AWS Certified Solutions Architect – Professional (SAP-C02) — Question 484

A global ecommerce company has many data centers around the world. With the growth of its stored data, the company needs to set up a solution to provide scalable storage for legacy on-premises file applications. The company must be able to take point-in-time copies of volumes by using AWS Backup and must retain low-latency access to frequently accessed data. The company also needs to have storage volumes that can be mounted as Internet Small Computer System Interface (iSCSI) devices from the company’s on-premises application servers.

Which solution will meet these requirements?

Answer options

• A. Provision an AWS Storage Gateway tape gateway. Configure the tape gateway to store data in an Amazon S3 bucket. Deploy AWS Backup to take point-in-time copies of the volumes.
• B. Provision an Amazon FSx File Gateway and an Amazon S3 File Gateway. Deploy AWS Backup to take point-in-time copies of the data.
• C. Provision an AWS Storage Gateway volume gateway in cache mode. Back up the on-premises Storage Gateway volumes with AWS Backup.
• D. Provision an AWS Storage Gateway file gateway in cache mode. Deploy AWS Backup to take point-in-time copies of the volumes.

Correct answer: C

Explanation

AWS Storage Gateway volume gateway in cached mode allows on-premises applications to mount block storage volumes as iSCSI devices while keeping frequently accessed data locally for low-latency performance. It integrates natively with AWS Backup to perform point-in-time snapshots of these volumes. File gateways (S3 or FSx) do not support iSCSI because they use file protocols like NFS or SMB, and tape gateways are designed for virtual tape backups rather than active block storage volumes.