SY0-501 · Question #566
SY0-501 Question #566: Real Exam Question with Answer & Explanation
The correct answer is C: Differential backup. When restoring to a warm recovery site without mirroring, differential backups offer the fastest restoration by requiring only two restore operations: the last full backup plus the single latest differential backup.
Question
Which of the following would allow for the QUICKEST restoration of a server into a warm recovery site in a case in which server data mirroring is not enabled?
Options
- AFull backup
- BIncremental backup
- CDifferential backup
- DSnapshot
Explanation
When restoring to a warm recovery site without mirroring, differential backups offer the fastest restoration by requiring only two restore operations: the last full backup plus the single latest differential backup.
Common mistakes.
- A. A full backup alone does not capture changes made after the last full backup was taken, meaning data loss would be greater and it would not reflect the most recent state of the server.
- B. Incremental backups require restoring the last full backup plus every incremental backup taken since then in sequence, making the restoration process the most time-consuming of the backup strategies listed.
- D. While snapshots can enable rapid recovery, they are typically point-in-time copies stored on the same or attached storage system and are not traditionally used for warm site disaster recovery scenarios where the primary infrastructure is unavailable.
Concept tested. Backup types and recovery time optimization strategies
Reference. https://learn.microsoft.com/en-us/azure/backup/backup-architecture
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