SAA-C03 · Question #473
A company runs an application on Amazon EC2 instances that have instance store volumes attached. The application uses Amazon Elastic File System (Amazon EFS) to store files that are shared across a cl
The correct answer is C. Configure a lifecycle policy to move the files to the EFS Infrequent Access (IA) storage class after. Amazon EFS Lifecycle Management enables automatic cost optimization by transitioning files that haven't been accessed for a defined period (e.g., 7 days) from EFS Standard to EFS Infrequent Access (IA). "Amazon EFS Lifecycle Management automatically moves files that haven't been
Question
A company runs an application on Amazon EC2 instances that have instance store volumes attached. The application uses Amazon Elastic File System (Amazon EFS) to store files that are shared across a cluster of Linux servers. The shared files are at least 1 GB in size. The company accesses the files often for the first 7 days after creation. The files must remain readily available after the first 7 days. The company wants to optimize costs for the application. Which solution will meet these requirements?
Options
- AConfigure an AWS Storage Gateway Amazon S3 File Gateway to cache frequently accessed files
- BMove the files from Amazon EFS, and store the files locally on each EC2 instance.
- CConfigure a lifecycle policy to move the files to the EFS Infrequent Access (IA) storage class after
- DDeploy AWS DataSync to automatically move files older than 7 days to Amazon S3 Glacier Deep
How the community answered
(31 responses)- A16% (5)
- B3% (1)
- C74% (23)
- D6% (2)
Explanation
Amazon EFS Lifecycle Management enables automatic cost optimization by transitioning files that haven't been accessed for a defined period (e.g., 7 days) from EFS Standard to EFS Infrequent Access (IA). "Amazon EFS Lifecycle Management automatically moves files that haven't been accessed for a set period to the EFS Infrequent Access storage class, reducing storage costs for infrequently accessed files." EFS IA is ideal for files larger than 128 KB and accessed less frequently. It's seamless - no code or tools needed. Meets requirement for cost optimization and high availability. Incorrect Options: A: File Gateway adds unnecessary complexity and does not use EFS. B: Storing files locally breaks shared access and resiliency. D: Glacier Deep Archive is cold storage - not "readily available."
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