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Difficulty: EasyCost-Optimized Storage Tiering and Lifecycle Management

A logistics company uploads daily vehicle telemetry reports averaging 10 MB10\text{ MB} to an Amazon S3 Standard bucket. The files are accessed frequently for the first 3030 days, after which they are rarely accessed. The reports must be retained for a total of 9090 days and can then be deleted.

Which TWO configurations should a solutions architect implement in an S3 Lifecycle policy to meet these requirements cost-effectively?

  1. Transition the reports to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) 3030 days after creationAnswer
  2. Configure the lifecycle policy to expire the reports 9090 days after creationAnswer
  3. C
    Transition the reports to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) 7575 days after creation
  4. D
    Transition the reports to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) 1010 days after creation
  5. E
    Transition the reports to Amazon S3 Glacier Flexible Retrieval 1515 days after creation

Answer

Configure the lifecycle policy to transition the reports to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) 3030 days after creation and expire the reports 9090 days after creation.
Transitioning the reports to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) 3030 days after creation matches the access pattern, as the files become rarely accessed after 3030 days. Because they are deleted 9090 days after creation, they reside in S3 Standard-IA for 6060 days, which exceeds the 3030-day minimum storage duration requirement. Expiring the reports 9090 days after creation satisfies the data retention requirement and stops further storage charges.

Step-by-Step Solution

1
Analyze the data access pattern and retention period
Reports are frequently accessed for the first 3030 days, rarely accessed from day 3131 to 9090, and deleted at day 9090.
This establishes the timeline for storage transitions and expiration.
2
Determine the optimal storage tier for the rarely accessed phase
S3 Standard-IA is ideal for rarely accessed data that requires immediate retrieval, provided the objects are stored there for at least 3030 days.
S3 Standard-IA offers lower storage costs than S3 Standard but charges for data retrieval and requires a 3030-day minimum storage period.
3
Select the lifecycle transitions and expiration rules that minimize cost without penalties
Transition to S3 Standard-IA on day 3030. The objects reside in S3 Standard-IA for 6060 days (until day 9090), avoiding the 3030-day minimum duration penalty. Expire the objects on day 9090 to stop storage charges completely.
This configuration aligns perfectly with the access pattern and avoids the minimum duration charge penalty.

Key Concept

Amazon S3 Lifecycle policies optimize storage costs by transitioning data to cheaper storage tiers or deleting it based on age, while taking into account minimum storage duration rules for tiers like S3 Standard-IA.
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Topics

Cost-Optimized Storage Tiering and Lifecycle Management