Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 62 discussion

concurrent access- EFS. Cost effectiveness- S3. Since S3 does not support concurrent access. I will go with EFS.

Correct Answer: D Using the AWS Simple Cost Calculator (Jan 2022), the cost of storage for 1TB a month is $81.92. However, 1TB in S3 Standard is $23.44. Since S3 does, in fact, support concurrency (https://aws.amazon.com/blogs/big-data/optimizing-amazon-s3-for-high-concurrency-in-distributed-workloads/), for cost-effectiveness and concurrency selecting S3 (Answer D) is the better answer.

ChatGPT agrees wit D To meet the requirement of retaining all application log files for 7 years, the log files can be uploaded to Amazon S3 buckets. Amazon S3 provides highly durable and scalable object storage, making it an ideal solution for storing log files that need to be retained for a long time. To ensure that the log files can be accessed concurrently by the reporting tool, the company can use Amazon S3's built-in features such as versioning and bucket-level permissions. Versioning allows the company to preserve, retrieve, and restore every version of the log files, while bucket-level permissions allow the reporting tool to access the log files concurrently.

S3 with configuration for Glacier is perfect use case

D - S3 due to cost

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question asking which more cost effective. Answer is D

Answer should be EFS. Cost savings with EFS IA and can also be used to store logs as per below (from https://aws.amazon.com/efs/faq/) Q. When should I use EFS Intelligent-Tiering? Use EFS Intelligent-Tiering to automatically move files between performance-optimized and cost-optimized storage classes when data access patterns are unknown. Enable EFS Lifecycle Management by choosing a policy to automatically move files to EFS Standard-IA or EFS One Zone-IA. Additionally, choose a policy to automatically move files back to EFS Standard or EFS One Zone when they’re accessed. With EFS Intelligent-Tiering, you can save on storage costs even if your application access patterns are unknown or access patterns change over time. With these two Lifecycle Management policies set, you pay only for data transition charges between storage classes, and not for repeated data access. Examples of workloads that may have unknown access patterns include web assets and blogs stored by content management systems, logs, machine learning (ML) inference files, and genomic data.

"concurrent" write means EFS, but for logs I think they only need to read. S3 can satisfy that and also cost effective. EFS for archiving logs kinda sus too.

EFS with lifcylcle policy to EFS-IA. I wonder if they

cost-effectiveness, I choose D

D , S3 does not support concurrent write Amazon S3 does not support object locking for concurrent writers but since it is reporting in this case , it is read

7 years using EFS very expensive. best answer is D

concurrent access- EFS.

s3 saving cost

S3 - 7 years, and cost efficient