Examkin

Question

Difficulty: HardAmazon S3 Storage Class and Lifecycle Optimization

A SysOps administrator is configuring an Amazon S3 Lifecycle policy to optimize storage costs for media archives. The files are uploaded to S3 Standard. The access patterns and requirements are as follows:

* For the first 3030 days, files are accessed frequently.
* From day 3131 to day 6060, files are accessed infrequently but must be available for immediate retrieval.
* After 6060 days, the files are rarely accessed, but any retrieval requests must be completed within 55 minutes.
* The files must be kept for a total of 365365 days before deletion.

Which TWO configuration steps should the administrator include in the lifecycle policy to meet these requirements in a valid and most cost-effective manner? (Select TWO.)

  1. Transition objects from S3 Standard to S3 Standard-IA after 3030 daysAnswer
  2. Transition objects from S3 Standard-IA to S3 Glacier Flexible Retrieval after 6060 daysAnswer
  3. C
    Transition objects from S3 Standard-IA to S3 Glacier Flexible Retrieval after 4545 days
  4. D
    Transition objects from S3 Standard-IA to S3 Intelligent-Tiering after 6060 days
  5. E
    Transition objects from S3 Standard-IA to S3 Glacier Deep Archive after 6060 days

Answer

Transition objects from S3 Standard to S3 Standard-IA after 3030 days, and transition objects from S3 Standard-IA to S3 Glacier Flexible Retrieval after 6060 days.
To satisfy the requirements cost-effectively, the lifecycle policy must first transition objects to S3 Standard-IA after 3030 days. Since the files must then transition to an archive storage class after 6060 days (which is exactly 3030 days after transitioning to Standard-IA), this meets the S3 Lifecycle policy restriction that requires objects to remain in S3 Standard-IA for at least 3030 days. S3 Glacier Flexible Retrieval is the most cost-effective archive class that meets the retrieval requirement of under 55 minutes because it supports Expedited retrievals (11-55 minutes).

Step-by-Step Solution

1
Determine the first transition class and timing based on access patterns.
Transition to S3 Standard-IA after 3030 days.
The files are frequently accessed for the first 3030 days and then infrequently accessed but require immediate retrieval, which matches S3 Standard-IA features and minimum duration billing rules.
2
Check the validity of subsequent transition timing under S3 Lifecycle restrictions.
Ensure that any transition from S3 Standard-IA to a Glacier storage class occurs at least 3030 days after the transition to Standard-IA.
S3 Lifecycle policies require objects to spend at least 3030 days in S3 Standard-IA before transitioning to S3 Glacier classes. Since the transition to Standard-IA is at day 3030, the next transition must be at day 6060 or later.
3
Select the appropriate target storage class for the long-term archiving phase based on retrieval SLAs.
Choose S3 Glacier Flexible Retrieval with Expedited retrievals.
Expedited retrievals under S3 Glacier Flexible Retrieval take 11 to 55 minutes, satisfying the 55-minute retrieval SLA. S3 Glacier Deep Archive is incorrect because its fastest retrieval is 1212 hours.

Key Concept

S3 Lifecycle transition rules and storage class retrieval times
Rate this question

Topics

Amazon S3 Storage Class and Lifecycle Optimization

More questions from this topic