What is the difference between a backup and a snapshot?

Question

AHAMEDSATHICK MOHAMEDALI · Accepted Answer

These two terms often get mixed up, but they serve different purposes. Backup • Definition: A complete copy of data (files, databases, or entire systems) stored independently from the original source. • How it works: Typically saved in another location (local storage, external drives, or cloud backup service). • Use case: Long-term data protection, disaster recovery, compliance. Snapshot • Definition: A point-in-time copy of a storage volume or system state. • How it works: Instead of copying everything, snapshots are often incremental (only changes since the last snapshot are stored). • Use case: Short-term recovery, testing, versioning. Key Difference in One Line: • Backup = Independent full copy for long-term protection. • Snapshot = Lightweight, point-in-time state of a system/volume, often dependent on the original data.

What is the difference between a backup and a snapshot?

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