AWS Certified SysOps Administrator – Associate — Question 48

A company is running an application on premises and wants to use AWS for data backup. All of the data must be available locally. The backup application can write only to block-based storage that is compatible with the Portable Operating System Interface (POSIX).

Which backup solution will meet these requirements?

Answer options

• A. Configure the backup software to use Amazon S3 as the target for the data backups.
• B. Configure the backup software to use Amazon S3 Glacier as the target for the data backups.
• C. Use AWS Storage Gateway, and configure it to use gateway-cached volumes.
• D. Use AWS Storage Gateway, and configure it to use gateway-stored volumes.

Correct answer: D

Explanation

The correct answer is D because gateway-stored volumes provide local access to data while storing backups in AWS, fulfilling the requirement for local availability. Option A and B do not meet the local access requirement, as S3 and S3 Glacier are object storage solutions, not block storage. Option C, while using AWS Storage Gateway, does not provide local storage for all data since it relies on cached volumes which may not retain all data locally.