Q24 — AWS SAA-C03 Ch.17

Question 24 of 89 | ← Chapter 17

Q1324. A company wants to migrate 70 TB of data from its on-premises data center to AWS. The data is a mix of structured and unstructured data. The company wants to use a one-time migration strategy that is secure and cost-effective.Which AWS service will meet these requirements?

Correct Answer: C. AWS Snowball Edge

Explanation

To migrate 70 TB of mixed structured and unstructured data from an on-premises data center to AWS in a secure, cost-effective, one-time migration, the best AWS service is:Correct Answer:C. AWS Snowball EdgeWhy AWS Snowball Edge is the Best Choice?\1. Handles Large-Scale Data Transfers (70 TB)AWS Snowball Edge is a physical data transfer device designed for petabyte-scale migrations when network transfers are too slow or expensive.Key features:High capacity: Each Snowball Edge device can store up to 100 TB (or 80 TB usable space). Secure: Uses AWS KMS encryption and tamper-resistant hardware for data protection. Cost-effective: Avoids high network bandwidth costs for large transfers. Fast: Physical shipping is often quicker than uploading 70 TB over the internet.\2. Supports Both Structured and Unstructured DataSnowball Edge can transfer:Unstructured data (e.g., logs, backups, media files) to Amazon S3. Structured data (e.g., databases, CSV/JSON files) to Amazon RDS, Amazon DynamoDB, or S3. Optional compute capabilities: Some Snowball Edge models include compute instances for local data processing before transfer.\3. One-Time Migration StrategyUnlike AWS Storage Gateway (B) or AWS DMS (D), Snowball Edge is designed for large, one-time transfers rather than ongoing synchronization.After transfer, data can be imported into S3, EBS, EFS, or databases as needed.Why Other Options Are Less Suitable?A. Amazon Elastic File System (Amazon EFS)EFS is a managed NFS file system for ongoing storage in AWS, not a migration tool. Use case: Shared file storage for EC2 instances, not for transferring 70 TB from on-premises.B. AWS Storage GatewayPartially correct, but not optimal:Storage Gateway is used for ongoing hybrid cloud storage (e.g., caching frequently accessed data in AWS while keeping some on-premises).Not ideal for a one-time 70 TB migration (slower and more expensive than Snowball Edge for large transfers).D. AWS Database Migration Service (AWS DMS)DMS is for database migrations (e.g., Oracle to Aurora, MySQL to DynamoDB).Does not handle unstructured data (e.g., logs, backups).Not cost-effective for 70 TB of mixed data (better suited for smaller, structured migrations).Best Migration Approach with Snowball EdgeRequest Snowball Edge devices from AWS (based on data size). Copy data to the device using AWS tools (e.g., aws snowball CLI or AWS Transfer Family). Ship the device back to AWS for secure import into S3, EBS, or databases. Verify data integrity before decommissioning on-premises storage.ConclusionFor a secure, cost-effective, one-time migration of 70 TB of mixed data, the best choice is:C. AWS Snowball EdgeOther options are either not designed for large transfers (A, D) or better suited for ongoing hybrid storage (B).