A financial services company generates daily transaction audit logs averaging 10\text{ MB}… — AWS Certified Solutions Architect - Associate

A financial services company generates daily transaction audit logs averaging $10\text{ MB}$ in size. These files are stored in an Amazon S3 Standard bucket. The logs are accessed frequently during the first $12\text{ days}$ following their creation. After $12\text{ days}$ , access to these files drops to zero. According to the company's compliance policy, the logs must be retained for a total of $28\text{ days}$ from their creation date, after which they must be permanently deleted. Which lifecycle policy configuration is the MOST cost-effective for managing these files?

Retain the files in Amazon S3 Standard for the entire $28\text{ days}$ and configure a lifecycle rule to permanently delete them after $28\text{ days}$ .Cevap
B
Transition the files to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) after $12\text{ days}$ and configure a lifecycle rule to permanently delete them after $28\text{ days}$ .
C
Transition the files to Amazon S3 Glacier Flexible Retrieval after $12\text{ days}$ and configure a lifecycle rule to permanently delete them after $28\text{ days}$ .
D
Transition the files to Amazon S3 Intelligent-Tiering on day 1 and configure a lifecycle rule to permanently delete them after $28\text{ days}$ .

Cevap

Retain the files in Amazon S3 Standard for the entire

28\text{ days}

and configure a lifecycle rule to permanently delete them after

28\text{ days}

Keeping the files in S3 Standard for the entire

28\text{ days}

is the most cost-effective option because any transition to S3 Standard-IA or S3 Glacier Flexible Retrieval after

12\text{ days}

would leave the files in those tiers for only

16\text{ days}

. This is less than the minimum storage duration requirements of

30\text{ days}

for S3 Standard-IA and

90\text{ days}

for S3 Glacier Flexible Retrieval, leading to prorated minimum duration charges that exceed the cost of S3 Standard. Transitioning to S3 Intelligent-Tiering also incurs monitoring fees without any cost benefit, as files are deleted before they can transition to lower-cost tiers.

Adım Adım Çözüm

Analyze the lifecycle of the files, noting that they are created, accessed for

12\text{ days}

, and deleted after

28\text{ days}

(total lifetime is

28\text{ days}

Calculate the duration of time the files would spend in a secondary storage class if transitioned after

12\text{ days}

, which is

28 - 12 = 16\text{ days}

Evaluate the minimum storage duration requirements for S3 Standard-IA (

30\text{ days}

) and S3 Glacier Flexible Retrieval (

90\text{ days}

Determine that transitioning the files to these tiers would trigger early deletion/minimum storage duration penalties, offsetting any potential storage tier savings, and that S3 Intelligent-Tiering would add monitoring fees without tiering benefits because the files are deleted before the

30\text{-day}

inactivity threshold.

Anahtar Kavram

Understanding S3 storage class minimum storage duration charges and lifecycle transition rules.

Tahmini Süre:1m 30s

Soru

Cevap

Adım Adım Çözüm

Anahtar Kavram

Sık Yapılan Hatalar

Konular