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VCP550 · Question #33

What should an administrator do to configure multi-pathing using software iSCSI?

The correct answer is A. Bind the VMkernel ports to the software iSCSI initiator. Configuring iSCSI multi-pathing in VMware requires binding multiple VMkernel ports to the software iSCSI initiator so each path uses a dedicated network adapter.

Configure and Administer vSphere Storage

Question

What should an administrator do to configure multi-pathing using software iSCSI?

Options

  • ABind the VMkernel ports to the software iSCSI initiator
  • BConfigure Zoning between the hosts and SAN switches
  • CConfigure NIC teaming on the associated uplinks
  • DEnsure jumbo frames are enabled end-to-end

How the community answered

(34 responses)
  • A
    79% (27)
  • B
    6% (2)
  • C
    3% (1)
  • D
    12% (4)

Why each option

Configuring iSCSI multi-pathing in VMware requires binding multiple VMkernel ports to the software iSCSI initiator so each path uses a dedicated network adapter.

ABind the VMkernel ports to the software iSCSI initiatorCorrect

In VMware, software iSCSI multi-pathing is achieved by binding multiple VMkernel adapters to the iSCSI initiator, with each VMkernel port on a separate uplink. This creates distinct network paths to the storage target, enabling path failover and load balancing through VMware's NMP (Native Multi-Pathing) framework.

BConfigure Zoning between the hosts and SAN switches

Zoning is a Fibre Channel SAN concept used to control which HBAs can see which storage ports; it does not apply to iSCSI multi-pathing configuration.

CConfigure NIC teaming on the associated uplinks

NIC teaming bonds uplinks into a single logical link for redundancy and does not create separate iSCSI paths; port binding is the correct mechanism for iSCSI multi-pathing.

DEnsure jumbo frames are enabled end-to-end

Jumbo frames reduce CPU overhead and improve throughput by increasing MTU, but enabling them does not configure or enable multi-pathing.

Concept tested: Software iSCSI multi-pathing port binding configuration

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-E9D6AF75-B0B5-4F9E-8831-4D8CC00EC1F2.html

Topics

#software iSCSI#multi-pathing#VMkernel binding#iSCSI initiator

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