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.
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
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)- A81% (29)
- B11% (4)
- C3% (1)
- D6% (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.
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.
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.
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.
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
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