SAA-C03 Question 404
Select 2A company is running a critical application on Amazon EC2 instances in a single Availability Zone. They want to implement a backup strategy to ensure that their application data is protected and recoverable in case of unexpected failures or disasters. Which of the following strategies will provide the most comprehensive and reliable backup solution?
- A
Create snapshots of the Amazon EBS volumes attached to the EC2 instances and store them in the same region.
- B
Enable AWS Backup to manage and automate backups for EBS volumes and configure cross-region backup replication.
- C
Use an Amazon S3 Lifecycle policy to transition older backups to Amazon S3 Glacier for long-term storage.
- D
Configure an Amazon RDS Multi-AZ deployment for the application database to ensure high availability.
- E
Use AWS Storage Gateway to replicate application data to an on-premises data center for additional redundancy.
Show answer and explanation
Correct answers: B, C
Explanation
A reliable backup strategy should include automated and managed solutions like AWS Backup with cross-region replication to protect against region-wide failures. Additionally, transitioning older backups to cost-effective storage like S3 Glacier helps manage long-term storage costs efficiently. These strategies together provide robust and comprehensive backup coverage.
- A. Incorrect.
Creating EBS snapshots in the same region provides basic backup protection, but it does not protect against region-wide failures, such as disasters impacting the entire region.
- B. Correct.
Using AWS Backup with cross-region replication ensures automated, managed backups and provides protection against region-wide failures, making it a comprehensive strategy.
- C. Correct.
An Amazon S3 Lifecycle policy to transition backups to S3 Glacier ensures cost-effective long-term storage of older backups, which is an important part of a reliable backup strategy.
- D. Incorrect.
Configuring an RDS Multi-AZ deployment is a high-availability solution, not a backup strategy. It ensures minimal downtime but does not provide a mechanism for recovering deleted or corrupted data.
- E. Incorrect.
Using AWS Storage Gateway to replicate data to an on-premises data center can provide redundancy, but it is not typically the most reliable or scalable option for a cloud-native backup strategy.