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AWS Certified Solutions Architect study material · question 303 of 500

What does an EBS snapshot store after the first one is taken?

  1. The volume's metadata but not its data
  2. Only the blocks that changed since the previous snapshot
  3. A full copy of the volume each time
  4. A compressed image of the file system
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Answer: B. Only the blocks that changed since the previous snapshot

Snapshots are incremental, which keeps both the time to create them and the storage cost down.

Source: Amazon EBS snapshots (Amazon Web Services) — Amazon EBS snapshots

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