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2V0-621 · Question #73

Refer to the Exhibit. An administrator wishes to provide Load Balanced I/O for the device shown in the Exhibit. To meet this requirement, which setting should be changed?

The correct answer is B. Path Selection Policy = Round Robin (VMware). To achieve load-balanced I/O across multiple storage paths in VMware, the Path Selection Policy must be set to Round Robin, which distributes I/O requests evenly across all active paths.

Section 3 – Configure and Administer vSphere 6.x Storage

Question

Refer to the Exhibit. An administrator wishes to provide Load Balanced I/O for the device shown in the Exhibit. To meet this requirement, which setting should be changed?

Exhibit

2V0-621 question #73 exhibit

Options

  • AStorage Array Type Policy = VMW_NMP_RR
  • BPath Selection Policy = Round Robin (VMware)
  • CStorage Array Type Policy = VMW_SATP_RR
  • DPath Selection Policy = MRU (VMware)

How the community answered

(56 responses)
  • A
    2% (1)
  • B
    89% (50)
  • C
    5% (3)
  • D
    4% (2)

Why each option

To achieve load-balanced I/O across multiple storage paths in VMware, the Path Selection Policy must be set to Round Robin, which distributes I/O requests evenly across all active paths.

AStorage Array Type Policy = VMW_NMP_RR

VMW_NMP_RR is not a valid SATP value; it conflates NMP (Native Multipathing Plugin) and RR (Round Robin) naming conventions from different layers of the storage stack.

BPath Selection Policy = Round Robin (VMware)Correct

The Path Selection Policy (PSP) controls how I/O is distributed across available paths to a device. Setting it to Round Robin causes the VMware NMP to cycle I/O requests across all active paths in turn, achieving load balancing. The SATP is a separate component responsible for path discovery and health monitoring, not I/O distribution.

CStorage Array Type Policy = VMW_SATP_RR

VMW_SATP_RR is not a valid SATP identifier; SATPs (Storage Array Type Plugins) classify and manage path health for specific array types, they do not control how I/O is distributed across paths.

DPath Selection Policy = MRU (VMware)

MRU (Most Recently Used) PSP sends all I/O through a single path - the most recently active one - and only fails over to another path if that path fails, providing no load balancing.

Concept tested: VMware NMP Path Selection Policy for load balancing

Source: https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.storage.doc/GUID-DB5BC795-759A-40E0-B75E-69BAF6DEFADC.html

Topics

#path selection policy#Round Robin#load balancing#multipathing

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