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CV0-003 · Question #355

An administrator is provisioning a new VM that will host tape backup software. The VM will need to communicate with a tape library that is connected to the host via multimode fiber. Which of the…

The correct answer is A. vNIC. A VM running tape backup software communicates with the tape library via network protocols, requiring a vNIC - not a direct Fibre Channel interface - as the VM-level provisioned interface.

Cloud Architecture and Design

Question

An administrator is provisioning a new VM that will host tape backup software. The VM will need to communicate with a tape library that is connected to the host via multimode fiber. Which of the following interfaces will need to be provisioned on the VM in order to communicate with the tape library?

Options

  • AvNIC
  • BvSwitch
  • CvHBA
  • DFCoE

How the community answered

(21 responses)
  • A
    95% (20)
  • C
    5% (1)

Why each option

A VM running tape backup software communicates with the tape library via network protocols, requiring a vNIC - not a direct Fibre Channel interface - as the VM-level provisioned interface.

AvNICCorrect

Tape backup software in a VM typically communicates with tape libraries using network-based protocols such as NDMP (Network Data Management Protocol) over TCP/IP, which requires a vNIC provisioned on the VM. The physical Fibre Channel connection to the tape library is managed at the host level by the host's HBA, while the backup application accesses the library through the network layer via the vNIC.

BvSwitch

A vSwitch is a virtual network switch that provides connectivity between VMs and physical networks at the host infrastructure level; it is not an interface that is provisioned inside a VM.

CvHBA

A vHBA is used when a VM requires direct Fibre Channel pass-through access to a storage device via RDM, which is not the typical deployment model for tape backup software that communicates using network-based protocols.

DFCoE

FCoE (Fibre Channel over Ethernet) describes a converged transport protocol for carrying FC traffic over Ethernet infrastructure; it identifies the physical connectivity type, not a virtual interface type provisioned within a VM.

Concept tested: Virtual NIC provisioning for VM tape backup network communication

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/

Topics

#virtual NIC#fiber channel#tape library#storage interfaces

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