Is it possible to encrypt an existing unencrypted EBS volume while it is attached to a running EC2 instance?

Direct Answer (Verified)Reviewed by Sunny (Senior Cloud Engineer)

Correct Answer: No, you must take a snapshot, copy the snapshot with encryption enabled, and then create a new volume from that snapshot

Encryption cannot be changed on a live volume. The snapshot-copy-restore path is the only way....

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Real Exam ScenarioAmazon EBS

Is it possible to encrypt an existing unencrypted EBS volume while it is attached to a running EC2 instance?

✓ Correct Answer & ExplanationAmazon EBS

Correct Answer

No, you must take a snapshot, copy the snapshot with encryption enabled, and then create a new volume from that snapshot

Why This Answer Is Correct

Encryption cannot be changed on a live volume. The snapshot-copy-restore path is the only way.

📚 What This Question Tests

This question evaluates your knowledge of Amazon EBS — a core concept tested in AWS Certified Solutions Architect – Associate (SAA-C03). Understanding Amazon EBS is essential for designing scalable, secure, and cost-effective cloud architectures. Mastery of this topic will help you answer scenario-based questions confidently on exam day.