Q27 — AWS SAA-C03 Ch.13

Question 27 of 100 | ← Chapter 13

Q927. A company is using AWS DataSync to migrate millions of files from an on-premises system to AWS. The files are 10 KB in size on average.The company wants to use Amazon S3 for file storage.For the first year after the migration,the files will be accessed once or twice and must be immediately available.After 1 year, the files must be archived for at least 7 years.Which solution will meet these requirements MOST cost-effectively?

Correct Answer: D. Configure a DataSync task to transfer the files to S3 Standard-lnfrequent Access (S3 Standard-lA). Use a lifecycle configuration to transition the files to S3 Deep Archive after 1 year with a retention period of 7 years.

Explanation

The most cost-effective solution to meet the company's requirements is:D. Configure a DataSync task to transfer the files to S3 Standard-Infrequent Access (S3 Standard-IA). Use a lifecycle configuration to transition the files to S3 Glacier Deep Archive after 1 year with a retention period of 7 years.Here's why:Cost-Effective Storage: S3 Standard-IA is designed for infrequently accessed data and offers significant cost savings compared to S3 Standard.Immediate Availability: S3 Standard-IA provides immediate access to the files, meeting the requirement for the first year.Archiving to Glacier Deep Archive: After one year, the lifecycle configuration automatically transitions the files to S3 Glacier Deep Archive, the most cost-effective storage class for long-term archival.Retention Period: The lifecycle configuration ensures the files are retained in Glacier Deep Archive for at least 7 years, meeting the company's requirement.Why other options are less cost-effective:A. Use an archive tool to group the files into large objects. Use DataSync to migrate the objects. Store the objects in S3 Glacier Instant Retrieval for the first year. Use a lifecycle configuration to transition the files to S3 Glacier Deep Archive after 1 year with a retention period of 7 years. Glacier Instant Retrieval is more expensive than S3 Standard-IA for the first year.B. Use an archive tool to group the files into large objects. Use DataSync to copy the objects to S3 Standard-Infrequent Access(S3 Standard-lA). Use a lifecycle configuration to transition the files to S3 Glacier Instant Retrieval after 1 year with a retention period of 7 years. Glacier Instant Retrieval is more expensive than Glacier Deep Archive for long-term storage.C. Configure the destination storage class for the files as S3 Glacier Instant Retrieval. Use a lifecycle policy to transition the files to S3 Glacier Flexible Retrieval after 1 year with a retention period of 7 years. Glacier Instant Retrieval is more expensive than S3 Standard-IA for the first year, and Glacier Flexible Retrieval is more expensive than Glacier Deep Archive for long-term storage.In summary:Option D provides the most cost-effective solution by leveraging the appropriate storage classes for the data's access patterns and retention requirements. It minimizes storage costs while ensuring the files are readily accessible for the first year and securely archived for the long term.