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Zorluk: Çok zorResilient and Highly Available Storage Infrastructure

A global financial analytics firm hosts a critical risk modeling application on-premises that generates massive datasets. The firm needs to migrate its storage backend to AWS. The architecture must store the generated datasets in a highly durable storage tier that is replicated to a secondary AWS region for disaster recovery (DR). The system must meet a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 10 minutes for accessing the DR datasets. The datasets must be immediately retrievable in the secondary region in the event of a primary region outage. Additionally, the on-premises application servers require low-latency, local cached access to the active datasets. Which storage architecture meets these requirements with the lowest recovery time and operational complexity?

  1. Deploy an Amazon S3 File Gateway on-premises to cache active datasets locally and store the primary data in an Amazon S3 bucket. Enable S3 Versioning and configure S3 Cross-Region Replication (CRR) with S3 Replication Time Control (S3 RTC) to a secondary region. In the destination bucket, use a lifecycle policy to transition objects immediately to the S3 Glacier Instant Retrieval storage class.Cevap
  2. B
    Deploy an AWS Storage Gateway Volume Gateway in cached volume mode on-premises. Configure volume snapshots to back up data to Amazon S3 in the primary region, and use S3 Cross-Region Replication to copy snapshots to the secondary region. Use an S3 Lifecycle policy to transition the replicated snapshots to the S3 Glacier Flexible Retrieval storage class, using Standard retrieval during a disaster.
  3. C
    Deploy an Amazon EFS File Gateway on-premises. Configure Amazon EFS Replication to copy data to a secondary region. Set up an Amazon RDS Multi-AZ DB instance in the primary region and create an RDS Read Replica in the secondary region, configuring the replica as the primary automatic failover target for database transaction records.
  4. D
    Deploy an Amazon S3 File Gateway on-premises. Configure S3 Same-Region Replication (SRR) in the primary region, and write a custom AWS Lambda function to copy objects to the secondary region's bucket. Set up the secondary region as a Pilot Light environment, relying on manual service activation to access the data during a failover event.

Cevap

Deploy an Amazon S3 File Gateway on-premises to cache active datasets locally and store the primary data in an Amazon S3 bucket. Enable S3 Versioning and configure S3 Cross-Region Replication (CRR) with S3 Replication Time Control (S3 RTC) to a secondary region. In the destination bucket, use a lifecycle policy to transition objects immediately to the S3 Glacier Instant Retrieval storage class.
The correct architecture uses Amazon S3 File Gateway to maintain an on-premises local cache for low-latency active file access while storing the primary copy in Amazon S3. To meet the 15-minute RPO, S3 Replication Time Control (S3 RTC) is enabled for Cross-Region Replication, which guarantees that 99.9% of objects are copied to the secondary region within 15 minutes. To meet the 10-minute RTO for the DR datasets, the destination bucket uses the S3 Glacier Instant Retrieval storage class, which provides millisecond retrieval speeds at lower storage costs.

Adım Adım Çözüm

1
Address the local low-latency requirement.
Amazon S3 File Gateway provides a local cache for frequently accessed files using standard file protocols (NFS/SMB) while using Amazon S3 as the backend.
This satisfies the requirement for on-premises servers to have low-latency cached access.
2
Select a replication mechanism that guarantees the 15-minute RPO.
S3 Cross-Region Replication (CRR) with S3 Replication Time Control (S3 RTC) is configured.
S3 RTC guarantees replication of 99.9% of objects within 15 minutes, meeting the 15-minute RPO with a backed SLA.
3
Ensure the disaster recovery storage class meets the 10-minute RTO cost-effectively.
Objects are transitioned to the S3 Glacier Instant Retrieval storage class in the secondary region.
S3 Glacier Instant Retrieval provides millisecond retrieval times (meeting the 10-minute RTO) for archived data, offering lower storage costs compared to S3 Standard.

Anahtar Kavram

Disaster recovery architectures using AWS Storage Gateway, S3 Replication Time Control (RTC), and high-availability storage classes.
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Resilient and Highly Available Storage Infrastructure

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