Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 956 discussion

D is the correct answer for 30 days - use Amazon S3 standard 2 years Retaining - Glacier Deep Archive Can not be Disrupted - On-Demand Instances

I understand that D is the right anwser

1. The short-lived batch jobs cannot be disrupted -> on demand. A and C are out 2. The data is accessed for 30 days and retained for 2 years. means S3 Standard (30 days) -> S3 Glacier -> expire. S3 Glicer instant Retrieval has a minimum storage for 90 days, so B is out.

B - Amazon S3 Glacier Instant Retrieval is an archive storage class that delivers the lowest-cost storage for long-lived data that is rarely accessed and requires retrieval in milliseconds. So this is wrong because "The data is accessed for 30 days".

The correct answer is D. Deploy Amazon EC2 On-Demand Instances to run the batch jobs. Store the data in Amazon S3 Standard. Move the data to Amazon S3 Glacier Deep Archive after 30 days. Set an expiration to delete the data after 2 years. Explanation: Option D: Correct. Since the batch jobs cannot be disrupted, using Amazon EC2 On-Demand Instances ensures the application runs without interruption. Initially storing data in Amazon S3 Standard allows for access during the 30-day period post-processing. Moving the data to Amazon S3 Glacier Deep Archive after 30 days optimizes storage costs for long-term retention of up to 2 years, the lowest cost for infrequent access. Setting an expiration ensures the data is deleted after 2 years, controlling costs and data lifecycle management.

I am always confused about the choice between s3 standard and s3 glacier instant... short period of storage + frequently retrieve ==> s3 standard long period of storage + infrequently retrieve ==> s3 glacier instant s3 standard: $0.023 per GB for storage / $0.0004 get, select per 1000 request s3 glacier instant: $0.004 per GB for storage /$0.01 get, select per 1000 request https://aws.amazon.com/s3/pricing/?nc=sn&loc=4

https://aws.amazon.com/about-aws/whats-new/2021/11/amazon-s3-glacier-instant-retrieval-storage-class/ - The easiest way to store data in S3 Glacier Instant Retrieval is to use the S3 PUT API to upload data directly, or use S3 Lifecycle to transition data from the S3 Standard and S3 Standard-IA storage classes. - The company wants to keep the cost of running the application in the AWS Cloud as low as possible => B

D is correct

I VOTE C

Job cannot be disrupted - On demand