Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 252 discussion

EFS Amazon Elastic File System (EFS) automatically grows and shrinks as you add and remove files with no need for management or provisioning.

"accessible from multiple application servers that run on Amazon EC2 instances"

my choice is A but I think a better alternative would be S3 standard if offered wouldn't it be?

File system, scalable, multiple access = Amazon Elastic File System (Amazon EFS)

Amazon Elastic File System (Amazon EFS)

EFS provides a scalable and fully managed file storage service that can be accessed concurrently from multiple EC2. It offers built-in redundancy by storing data across multiple AZs within a region. With EFS, the client case files can be accessed by multiple application servers simultaneously, ensuring high availability and scalability as the number of files grows over time. Option B, EBS, is a block-level storage service that is typically used for attaching to individual EC2 and does not provide concurrent access to multiple instances, making it unsuitable for this scenario. Option C, S3 Glacier Deep Archive, is a long-term archival storage service and may not be suitable for active file access and simultaneous access from multiple application servers. Option D, AWS Backup, is a centralized backup management service and does not provide the required simultaneous file access and redundancy features. Therefore, the most suitable solution is Amazon EFS (option A).

Option A meets the requirements, hence A is correct answer.

What does "The solution must have built-in redundancy" mean

If the application servers are running on Linux or UNIX operating systems, EFS is a the most suitable solution for the given requirements.

Correct answer is A

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