CLF-C02 Question 32
Single answerAn organization is planning to migrate its 50 TB on-premises data warehouse to AWS. They require a secure and efficient way to transfer the data because it is too large for network transfer to be feasible. Which migration strategy would be the most appropriate in this scenario?
- A
Use AWS Snowball to physically transfer the data to AWS.
- B
Use AWS Database Migration Service (DMS) to replicate the database to AWS.
- C
Upload the data to Amazon S3 through the internet using a standard internet connection.
- D
Set up a Direct Connect connection to transfer the data directly to AWS.
Show answer and explanation
Correct answer: A
Explanation
For large-scale data migrations involving terabytes or petabytes, AWS Snowball is the most efficient and cost-effective option. It allows physical transfer of data using secure appliances, bypassing the need for internet or network transfer, which is impractical for such large datasets. Other options like DMS, internet upload, or Direct Connect do not address the specific needs of this scenario as effectively.
- A. Correct.
AWS Snowball is designed for securely transferring large amounts of data (terabytes or petabytes) to AWS when network transfer is impractical or would take too long. This makes it the most appropriate option for the given scenario.
- B. Incorrect.
AWS Database Migration Service (DMS) is primarily used for database replication and migration. However, it is not suitable for transferring large volumes of raw data like a 50 TB data warehouse that is not already configured as a database.
- C. Incorrect.
Uploading the data via a standard internet connection would be inefficient and time-consuming for a dataset as large as 50 TB, making it an unsuitable option.
- D. Incorrect.
AWS Direct Connect provides a dedicated network connection to AWS, which can be used for data transfer. However, setting up Direct Connect may take weeks or months and is not the most efficient or cost-effective strategy for a one-time large-scale migration.