

The correct answer is C. Three. With a 2000W load and 900W power supplies, at least three supplies totaling 2700W are required to exceed the chassis power draw.

Server hardware installation and management

Question

A blade server consumes 2000W at full power in a chassis that holds four power supplies. Which of the following is the MINIMUM amount of 900W power supplies needed to power the blade chassis?

Options

  • AOne
  • BTwo
  • CThree
  • DFour

How the community answered

(38 responses)
  • A
    8% (3)
  • B
    5% (2)
  • C
    84% (32)
  • D
    3% (1)

Why each option

With a 2000W load and 900W power supplies, at least three supplies totaling 2700W are required to exceed the chassis power draw.

AOne

One 900W supply provides only 900W, which is less than half the 2000W required by the chassis.

BTwo

Two 900W supplies provide 1800W total, still 200W below the 2000W chassis power requirement.

CThreeCorrect

Two 900W power supplies deliver only 1800W, which falls 200W short of the 2000W requirement. Three 900W supplies provide 2700W total, which meets and exceeds the 2000W load, making three the minimum number needed to power the chassis without being undersized.

DFour

Four supplies would function but exceed the minimum needed; three is sufficient to cover the 2000W load.

Concept tested: Power supply capacity calculation for server chassis

Topics

#power supply sizing#blade server#power redundancy#datacenter power

Community Discussion

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