Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 842 discussion

A is oke but it says "'AWS managed service solution" So I go for D

(A,B,C) are eliminated. They are NOT managed service solutions. (D) is correct. 'AWS Backup offers a cost-effective, FULLY MANAGED, policy-based service that simplifies data protection at scale.' https://aws.amazon.com/getting-started/hands-on/amazon-efs-backup-and-restore-using-aws-backup/

A is cheaper and less complicated to impliment compared to D

Aws backup is not replicating. Efs replication is and it's managed in that you configure it and then it does the replication - no further actions required. It's also cheapest since it's free, you just pay for data transfer and storage https://docs.aws.amazon.com/efs/latest/ug/efs-replication.html https://aws.amazon.com/blogs/aws/new-replication-for-amazon-elastic-file-system-efs/

AnswerD I think the most cost effective would solution presented in C, but hence in question it's clearly wrote that we should use AWS Managed Services Solution, hence I think we have no other choice then to choose AWS backup (Option D)

A: Replication is available in all AWS Regions in which EFS is available. To use replication in a Region that is disabled by default, you must first opt in to the Region. For more information, see Managing AWS Regions in the AWS General Reference Reference Guide. If you later opt out of a Region, Amazon EFS pauses all replication activities for the Region. To resume replication activities for the Region, you need to again opt in to the AWS Region. https://docs.aws.amazon.com/efs/latest/ug/efs-replication.html

A. you can replicate to another Region

NOTA: EFS-to-EFS backup: You must deploy this solution in the same AWS Region as your source Amazon EFS Folesystem Not B, C: Not a managed AWS Solution D: AWS backup will do the job, and is managed service.

To me "an AWS managed service solution" automatically translates to AWS Backup. ...Can't say if this is cheaper than EFS replication tho.

To replicate data from an Amazon Elastic File System (EFS) file system to another AWS Region, the MOST cost-effective solution would be to use EFS Replication. Here’s why: EFS Replication: EFS Replication allows you to natively create a copy of your file system in an AWS Region or Availability Zone (AZ) of your choice. It automatically and transparently copies your data from the source file system to the destination, maintaining an RPO (Recovery Point Objective) of 15 minutes for most file systems. This solution is specifically designed for replicating EFS data across Regions, ensuring data resilience and protection. There are no additional costs for using replication failback, and you pay for the usual replication and file system changes as described in Amazon EFS pricing12. EFS Replication is available in all AWS Regions where EFS is available1.