Q4 — AWS SAA-C03 Ch.6

Question 4 of 65 | ← Chapter 6

Q369. A company uses storage area network (SAN) storage to runs its application on premises. The company is building a disaster recovery(DR) plan. The company wants to keep the backup data in the AWS Cloud. In the event of a disaster, the company wants to use Amazon Elastic Block Store (Amazon EBS) to restore the data and the application in the AWS Cloud.Which solution will meet these requirements MOST cost_effectively'

• A. Take snapshots of the on-premises SAN storage. Copy the data to Amazon S3. During a disaster, create an EBS volume directly from the snapshot that is stored in Amazon S3
• B. Use EBS direct APIs to create incremental EBS snapshots from the on-premises SAN storage. Use the EBS snapshot to create EBS volumes during a disaster
• C. Create an asynchronous replication from the on-premises SAN storage to an EBS volume. During a disaster, create an Amazon EC2 instance. Attach the EBS volume to the instance
• D. Use AWS DataSync to periodically copy the data from the on-premises SAN storage to Amazon S3.During a disaster, create an Amazon EC2 instance. Attach a new EBS volume to the EC2 instance Copy the data directly from Amazon S3 to the EBS volume ✓

Correct Answer: D. Use AWS DataSync to periodically copy the data from the on-premises SAN storage to Amazon S3.During a disaster, create an Amazon EC2 instance. Attach a new EBS volume to the EC2 instance Copy the data directly from Amazon S3 to the EBS volume

Explanation

The most cost-effective solution that meets the requirements described would be option D: Use AWS DataSync to periodically copy the data from the on-premises SAN storage to Amazon S3. During a disaster, create an Amazon EC2 instance. Attach a new EBS volume to the EC2 instance and copy the data directly from Amazon S3 to the EBS volume.This solution leverages AWS DataSync, which is a cost-effective data transfer service designed for moving large amounts of data between on-premises storage and AWS services like Amazon S3. By periodically copying the data from the-premises SAN storage to Amazon S3 using DataSync, you can ensure that your backup data is stored in the AWS Cloud.During a disaster, you can create an Amazon EC2 instance and attach a new EBS volume to it. Then, you can use the data stored in Amazon S3 to restore the application and data by directly copying it from S3 to the EBS volume attached to the EC2 instance.This approach eliminates the need for taking snapshots or using EBS direct APIs, which can incur additional costs. It also provides flexibility terms of restoring the data and application in the event of a disaster.