SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating its on-premises data warehouse to Amazon Redshift. The data warehouse is currently running on a single large server with 10 TB of data. The company wants to minimize downtime and ensure data consistency. Which AWS service should the architect use to perform the migration?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Database Migration Service (AWS DMS)
AWS Database Migration Service (DMS) can migrate data from on-premises databases to Amazon Redshift with minimal downtime. AWS Snowball is for offline transfer and would cause more downtime. AWS Glue is for ETL, not direct migration. S3 Transfer Acceleration is for S3 uploads.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS Database Migration Service (AWS DMS)
Why this is correct
AWS DMS supports continuous replication from on-premises sources to Redshift, minimizing downtime.
- ✗
Amazon S3 Transfer Acceleration
Why it's wrong here
This is for fast S3 uploads, not database migration.
- ✗
AWS Glue
Why it's wrong here
Glue is an ETL service, not designed for ongoing replication.
- ✗
AWS Snowball Edge
Why it's wrong here
Snowball is offline and would cause downtime during shipping.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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