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2V0-620 · Question #102

Refer to the Exhibit. A storage administrator has reported that full utilization of all bandwidth from an ESXi 6.x host is not being seen. In troubleshooting the issue, the Adapter details are shown…

The correct answer is C. Not all links are used because a path is disabled. A disabled storage path prevents the ESXi host from distributing I/O across all available links, resulting in less than full bandwidth utilization.

Section 2 – Administer vSphere Resources

Question

Refer to the Exhibit. A storage administrator has reported that full utilization of all bandwidth from an ESXi 6.x host is not being seen. In troubleshooting the issue, the Adapter details are shown in the Exhibit. Based on the exhibit, what is cause of the issue?

Exhibit

2V0-620 question #102 exhibit

Options

  • AThe array is not setup to use the correct multipathing policy.
  • BThere are no virtual machines on the ESXi host.
  • CNot all links are used because a path is disabled.
  • DAnother path needs to be configured.

How the community answered

(29 responses)
  • A
    7% (2)
  • B
    24% (7)
  • C
    55% (16)
  • D
    14% (4)

Why each option

A disabled storage path prevents the ESXi host from distributing I/O across all available links, resulting in less than full bandwidth utilization.

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

The multipathing policy controls how I/O is distributed across active paths, but it does not disable paths; a policy misconfiguration would not show a path as disabled in the adapter details.

BThere are no virtual machines on the ESXi host.

The presence or absence of virtual machines does not affect whether storage paths are active or disabled at the host adapter level.

CNot all links are used because a path is disabled.Correct

The adapter details exhibit shows one or more paths in a disabled state. When a path is disabled, the host cannot send I/O over it, so the total throughput is limited to only the active paths rather than the full combined bandwidth of all links.

DAnother path needs to be configured.

The exhibit shows existing paths are present but one is disabled, not that the path count is insufficient; adding another path would not re-enable the already-configured disabled path.

Concept tested: ESXi storage multipathing path status and bandwidth utilization

Source: https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.storage.doc/GUID-DB5BC795-0CD5-4673-8CB1-5F24CEBBCC58.html

Topics

#multipathing#storage adapter#path management#bandwidth utilization

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