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CV0-003 · Question #53

Which of the following backup methods is MOST used by VM users?

The correct answer is D. Snapshots. Snapshots are the dominant backup method in virtualized environments because they capture the entire VM state instantly without downtime. Most hypervisors have snapshot capability built in, making them the default choice for VM administrators.

Operations and Support

Question

Which of the following backup methods is MOST used by VM users?

Options

  • ATape backups
  • BCloning
  • CImage backups
  • DSnapshots

How the community answered

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

Why each option

Snapshots are the dominant backup method in virtualized environments because they capture the entire VM state instantly without downtime. Most hypervisors have snapshot capability built in, making them the default choice for VM administrators.

ATape backups

Tape backups are a traditional physical backup medium that requires additional hardware and manual handling, making them impractical and rarely preferred in modern virtualized environments.

BCloning

Cloning creates a full duplicate of a VM rather than a point-in-time checkpoint, consuming significantly more storage and time, making it less practical for routine backup use.

CImage backups

Image backups capture a full copy of a disk or system and are more commonly associated with physical machine backups; while usable for VMs, they are slower and more resource-intensive than snapshots.

DSnapshotsCorrect

A snapshot captures the exact state of a virtual machine's disk, memory, and configuration at a specific point in time using the hypervisor's built-in functionality. This makes them extremely fast to create and restore, requires no separate backup software or tape infrastructure, and allows VM users to roll back to a known-good state within seconds, which is why they are the most widely used backup method in VM environments.

Concept tested: VM snapshot backup methods in virtualized environments

Source: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-vm-administration/GUID-CA948C69-7F58-4519-AEB1-739545EA94E5.html

Topics

#VM snapshots#backup methods#data protection#virtualization backup

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