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DEA-C01 · Question #11

A company currently stores all of its data in Amazon S3 by using the S3 Standard storage class. A data engineer examined data access patterns to identify trends. During the first 6 months, most data f

The correct answer is B. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer. To cost-effectively manage data with varying access patterns while maintaining high availability, objects should transition from S3 Standard to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months, and then to S3 Glacier Flexible Retrieval after 2 years.

Data Store Management

Question

A company currently stores all of its data in Amazon S3 by using the S3 Standard storage class. A data engineer examined data access patterns to identify trends. During the first 6 months, most data files are accessed several times each day. Between 6 months and 2 years, most data files are accessed once or twice each month. After 2 years, data files are accessed only once or twice each year. The data engineer needs to use an S3 Lifecycle policy to develop new data storage rules. The new storage solution must continue to provide high availability. Which solution will meet these requirements in the MOST cost-effective way?

Options

  • ATransition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer
  • BTransition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer
  • CTransition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer
  • DTransition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer

How the community answered

(18 responses)
  • A
    11% (2)
  • B
    72% (13)
  • C
    11% (2)
  • D
    6% (1)

Why each option

To cost-effectively manage data with varying access patterns while maintaining high availability, objects should transition from S3 Standard to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months, and then to S3 Glacier Flexible Retrieval after 2 years.

ATransition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer

S3 One Zone-Infrequent Access (S3 One Zone-IA) does not provide multi-AZ high availability, failing to meet the requirement.

BTransition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. TransferCorrect

S3 Standard-IA provides multi-AZ high availability for data accessed once or twice monthly, and S3 Glacier Flexible Retrieval offers cost-effective, multi-AZ archival storage with flexible retrieval options suitable for data accessed once or twice annually. This combination balances cost-effectiveness with the required high availability across all access tiers.

CTransition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer

While S3 Standard-IA is appropriate, S3 Glacier Deep Archive has longer retrieval times and higher retrieval costs per GB than S3 Glacier Flexible Retrieval, which may not be the most cost-effective overall solution for data accessed once or twice annually.

DTransition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer

S3 One Zone-Infrequent Access (S3 One Zone-IA) does not provide multi-AZ high availability, failing to meet the requirement.

Concept tested: S3 Lifecycle policies for cost optimization

Source: https://docs.aws.amazon.com/AmazonS3/latest/userguide/lifecycle-transition-intro.html

Topics

#S3 Lifecycle Policies#S3 Storage Classes#Cost Optimization#Data Availability

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