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CV0-002 · Question #278

A VM was deleted by mistake today at 11:05 a.m. Below are the backups currently available for the VM: Crash-consistent restore is acceptable. Which of the following backups should be chosen?

The correct answer is A. Snapshot from today at 11:00. To recover a VM deleted at 11:05 a.m. today with minimal data loss and crash-consistency acceptable, the snapshot taken today at 11:00 is the optimal choice.

Operations

Question

A VM was deleted by mistake today at 11:05 a.m. Below are the backups currently available for the VM:

Crash-consistent restore is acceptable. Which of the following backups should be chosen?

Exhibit

CV0-002 question #278 exhibit

Options

  • ASnapshot from today at 11:00
  • BFull from three days ago at 00:00
  • CIncremental from today at 00:00
  • DSynthetic-full from yesterday at 12:00

How the community answered

(36 responses)
  • A
    81% (29)
  • B
    11% (4)
  • C
    3% (1)
  • D
    6% (2)

Why each option

To recover a VM deleted at 11:05 a.m. today with minimal data loss and crash-consistency acceptable, the snapshot taken today at 11:00 is the optimal choice.

ASnapshot from today at 11:00Correct

The snapshot taken today at 11:00 provides the most recent state of the VM just 5 minutes before its accidental deletion, minimizing data loss and meeting the crash-consistent restore requirement.

BFull from three days ago at 00:00

A full backup from three days ago is significantly older and would lead to a substantial loss of data and configuration changes made since that time.

CIncremental from today at 00:00

An incremental backup alone cannot be restored; it requires a preceding full backup. Even if combined, it would only restore the VM to the state at 00:00 today, which is older than the 11:00 snapshot.

DSynthetic-full from yesterday at 12:00

A synthetic-full from yesterday at 12:00 is too old, as it would cause data loss from yesterday afternoon and all of today up until 11:00.

Concept tested: Backup and recovery - point-in-time restore

Source: https://learn.microsoft.com/en-us/azure/backup/backup-architecture

Topics

#VM backup#snapshots#disaster recovery#data recovery

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