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2V0-620 · Question #141

Refer to the Exhibit. A storage administrator is not seeing full utilization of all bandwidth from an ESXi host. The vSphere administrator observes the adapter details, as shown in the Exhibit. What…

The correct answer is D. No traffic is being sent across it because a path failed. When a path in a multipath configuration fails, it stops carrying traffic entirely, causing apparent underutilization of available bandwidth from the ESXi host.

Section 5 – Administer and Maintain vSphere

Question

Refer to the Exhibit. A storage administrator is not seeing full utilization of all bandwidth from an ESXi host. The vSphere administrator observes the adapter details, as shown in the Exhibit. What is the probable cause of this issue?

Exhibit

2V0-620 question #141 exhibit

Options

  • AAnother path needs to be used to allow full utilization of the bandwidth.
  • BThe array is not setup to use the correct multipathing policy.
  • CThere are no virtual machines on the host.
  • DNo traffic is being sent across it because a path failed.

How the community answered

(29 responses)
  • A
    3% (1)
  • B
    17% (5)
  • C
    7% (2)
  • D
    72% (21)

Why each option

When a path in a multipath configuration fails, it stops carrying traffic entirely, causing apparent underutilization of available bandwidth from the ESXi host.

AAnother path needs to be used to allow full utilization of the bandwidth.

Adding another path would expand total available bandwidth but does not address the root cause of a failed path carrying zero traffic as shown in the exhibit.

BThe array is not setup to use the correct multipathing policy.

A misconfigured multipathing policy on the array could affect load distribution across paths but would not cause a path to show zero traffic in the adapter details view.

CThere are no virtual machines on the host.

No virtual machines on the host would result in no storage I/O at all, but the scenario implies some utilization exists and the issue is that not all bandwidth is being used.

DNo traffic is being sent across it because a path failed.Correct

In a VMware multipath environment, if a path fails and goes into a Dead or inactive state, no I/O is routed over that path even though the adapter remains visible in the vSphere UI. The exhibit likely shows a path in a non-active state, meaning it is forwarding zero traffic, which directly explains why the storage administrator does not observe full bandwidth utilization across all available paths.

Concept tested: VMware multipathing path failure and I/O routing

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-DB5BC795-E4B7-4EA2-8804-40E8DA4FA845.html

Topics

#multipathing#storage adapter#path failure#bandwidth utilization

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