A global media broadcasting corporation is designing a disaster recovery (DR) solution for… — AWS Certified Solutions Architect - Associate

A global media broadcasting corporation is designing a disaster recovery (DR) solution for its historical video archive system. The archive contains over $10\text{ PB}$ of footage that must be stored with maximum durability ( $99.999999999\%$ ) across multiple geographic locations to protect against regional disasters. In the event of a primary site failure, the company's business continuity plan dictates a Recovery Time Objective (RTO) of under $15\text{ minutes}$ to resume search and retrieval operations for the video files. Which storage and disaster recovery configuration meets these requirements?

A
Store the video archive in Amazon S3 Glacier Flexible Retrieval with Cross-Region Replication (CRR) enabled to a secondary Region. In the event of a disaster, use Standard Retrieval requests to access the archived video files, which requires $3\text{ to }5\text{ hours}$ to complete.
Store the video archive in Amazon S3 Standard with Cross-Region Replication (CRR) enabled to a destination bucket in a secondary Region. Deploy a Warm Standby disaster recovery environment in the secondary Region with pre-provisioned, scaled-down catalog search services to meet the $15\text{-minute}$ retrieval timeline.Cevap
C
Store the video archive in Amazon S3 Standard with Cross-Region Replication (CRR) enabled to a secondary Region. Use a Pilot Light disaster recovery strategy where all application servers in the secondary Region are kept stopped to minimize cost, resulting in a recovery process that exceeds the $15\text{-minute}$ target.
D
Store the archive catalog in Amazon RDS for PostgreSQL. Configure a cross-Region Read Replica in the secondary Region, and rely on AWS-managed automatic failover to promote the Read Replica to the primary write instance within $15\text{-minutes}$ during a regional outage.

Cevap

Store the video archive in Amazon S3 Standard with Cross-Region Replication (CRR) and use a Warm Standby disaster recovery strategy in the secondary Region.

Storing the video archive in Amazon S3 Standard ensures that files are immediately accessible with sub-second retrieval latency, meeting the need for rapid search and recovery. Enabling Cross-Region Replication (CRR) asynchronously copies the data to a destination bucket in a secondary Region, achieving the required cross-region high availability and

99.999999999\%

durability. Implementing a Warm Standby disaster recovery strategy ensures that critical services (such as catalog search) are already running in a scaled-down capacity in the secondary Region, permitting failover to complete well within the

15\text{-minute}

RTO.

Adım Adım Çözüm

Analyze storage durability and recovery time requirements.

Durability must be

99.999999999\%

across multiple Regions, and retrieval/recovery must happen within

15\text{ minutes}

(RTO).

This establishes S3 Standard as the appropriate storage tier since Glacier Standard retrieval times (

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

) exceed the RTO, and S3 Standard provides sub-second latency.

Evaluate replication options to satisfy the regional disaster recovery constraint.

Amazon S3 Cross-Region Replication (CRR) should be configured to replicate archive data asynchronously to a secondary AWS Region.

CRR protects the data against a regional outage while maintaining the required

99.999999999\%

durability of the S3 storage class.

Select the correct disaster recovery (DR) pattern for the catalog application and database.

A Warm Standby DR pattern is chosen, keeping a minimal, active catalog search application running in the recovery Region.

A Pilot Light pattern keeps resources stopped, which introduces startup latency that cannot reliably guarantee a failover in under

15\text{ minutes}

Anahtar Kavram

Disaster recovery planning requires balancing the storage tier's data retrieval speed against the application's Recovery Time Objective (RTO). High durability demands cross-Region replication, while low RTO demands warm, active standby infrastructure.

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