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Zorluk: OrtaAmazon S3 Storage Class and Lifecycle Optimization

A SysOps administrator is designing an Amazon S3 Lifecycle policy to manage storage costs for weekly database backup files. The backups are stored in an S3 Standard bucket and accessed frequently for the first 3030 days. Between day 3131 and day 6060, the backups are accessed occasionally but must remain available for immediate retrieval. After 6060 days, the backups are rarely accessed but must be retained for compliance for a total of 365365 days, with a retrieval time of up to 55 hours being acceptable. Which of the following lifecycle rule configurations meets these requirements in the most cost-effective manner without causing a lifecycle policy validation error?

  1. A lifecycle rule to transition objects to S3 Standard-IA after 3030 days, and to S3 Glacier Flexible Retrieval after 6060 days.Cevap
  2. B
    A lifecycle rule to transition objects to S3 Standard-IA after 3030 days, and to S3 Glacier Flexible Retrieval after 4545 days.
  3. C
    A lifecycle rule to transition objects to S3 Standard-IA after 1515 days, and to S3 Glacier Flexible Retrieval after 3030 days.
  4. D
    A lifecycle rule to transition objects to S3 Glacier Flexible Retrieval after 3030 days, and to S3 Standard-IA after 6060 days.

Cevap

The lifecycle rule that transitions objects to S3 Standard-IA after 3030 days and to S3 Glacier Flexible Retrieval after 6060 days meets all access, retrieval, and cost requirements while respecting the mandatory 3030-day transition interval.
The correct answer configuration transitions the backups to S3 Standard-IA on day 3030 and to S3 Glacier Flexible Retrieval on day 6060. This aligns perfectly with the storage tier requirements, and the 3030-day gap between transitions meets the S3 lifecycle validation requirement (which requires the colder class transition day to be at least 3030 days after the warmer class transition day).

Adım Adım Çözüm

1
Analyze the access pattern and retrieval requirements for each phase of the file lifecycle.
Files are accessed frequently for the first 3030 days (requires S3 Standard), accessed occasionally with immediate retrieval from day 3131 to 6060 (requires S3 Standard-IA), and accessed rarely after 6060 days with a retrieval SLA of up to 55 hours (requires S3 Glacier Flexible Retrieval).
This establishes the appropriate S3 storage classes for each phase of the retention cycle.
2
Calculate the required transition times and check for lifecycle rule validation constraints.
Transition to S3 Standard-IA should occur at day 3030, and transition to S3 Glacier Flexible Retrieval should occur at day 6060. The difference between the two transition days is 60−30=3060 - 30 = 30 days.
Amazon S3 lifecycle validation requires that the transition to S3 Glacier must be scheduled at least 3030 days after the transition to S3 Standard-IA.
3
Evaluate the proposed options against the lifecycle validation rule and selection criteria.
Only the configuration with transition to S3 Standard-IA at day 3030 and S3 Glacier Flexible Retrieval at day 6060 satisfies the minimum 3030-day interval constraint while correctly mapping to the required storage classes.
This guarantees the policy is accepted by Amazon S3 and achieves optimal cost-efficiency.

Anahtar Kavram

Amazon S3 Lifecycle transition rules require that the transition day specified for a colder storage class (like S3 Glacier) must be at least 3030 days greater than the transition day specified for the preceding warmer storage class (like S3 Standard-IA) in the same rule.
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Amazon S3 Storage Class and Lifecycle Optimization

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