Which statement best describes the difference between VM snapshots and VM backups?

Which statement best describes the difference between VM snapshots and VM backups?

• A. Snapshots provide rapid, short-term rollback but are not suitable for long-term backups; backups provide application-consistent restores
• B. Snapshots are always superior to backups
• C. Backups do not capture VM state
• D. Snapshots and backups are interchangeable for disaster recovery

Answer: (A)

Snapshots capture the VM’s state at a moment in time, so they’re ideal for quick, short-term rollback if you want to undo recent changes or recover from a transient issue. But they aren’t built for long-term protection: they depend on the current storage state, can create long chains, and may not provide durable, tested restores over weeks or months. Backups are designed for durable protection and retention. They copy data to a separate location and, when integrated with the guest OS or application quiescing, can produce application-consistent restores. This means the data is in a recoverable, coherent state for the running applications, which is essential for reliable disaster recovery. So the best description is that snapshots offer rapid, short-term rollback, while backups provide long-term protection with the possibility of application-consistent restores.

Snapshots capture the VM’s state at a moment in time, so they’re ideal for quick, short-term rollback if you want to undo recent changes or recover from a transient issue. But they aren’t built for long-term protection: they depend on the current storage state, can create long chains, and may not provide durable, tested restores over weeks or months.

Backups are designed for durable protection and retention. They copy data to a separate location and, when integrated with the guest OS or application quiescing, can produce application-consistent restores. This means the data is in a recoverable, coherent state for the running applications, which is essential for reliable disaster recovery.

So the best description is that snapshots offer rapid, short-term rollback, while backups provide long-term protection with the possibility of application-consistent restores.