Q49 — AWS SAA-C03 Ch.16

Question 49 of 100 | ← Chapter 16

Q1249. An online food delivery company wants to optimize its storage costs.The company has been collecting operational data for the last 10 years in a data lake that was built on Amazon S3 by using a Standard storage class. The company does not keep data that is older than 7 years.A solutions architect frequently uses data from the past 6 months for reporting and runs queries on data from the last 2 years about once a month. Data that is more than 2 years old is rarely accessed and is only used for audit purposes. Which combination of solutions will optimize the company's storage costs?(Select TWO.)

• A. Create an S3 Lifecycle configuration rule to transition data that is older than 6 months to the S3 Standard-lnfrequent Access(S3 Standard-lA) storage class. Create another S3 Lifecycle configuration rule to transition data that is older than 2 years to the S3 Glacier Deep Archive storage class. ✓
• B. Create an S3 Lifecycle configuration rule to transition data that is older than 6 months to the S3 One Zone-lnfrequent Access (S3 One Zone-lA) storage class. Create another S3 Lifecycle configuration rule to transition data that is older than 2 years to the S3 Glacier Flexible Retrieval storage class.
• C. Use the S3 Intelligent-Tiering storage class to store data instead of the S3 Standard storage class.
• D. Create an S3 Lifecycle expiration rule to delete data that is older than 7 years. ✓
• E. Create an S3 Lifecycle configuration rule to transition data that is older than 7 years to the S3 Glacier Deep Archive storage class.

Correct Answer: A. Create an S3 Lifecycle configuration rule to transition data that is older than 6 months to the S3 Standard-lnfrequent Access(S3 Standard-lA) storage class. Create another S3 Lifecycle configuration rule to transition data that is older than 2 years to the S3 Glacier Deep Archive storage class., D. Create an S3 Lifecycle expiration rule to delete data that is older than 7 years.

Explanation

The company wants to optimize storage costs while maintaining accessibility for different data access patterns:Frequently accessed (past 6 months): Should remain in a low-latency, high-availability storage class (e.g., S3 Standard).Infrequently accessed (6 months? years): Should move to a cheaper, lower-availability class (e.g., S3 Standard-IA or S3 Intelligent-Tiering).Rarely accessed (older than 2 years, audit purposes): Should move to the cheapest archival storage (e.g., S3 Glacier Deep Archive).Data older than 7 years: Should be deleted (since the company does not retain it).Correct Answers: A and DA. Create an S3 Lifecycle configuration rule to transition data older than 6 months to S3 Standard-IA, and another rule to transition data older than 2 years to S3 Glacier Deep Archive. S3 Standard-IA is cost-effective for infrequently accessed data (6 months? years). S3 Glacier Deep Archive is the cheapest option for rarely accessed, long-term archival data (older than 2 years).This meets the access pattern requirements while reducing costs. D. Create an S3 Lifecycle expiration rule to delete data older than 7 years. The company does not retain data beyond 7 years, so deletion is the most cost-effective approach.Avoids unnecessary storage costs for obsolete data.Why the Other Options Are IncorrectB (S3 One Zone-IA + S3 Glacier Flexible Retrieval):S3 One Zone-IA is cheaper but less durable (single AZ), making it risky for critical operational data. S3 Glacier Flexible Retrieval is more expensive than S3 Glacier Deep Archive for long-term archival.C (S3 Intelligent-Tiering):While useful for unpredictable access patterns, it does not provide the same cost savings as explicit lifecycle transitions (Standard-IA + Glacier Deep Archive).Not the most cost-efficient for this use case.E (Transition data older than 7 years to S3 Glacier Deep Archive):The company deletes data older than 7 years, so archiving it would incur unnecessary costs.ConclusionA and D are the best choices because:A optimizes storage costs by tiering data based on access frequency. D ensures obsolete data is deleted, avoiding unnecessary expenses.Final Answer:A, D