Examkin

Question

Difficulty: MediumCost-Optimized Storage Tiering and Lifecycle Management

A financial analytics firm processes transaction registry logs that are uploaded daily to an Amazon S3 Standard bucket. The log files average 45 MB45\text{ MB} in size. The logs are accessed frequently by analytics applications during the first 1010 days after upload. Between day 1010 and day 4545, the logs are rarely accessed but must be immediately available for regulatory audits. After 4545 days, the logs are only needed for historical compliance and can be retrieved within 1212 hours. The logs must be permanently deleted after 365365 days.

Which of the following actions should a solutions architect combine in an S3 Lifecycle policy to meet these requirements in the most cost-effective manner? (Select TWO.)

  1. Transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) 1010 days after the upload date.Answer
  2. Transition the objects to Amazon S3 Glacier Deep Archive 4545 days after the upload date.Answer
  3. C
    Transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) 3030 days after the upload date, and then to Amazon S3 Glacier Deep Archive 4545 days after the upload date.
  4. D
    Transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) 55 days after the upload date.
  5. E
    Transition the objects to Amazon S3 Glacier Flexible Retrieval 1010 days after the upload date, and then to Amazon S3 Glacier Deep Archive 4545 days after the upload date.

Answer

Configure S3 Lifecycle transitions to move objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 1010 days, and then to Amazon S3 Glacier Deep Archive after 4545 days.
The correct strategy transitions the objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 1010 days when frequent access ends. The files remain in S3 Standard-IA for 3535 days (from day 1010 to day 4545), satisfying the 3030-day minimum storage duration of S3 Standard-IA. After day 4545, transitioning the files to Amazon S3 Glacier Deep Archive minimizes storage costs while meeting the 1212-hour retrieval requirement.

Step-by-Step Solution

1
Analyze the active and infrequent access windows of the data pattern.
Frequent access lasts for 1010 days (requires S3 Standard), followed by infrequent access with immediate availability until day 4545 (requires a tier with immediate retrieval like S3 Standard-IA).
Ensures that data is kept in the correct performance tier based on active usage timelines.
2
Calculate the duration spent in the S3 Standard-IA tier to check for minimum duration constraints.
The duration from day 1010 to day 4545 is 3535 days. This is greater than the 3030-day minimum storage duration constraint of S3 Standard-IA.
Allows us to safely transition to S3 Standard-IA without incurring early deletion or transition penalties.
3
Select the appropriate archiving tier for compliance storage after day 4545.
After 4545 days, the data requires retrieval within 1212 hours. Amazon S3 Glacier Deep Archive offers standard retrieval within 1212 hours at the lowest storage cost.
Meets the audit recovery time objective of 1212 hours while optimizing long-term storage costs.

Key Concept

Amazon S3 Lifecycle rules and storage tier minimum storage duration rules
Rate this question

Topics

Cost-Optimized Storage Tiering and Lifecycle Management