nerdexam
Broadcom-VMware

1V0-21.20 · Question #112

How does Storage I/O Control protect the service level of critical virtual machines?

The correct answer is A. Gives preferential I/O resource allocation to critical virtual machines. This question asks how Storage I/O Control (SIOC) protects the service level of critical virtual machines.

Explain Storage Concepts in vSphere

Question

How does Storage I/O Control protect the service level of critical virtual machines?

Options

  • AGives preferential I/O resource allocation to critical virtual machines
  • BAllocates I/O resources equally among all virtual machines
  • CMonitors the storage habits of the virtual machines
  • Dtakes a count of virtual machines on the storage device

How the community answered

(30 responses)
  • A
    90% (27)
  • B
    3% (1)
  • C
    7% (2)

Why each option

This question asks how Storage I/O Control (SIOC) protects the service level of critical virtual machines.

AGives preferential I/O resource allocation to critical virtual machinesCorrect

Storage I/O Control (SIOC) monitors datastore I/O latency and, when contention is detected, it dynamically reallocates available I/O bandwidth based on configured shares. This ensures that critical virtual machines, assigned higher I/O shares, receive preferential access to storage resources during periods of congestion, thereby protecting their performance service levels.

BAllocates I/O resources equally among all virtual machines

Storage I/O Control's purpose is to differentiate I/O resource allocation based on shares, not to allocate resources equally among all virtual machines.

CMonitors the storage habits of the virtual machines

While Storage I/O Control monitors I/O latency to detect congestion, its primary function is to enforce I/O resource allocation, not merely to monitor 'storage habits'.

Dtakes a count of virtual machines on the storage device

Counting virtual machines on a storage device is a basic inventory task and does not explain how Storage I/O Control protects service levels through resource management.

Concept tested: VMware Storage I/O Control (SIOC)

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-1560CC6F-4235-460D-9549-F2E51368903B.html

Topics

#Storage I/O Control#I/O resource allocation#VM storage performance

Community Discussion

No community discussion yet for this question.

Full 1V0-21.20 Practice