CloudGuild · Blog · Cheat sheets · Lessons · Certifications
Mastering Disaster Recovery Solutions on AWS
Understand how to choose the right AWS service for disaster recovery. This post walks through a typical exam question.
A common stumbling block for candidates is selecting the appropriate AWS service for disaster recovery scenarios. Many confuse long-term storage options with those designed for quick restoration. This choice can be critical for maintaining business continuity.
The question
A company is architecting a disaster recovery solution that involves backing up its data from on-premises servers to AWS. The company wants to ensure that the data can be restored quickly in the event of a disaster. Which AWS service should the company use to facilitate this?
A. AWS Storage Gateway
B. Amazon S3 Glacier
C. AWS Backup
D. Amazon EFS
Think before you scroll
Before making a choice, consider the requirements of quick restore versus long-term storage. Understanding the purpose of each service will help you identify the best fit for disaster recovery.
The answer
The correct option is A. AWS Storage Gateway. This service is designed for seamless integration between on-premises environments and AWS, allowing for quick backups and restores of data. It supports rapid recovery, which is essential in a disaster recovery scenario.
Why the other options lose
B. Amazon S3 Glacier: This service is intended for long-term archival storage. It is not designed for rapid data restoration, which does not meet the company’s requirement for quick recovery in a disaster.
C. AWS Backup: While AWS Backup is a management tool for backups, it does not directly facilitate integration with on-premises systems. It’s useful for managing backups across AWS services but lacks the immediate accessibility needed for disaster recovery.
D. Amazon EFS: Amazon Elastic File System (EFS) is primarily used for file storage, not specifically for backups. It does not provide the same quick restoration capabilities as AWS Storage Gateway.
The concept behind it
The principle here is understanding the distinction between services meant for backup versus those designed for integration and quick recovery. AWS Storage Gateway is tailored for hybrid environments, making it the best choice for companies needing immediate access to their data during a disaster.
Exam trap to remember
Remember: for disaster recovery needs focused on quick restoration, choose services that integrate directly with on-premises environments, like AWS Storage Gateway.