S3 Replication: Data Redundancy and Disaster Recovery
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Questions and Answers

A company has enabled cross-region replication (CRR) on an S3 bucket. What must be enabled on both the source and destination buckets for CRR to function correctly?

  • Static Website Hosting
  • Object-level Logging
  • Versioning (correct)
  • Server Access Logging

An organization wants to implement S3 Cross-Region Replication (CRR) to minimize latency for its global user base. Which of the following strategies would BEST achieve this goal?

  • Replicating all data to a single bucket in the region with the lowest storage costs.
  • Replicating only infrequently accessed archive data to a bucket in a different region.
  • Replicating data to buckets in regions closest to the users who frequently access it. (correct)
  • Disabling versioning on the destination bucket to reduce storage usage.

A company is using S3 Cross-Region Replication (CRR) for disaster recovery. If an object is deleted from the source bucket, what is the DEFAULT behavior regarding the replicated object in the destination bucket?

  • The object in the destination bucket remains unchanged. (correct)
  • The object in the destination bucket transitions to the Glacier storage class.
  • The object in the destination bucket is archived to a separate log bucket.
  • The object in the destination bucket is automatically deleted.

An organization is configuring S3 Cross-Region Replication (CRR) for a critical dataset. Which of the following factors should be MOST important when determining which data to replicate?

<p>The frequency with which data is accessed by users in different regions. (C)</p> Signup and view all the answers

A company has enabled Cross-Region Replication (CRR) between two S3 buckets. If a new object is added directly to the destination bucket, what will happen to the source bucket?

<p>The object will not be replicated to the source bucket. (A)</p> Signup and view all the answers

Flashcards

S3 Cross-Region Replication

Copying data automatically from one S3 bucket to another in a different AWS Region.

Benefits of S3 Replication

Safeguarding data in case of outages, and reducing data access times for users in different regions.

Costs of S3 Replication

Storage and data transfer costs, as well as management overhead.

Selective Replication

The process of identifying what is critical to replicate based on importance, access, and compliance.

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S3 Replication Requirement

Versioning must be enabled on both source and destination S3 buckets.

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Study Notes

  • S3 Replication replicates data from a source bucket to a destination bucket in another region.

Benefits

  • Safeguards critical data in case of outages or disruptions for disaster recovery.
  • Provides additional redundancy, ensuring data availability.
  • Reduces data access times for users in different regions.
  • Improves user experience by placing data closer to users, reducing latency.

Additional Costs and Considerations

  • Cross-region replication incurs additional storage costs.
  • Additional data transfer costs are incurred when moving data across regions.

Selective Replication

  • Involves identifying critical data for disaster recovery.
  • Suitable for applications with quick response time requirements.
  • Replicates data frequently accessed by users in different regions.

Criteria for Replication

  • Criticality of data.
  • Data access patterns.
  • Availability requirements.
  • Compliance and regulatory requirements.

Implementation in AWS

  • Requires setting up replication rules and policies in the source bucket.
  • New objects added to the source bucket are automatically replicated based on configured rules.
  • Replication occurs only when adding files to the source bucket, not vice versa.
  • By default, deletion in the source bucket does not delete the object in the destination bucket.
  • Versioning must be enabled in both the source and destination buckets for replication to work.
  • Cross Region Replication can be implemented in AWS via S3 bucket > Management > Replication rules.

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Description

S3 Replication duplicates data to another region for redundancy and availability. Selective replication identifies critical data based on access patterns and compliance requirements. It also considers the additional costs and data transfer when moving data across regions.

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