A company runs a high-volume media processing platform that stores source files in an Amaz… — AWS Certified SysOps Administrator - Associate

A company runs a high-volume media processing platform that stores source files in an Amazon S3 bucket with versioning enabled. A SysOps administrator must configure an S3 Lifecycle policy to optimize storage costs based on the following requirements:
- Current versions (average size $150\text{ MB}$ ): Accessed frequently for the first $30\text{ days}$ . After $30\text{ days}$ , they are accessed occasionally and must remain immediately accessible. After $45\text{ days}$ , they are rarely accessed but must be retrievable within $5\text{ minutes}$ when requested.
- Noncurrent versions: Retained for $180\text{ days}$ after becoming noncurrent. They are rarely accessed, but must be available with millisecond retrieval times if requested.

Which S3 Lifecycle configuration meets these requirements in the most cost-effective manner while avoiding S3 validation errors and early transition or deletion fees?

Configure a rule for current versions to transition to S3 Standard-Infrequent Access (Standard-IA) after $30\text{ days}$ and to S3 Glacier Flexible Retrieval after $60\text{ days}$ . Configure a rule for noncurrent versions to transition to S3 Glacier Instant Retrieval after $1\text{ day}$ and expire after $180\text{ days}$ .Cevap
B
Configure a rule for current versions to transition to S3 Standard-Infrequent Access (Standard-IA) after $15\text{ days}$ and to S3 Glacier Flexible Retrieval after $45\text{ days}$ . Configure a rule for noncurrent versions to transition to S3 Glacier Deep Archive after $1\text{ day}$ and expire after $180\text{ days}.
C
Configure a rule for current versions to transition to S3 Standard-Infrequent Access (Standard-IA) after $30\text{ days}$ and to S3 Glacier Flexible Retrieval after $45\text{ days}$ . Configure a rule for noncurrent versions to transition to S3 Glacier Instant Retrieval after $1\text{ day}$ and expire after $180\text{ days}.
D
Configure a rule for current versions to transition to S3 Standard-Infrequent Access (Standard-IA) after $30\text{ days}$ and to S3 Glacier Instant Retrieval after $60\text{ days}$ . Configure a rule for noncurrent versions to transition to S3 Standard-Infrequent Access (Standard-IA) after $1\text{ day}$ and to S3 Glacier Flexible Retrieval after $15\text{ days}$ , then expire after $180\text{ days}.

Cevap

Configure a rule for current versions to transition to S3 Standard-Infrequent Access (Standard-IA) after 30 days and to S3 Glacier Flexible Retrieval after 60 days. Configure a rule for noncurrent versions to transition to S3 Glacier Instant Retrieval after 1 day and expire after 180 days.

The correct configuration transitions current versions to S3 Standard-IA at day 30, satisfying the 30-day minimum age requirement. It then transitions them to S3 Glacier Flexible Retrieval at day 60, ensuring they spend at least 30 days in S3 Standard-IA to avoid early transition fees. Noncurrent versions are transitioned to S3 Glacier Instant Retrieval after 1 day, which provides the required millisecond retrieval capability, and they are expired after 180 days (exceeding the 90-day minimum storage duration for S3 Glacier Instant Retrieval).

Adım Adım Çözüm

Analyze current version lifecycle constraints for S3 Standard-IA.

Transitions from S3 Standard to S3 Standard-IA or S3 One Zone-IA require objects to be stored in the source class for at least 30 days. Therefore, transition to S3 Standard-IA can only happen at day 30 or later.

To satisfy S3 Lifecycle validation limits on transition age.

Evaluate S3 Standard-IA minimum storage duration rules.

S3 Standard-IA has a 30-day minimum storage duration. Moving objects to S3 Glacier Flexible Retrieval at day 45 (after only 15 days in Standard-IA) would trigger early transition fees. Postponing the Glacier transition to day 60 ensures they spend 30 days in S3 Standard-IA, avoiding fees.

To prevent unexpected early transition charges.

Identify the correct storage class for noncurrent versions based on retrieval requirements.

Noncurrent versions must be available with millisecond retrieval times. Only S3 Glacier Instant Retrieval provides millisecond access among the Glacier classes. S3 Glacier Flexible Retrieval (minutes/hours) and S3 Glacier Deep Archive (hours) do not meet this requirement.

To satisfy the millisecond retrieval time SLA.

Verify Glacier Instant Retrieval minimum storage duration rules.

S3 Glacier Instant Retrieval has a minimum storage duration of 90 days. Expiring the noncurrent versions at day 180 is safe and will not incur early deletion fees.

To ensure no early deletion fees are charged on the noncurrent versions.

Anahtar Kavram

Amazon S3 Storage Class Lifecycle Rules and Minimum Storage Durations

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