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Zorluk: OrtaResilient and Highly Available Storage Infrastructure

A financial services company is hosting a transaction auditing application on Amazon EC2 instances distributed across three Availability Zones in a single AWS Region. The application requires a shared file system that can be accessed concurrently by all EC2 instances to read and write active audit files. The storage solution must be highly resilient within the Region. Additionally, the company requires a disaster recovery (DR) architecture for this shared storage in a secondary Region with a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 30 minutes. Which combination of storage configurations will meet these requirements? (Select TWO.)

  1. Use Amazon Elastic File System (Amazon EFS) with the Regional storage class to provide shared file storage within the primary Region.Cevap
  2. Configure Amazon EFS Replication to replicate the shared file system to a secondary AWS Region to meet the disaster recovery requirements.Cevap
  3. C
    Provision a multi-attach Amazon Elastic Block Store (Amazon EBS) io2 volume and attach it to all EC2 instances across the three Availability Zones.
  4. D
    Create an Amazon EFS One Zone storage class file system in the primary Region and configure cross-Region backups to Amazon S3 Glacier Flexible Retrieval in the secondary Region.
  5. E
    Deploy an Amazon RDS Multi-AZ DB Cluster with read replicas in the secondary Region and mount the database files as a shared drive.

Cevap

Use Amazon Elastic File System (Amazon EFS) with the Regional storage class, and configure Amazon EFS Replication to replicate the shared file system to a secondary AWS Region.
Using Amazon EFS with the Regional storage class ensures that files are stored redundantly across multiple Availability Zones, offering high resilience and allowing all EC2 instances to read and write concurrently. Setting up Amazon EFS Replication replicates data to a secondary Region automatically, meeting the 15-minute RPO and allowing access within the 30-minute RTO.

Adım Adım Çözüm

1
Determine the shared storage requirements within the primary Region.
Identify that the EC2 instances are distributed across three Availability Zones and require simultaneous read/write access to the same file system, directing the choice to Amazon EFS with the Regional storage class.
Amazon EFS Regional storage class provides concurrent access from multiple AZs and replicates data across them for high resilience.
2
Address the disaster recovery constraints for the secondary Region.
Evaluate replication mechanisms to achieve a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 30 minutes, selecting Amazon EFS Replication.
Amazon EFS Replication continuously replicates file system changes to a secondary Region automatically, maintaining low latency synchronization to support quick failover.

Anahtar Kavram

Designing highly available and resilient shared storage architectures using Amazon EFS Regional storage and cross-Region replication.
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Resilient and Highly Available Storage Infrastructure

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