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Difficulty: MediumAmazon S3 Storage Class and Lifecycle Optimization

A SysOps administrator is designing an Amazon S3 Lifecycle policy to manage storage costs for weekly generated audit reports stored in an S3 Standard bucket. The reports are frequently accessed during the first 3030 days. After 3030 days, the reports are occasionally accessed but must be available immediately. After 6060 days, the reports are rarely accessed, but they must be retained for 77 years (25552555 days) for compliance purposes. The administrator wants to use S3 Glacier Deep Archive for long-term storage, as retrieval times of up to 1212 hours are acceptable. Which lifecycle configuration is valid and minimizes storage costs?

  1. Transition objects to S3 Standard-IA after 3030 days, transition objects to S3 Glacier Deep Archive after 6060 days, and expire objects after 25552555 days.Answer
  2. B
    Transition objects to S3 Standard-IA after 3030 days, transition objects to S3 Glacier Deep Archive after 5050 days, and expire objects after 25552555 days.
  3. C
    Transition objects to S3 Glacier Deep Archive after 3030 days, transition objects to S3 Standard-IA after 6060 days, and expire objects after 25552555 days.
  4. D
    Transition objects to S3 Standard-IA after 3030 days, transition objects to S3 Glacier Instant Retrieval after 4545 days, and expire objects after 25552555 days.

Answer

Transition objects to S3 Standard-IA after 3030 days, transition objects to S3 Glacier Deep Archive after 6060 days, and expire objects after 25552555 days.
The configuration that transitions objects to S3 Standard-IA after 3030 days and then to S3 Glacier Deep Archive after 6060 days is valid and minimizes costs. Amazon S3 Lifecycle rules require that objects spend at least 3030 days in S3 Standard-IA before transitioning to S3 Glacier Flexible Retrieval or S3 Glacier Deep Archive. Since the transition to Glacier Deep Archive occurs at day 6060, the objects spend exactly 3030 days in S3 Standard-IA (60−30=3060 - 30 = 30), satisfying the minimum duration requirement. S3 Glacier Deep Archive is also the most cost-effective storage class for archival data that can tolerate retrieval times of up to 1212 hours.

Step-by-Step Solution

1
Determine the initial storage duration and the target storage class for occasional immediate access.
The objects must stay in S3 Standard for 3030 days and then transition to S3 Standard-IA.
This matches the requirement for frequent access during the first 3030 days followed by occasional, immediate access.
2
Calculate the earliest valid day to transition objects from S3 Standard-IA to S3 Glacier Deep Archive.
Since S3 Standard-IA requires a minimum storage duration of 3030 days before transitioning to S3 Glacier classes, the transition to S3 Glacier Deep Archive must be scheduled for day 6060 or later (30+30=6030 + 30 = 60).
Transitioning earlier than 3030 days after moving to S3 Standard-IA will cause an S3 Lifecycle rule validation failure.
3
Set the expiration action for the compliance retention period.
Configure the expiration action to execute after 25552555 days.
This satisfies the 77-year compliance retention requirement.

Key Concept

Amazon S3 Lifecycle transition rules and minimum storage constraints
Estimated Time:1m 30s
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Topics

Amazon S3 Storage Class and Lifecycle Optimization

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