A genomic research laboratory runs sequencing pipelines on Amazon EC2 instances in a priva… — AWS Certified Solutions Architect - Associate

A genomic research laboratory runs sequencing pipelines on Amazon EC2 instances in a private subnet. The pipelines generate raw sequence files of approximately $150\text{ MB}$ each, which are stored in an Amazon S3 bucket. The data is accessed frequently and must be available immediately for the first $15\text{ days}$ . After $15\text{ days}$ , the files are rarely accessed but must be retained for at least $120\text{ days}$ to meet regulatory compliance requirements. Audits can tolerate a retrieval time of up to $5\text{ hours}$ .

Which TWO solutions should the solutions architect combine to meet these requirements in the most cost-effective manner? (Select TWO.)

Create an S3 Lifecycle rule to transition the objects to Amazon S3 Glacier Flexible Retrieval $15\text{ days}$ after creation.Cevap
Create an S3 Lifecycle rule to expire the objects $120\text{ days}$ after creation.Cevap
C
Create an S3 Lifecycle rule to transition the objects to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) $15\text{ days}$ after creation, and then to Amazon S3 Glacier Flexible Retrieval $30\text{ days}$ after creation.
D
Create an S3 Lifecycle rule to transition the objects to Amazon S3 Glacier Deep Archive $15\text{ days}$ after creation.
E
Route the data transfer from the private EC2 instances to Amazon S3 through a NAT Gateway, and transition the objects to Amazon S3 Glacier Flexible Retrieval $15\text{ days}$ after creation.

Cevap

To meet the requirements cost-effectively, the solutions architect should use S3 Lifecycle rules to transition the objects to Amazon S3 Glacier Flexible Retrieval

15\text{ days}

after creation, and expire the objects

120\text{ days}

after creation.

Transitioning files to Amazon S3 Glacier Flexible Retrieval after

15\text{ days}

is the most cost-effective tier because it meets the requirement of keeping files available immediately for the first

15\text{ days}

and allows standard retrievals within

3\text{ to }5\text{ hours}

, well within the

5\text{-hour}

audit limit. Expiring the objects after

120\text{ days}

ensures that they are deleted once the compliance retention period is reached, stopping all storage charges.

Adım Adım Çözüm

Identify the storage requirements for the active data phase.

Data must be stored in a tier that provides immediate and frequent access for the first

15\text{ days}

Since the genomic sequencing files must be accessed frequently and immediately during the initial phase, they should remain in Amazon S3 Standard for the first

15\text{ days}

before transition.

Evaluate the optimal archive tier for the inactive phase based on cost and access requirements.

Amazon S3 Glacier Flexible Retrieval is chosen instead of S3 Standard-IA or S3 Glacier Deep Archive.

The files are rarely accessed after

15\text{ days}

and can tolerate a retrieval time of up to

5\text{ hours}

. S3 Glacier Flexible Retrieval (standard retrieval of

3\text{ to }5\text{ hours}

) meets this recovery window at a much lower cost than S3 Standard-IA, while S3 Glacier Deep Archive (up to

12\text{ hours}

) is too slow.

Define the expiration rule for regulatory compliance.

The files are set to expire

120\text{ days}

after creation.

The regulatory compliance rules require retaining files for at least

120\text{ days}

, after which they are no longer needed, so an expiration rule stops ongoing storage costs.

Anahtar Kavram

Selecting the most cost-effective S3 storage tier based on access patterns, retrieval times, minimum storage durations, and expiration requirements.

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