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CompTIA

CV0-002 · Question #147

Anne, a system administrator, has replaced an HBA in one of her servers; however, none of the FC logical drives are accessible. Which of the following is MOST likely to be the case?

The correct answer is A. The WWN of the new HBA is not defined in the FC switch.. When an HBA is replaced in a Fibre Channel (FC) environment, the new HBA will have a different World Wide Name (WWN), which must be explicitly configured in the FC switch zoning for storage access.

Troubleshooting

Question

Anne, a system administrator, has replaced an HBA in one of her servers; however, none of the FC logical drives are accessible. Which of the following is MOST likely to be the case?

Options

  • AThe WWN of the new HBA is not defined in the FC switch.
  • BThe MAC address of the new HBA is not defined in the FC switch.
  • CThe LUN mask of the new HBA is not defined in the FC switch.
  • DThe IP of the new HBA is not defined in the FC switch.

How the community answered

(24 responses)
  • A
    71% (17)
  • B
    8% (2)
  • C
    4% (1)
  • D
    17% (4)

Why each option

When an HBA is replaced in a Fibre Channel (FC) environment, the new HBA will have a different World Wide Name (WWN), which must be explicitly configured in the FC switch zoning for storage access.

AThe WWN of the new HBA is not defined in the FC switch.Correct

Fibre Channel networks use WWNs (World Wide Names) for unique identification of HBAs and storage ports, similar to MAC addresses in Ethernet. For a server to access FC logical drives, the WWN of its HBA must be configured within the FC switch's zoning policies, defining which HBAs can communicate with specific storage LUNs.

BThe MAC address of the new HBA is not defined in the FC switch.

MAC addresses are used in Ethernet networks, not Fibre Channel networks, and are irrelevant for FC switch configuration.

CThe LUN mask of the new HBA is not defined in the FC switch.

LUN masking is typically configured on the storage array, not directly on the FC switch, to restrict which storage initiators (HBAs) can see specific LUNs.

DThe IP of the new HBA is not defined in the FC switch.

Fibre Channel is a block-level storage protocol that operates independently of IP addresses, which are used for TCP/IP networks.

Concept tested: Fibre Channel HBA replacement and zoning

Source: https://www.ibm.com/docs/en/aix/7.2?topic=protocol-fibre-channel

Topics

#Fibre Channel SAN#HBA replacement#WWN zoning#storage troubleshooting

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