Question #995
A company needs to migrate 50 TB of data from an on-premises data center to AWS. The company has limited bandwidth and unreliable network connectivity, and they must preprocess the data locally before transferring it. Which AWS service best meets these requirements?
AWS Database Migration Service (AWS DMS)
AWS Data Sync
AWS Backup
AWS Snowball Edge
Explanation
The correct answer is D (AWS Snowball Edge). Here's why:
- AWS Snowball Edge: Designed for large-scale data transfers (like 50 TB) with limited bandwidth. It uses physical devices shipped to AWS, avoiding unreliable network issues. Snowball Edge also includes compute capabilities, enabling local data preprocessing before transfer.
- Why other options are incorrect:
- A (AWS DMS): Focuses on database migration over the network, unsuitable for unreliable connectivity and lacks preprocessing support.
- B (AWS Data Sync): Requires stable network connectivity to transfer data efficiently, which the company lacks.
- C (AWS Backup): Used for backing up AWS resources, not for migrating on-premises data.
Key Points: Snowball Edge is ideal for offline bulk data transfers with preprocessing needs. Always consider network limitations and data size when choosing migration services.
Answer
The correct answer is: D