AWS Certified Solutions Architect Associate SAA-C03 Practice Question
A company has a large number of EC2 instances that generate logs on a daily basis. The logs must be preserved securely for a period of 1 year for compliance reasons, with immediate availability for the first 30 days and infrequent access thereafter. Which of the following backup strategies would be the most cost-effective while meeting the company's requirements?
Store all the logs directly in Amazon S3 Glacier for the duration of the 1-year period.
Use Amazon S3 One Zone-Infrequent Access for log storage, without any transition to other storage classes.
Use Amazon S3 with a lifecycle policy to transition logs to the S3 Standard-Infrequent Access (IA) tier after 30 days and then to Amazon S3 Glacier after 30 more days.
Use Amazon EBS snapshots for daily backups, retaining them for the entire year.
The correct answer provides a cost-effective backup strategy that meets the requirements: storing logs with immediate access for the first month and less frequent access afterwards. Transitioning logs from Amazon S3 Standard to the S3 Standard-Infrequent Access (IA) tier after 30 days and then to Amazon S3 Glacier for long-term storage uses tiered storage to optimize costs. Storing logs directly on S3 Glacier or EBS volumes would either compromise the requirement for immediate access or result in higher costs due to lack of lifecycle management and tiered storage benefits, making these options less ideal for the scenario described.
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