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SG0-001 · Question #571

An administrator wants to achieve MAXIMUM component redundancy in a server running single quad-headed HBA. Which of the following will satisfy this goal?

The correct answer is D. Replace quad-headed HBA with 4 single-headed HBAs.. To achieve maximum component redundancy for a server's storage connectivity, a single quad-headed HBA should be replaced with four individual single-headed HBAs.

Storage Connectivity

Question

An administrator wants to achieve MAXIMUM component redundancy in a server running single quad-headed HBA. Which of the following will satisfy this goal?

Options

  • AReplace quad-headed HBA with 2 dual-headed FCoE adapters.
  • BReplace quad-headed HBA with 2 dual-headed HBAs.
  • CReplace quad-headed HBA with 2 single-headed HBAs and 1 dual-headed.
  • DReplace quad-headed HBA with 4 single-headed HBAs.

How the community answered

(43 responses)
  • A
    14% (6)
  • B
    5% (2)
  • C
    7% (3)
  • D
    74% (32)

Why each option

To achieve maximum component redundancy for a server's storage connectivity, a single quad-headed HBA should be replaced with four individual single-headed HBAs.

AReplace quad-headed HBA with 2 dual-headed FCoE adapters.

Replacing with 2 dual-headed FCoE adapters means each adapter is still a single point of failure for two paths, which is less redundant than having four separate cards.

BReplace quad-headed HBA with 2 dual-headed HBAs.

Replacing with 2 dual-headed HBAs means if one HBA fails, two paths are lost, which is not maximum component redundancy.

CReplace quad-headed HBA with 2 single-headed HBAs and 1 dual-headed.

This configuration still includes a dual-headed HBA, creating a single point of failure for two paths, and does not achieve maximum redundancy compared to four single-headed cards.

DReplace quad-headed HBA with 4 single-headed HBAs.Correct

Replacing a single quad-headed HBA with four individual single-headed HBAs provides maximum component redundancy because each HBA operates independently on a separate physical card. This means that if any single HBA card fails, only one of the four paths to storage is affected, leaving the other three fully functional.

Concept tested: Server hardware component redundancy (HBAs)

Topics

#HBA redundancy#High availability#Single point of failure#Storage connectivity

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