A media production studio uploads raw 4K video clips to Amazon S3. Each clip is approximat… — AWS Certified Solutions Architect - Associate

A media production studio uploads raw 4K video clips to Amazon S3. Each clip is approximately $2\text{ GB}$ in size. The clips are accessed frequently for editing and rendering during the first $25$ days after upload. After $25$ days, the clips are rarely accessed, but the studio must retain them for a total of $35$ days from the upload date to finalize client approvals, after which they can be permanently deleted. Which storage strategy is the most cost-effective?

A
Configure an S3 Lifecycle rule to transition the files to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) after $25$ days, and delete the files after $35$ days.
B
Configure an S3 Lifecycle rule to transition the files to Amazon S3 Glacier Flexible Retrieval after $25$ days, and delete the files after $35$ days.
Retain the files in Amazon S3 Standard for the entire $35$ days, and configure an S3 Lifecycle rule to delete the files after $35$ days.Cevap
D
Configure an S3 Lifecycle rule to transition the files to Amazon S3 Intelligent-Tiering immediately, and delete the files after $35$ days.

Cevap

Retain the files in Amazon S3 Standard for the entire

35

days, and configure an S3 Lifecycle rule to delete the files after

35

days.

Retaining the files in S3 Standard for the entire

35

days is the most cost-effective strategy. Because the files are only kept for

10

days after the frequent access period, transitioning them to S3 Standard-IA or S3 Glacier Flexible Retrieval triggers minimum billing duration penalties (

30

days for S3 Standard-IA and

90

days for S3 Glacier). These penalties, along with transition request fees, make the transition options more expensive than simply keeping the files in S3 Standard for the entire lifecycle.

Adım Adım Çözüm

Calculate the cost of keeping files in S3 Standard for the entire duration.

For

1\text{ GB}

of data stored for

35\text{ days}

, the cost is approximately

\frac{35}{30} \times \$0.023 = \$0.0268

Establishes the baseline cost for the non-tiered storage strategy.

Calculate the cost of transitioning to S3 Standard-IA at day

25

and deleting at day

35

25\text{ days}

in S3 Standard cost

\frac{25}{30} \times \$0.023 = \$0.0192

. Transitioning to S3 Standard-IA for the remaining

10\text{ days}

triggers a

30

-day minimum billing duration. The S3 Standard-IA cost is

\frac{30}{30} \times \$0.0125 = \$0.0125

. The total is

\$0.0192 + \$0.0125 = \$0.0317

per GB.

Determines the impact of the

30

-day minimum storage duration requirement for S3 Standard-IA.

Calculate the cost of transitioning to S3 Glacier Flexible Retrieval at day

25

and deleting at day

35

25\text{ days}

in S3 Standard cost

\$0.0192

. Transitioning to S3 Glacier Flexible Retrieval for the remaining

10\text{ days}

triggers a

90

-day minimum billing duration. The Glacier cost is

\frac{90}{30} \times \$0.0036 = \$0.0108

. The total is

\$0.0192 + \$0.0108 = \$0.0300

per GB (excluding transition fees).

Determines the impact of the

90

-day minimum storage duration requirement for S3 Glacier Flexible Retrieval.

Compare the total storage costs of all options.

The S3 Standard-only strategy (

\$0.0268

per GB) is cheaper than transitioning to S3 Standard-IA (

\$0.0317

per GB) or transitioning to S3 Glacier Flexible Retrieval (

\$0.0300

per GB).

Identifies the storage strategy that minimizes overall AWS charges.

Anahtar Kavram

S3 Lifecycle policies must account for minimum storage duration charges in colder storage classes (30 days for S3 Standard-IA, 90 days for S3 Glacier Flexible Retrieval) to avoid cost penalties on short-lived data.

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Cevap

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