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352-001 · Question #73

You are the SAN designer for the ABC Company. Due to budget constraints, there is increased pressure by management to further optimize server utilization by implementing virtualization technologies…

The correct answer is A. NPIV is used to assign multiple FCIDs to a single N Port. D. NPIV can be used to allow multiple applications on the same port to use different IDs in the same. NPIV (N_Port ID Virtualization) allows a single physical Fibre Channel HBA to present multiple virtual port identities to the fabric, enabling per-VM SAN isolation in virtualized environments.

Network Virtualization

Question

You are the SAN designer for the ABC Company. Due to budget constraints, there is increased pressure by management to further optimize server utilization by implementing virtualization technologies on all servers and increase virtual machines density. Faced with some SAN challenges, the server team requests your help in the design and implementation of the SAN in the new virtualized environment. In which two ways can NPIV be used in your proposed design? (Choose two.)

Options

  • ANPIV is used to assign multiple FCIDs to a single N Port.
  • BNPIV is used to define and bind multiple virtual WWNs (VIs) to a single physical pWWN.
  • CYou recommend NPIV so that hosts can be members of different zones.
  • DNPIV can be used to allow multiple applications on the same port to use different IDs in the same

How the community answered

(38 responses)
  • A
    58% (22)
  • B
    29% (11)
  • C
    13% (5)

Why each option

NPIV (N_Port ID Virtualization) allows a single physical Fibre Channel HBA to present multiple virtual port identities to the fabric, enabling per-VM SAN isolation in virtualized environments.

ANPIV is used to assign multiple FCIDs to a single N Port.Correct

NPIV's core function is to register multiple N_Port IDs (FCIDs) with the fabric from a single physical N_Port, so the fabric treats each virtual port as a distinct addressable entity.

BNPIV is used to define and bind multiple virtual WWNs (VIs) to a single physical pWWN.

While NPIV does create vWWNs under a single pWWN, the term 'VIs' is non-standard NPIV terminology, and this choice mischaracterizes the mechanism as a simple WWN-binding operation rather than the creation of full virtual N_Ports with both vWWN and vFCID.

CYou recommend NPIV so that hosts can be members of different zones.

Zone membership is controlled by the SAN fabric's zoning configuration, not by NPIV - NPIV creates virtual identities that can then be referenced in zone definitions, but NPIV itself has no role in assigning hosts to zones.

DNPIV can be used to allow multiple applications on the same port to use different IDs in the sameCorrect

NPIV enables multiple VMs or applications sharing one physical HBA port to each operate with their own unique FCID, allowing independent fabric access and SAN policy enforcement per application on the same physical port.

Concept tested: NPIV virtual N_Port ID assignment in virtualized SAN

Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_x/config/san_features/cisco_mds9000_san_features_config_guide_8x/configuring_npiv.html

Topics

#NPIV#SAN#virtualization#FCID

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