Best Option for Disaster Recovery of Redshift Cluster
Question
A company is currently utilizing a Redshift cluster as its production warehouse.
As a cloud architect, you are tasked to ensure that disaster recovery is in place.
Which would be the best option in addressing this issue?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer - B.
The below diagram shows that snapshots are available for Redshift clusters enabling them to be available in different regions.
For more information on managing Redshift Snapshots, please visit the following URL-
https://docs.aws.amazon.com/redshift/latest/mgmt/managing-snapshots-console.html![Configure Cross-Region Snapshots
You can configure cross-regional snapshots when you want Amazon Redshift to
‘automatically copy snapshots (automated or manual) to another region for backup
purposes. Note that copying snapshots from the source region to a destination region
incurs data transfer charges.
Enable Cross-Region Snapshots @ Yes © No
Destination Region* us-east-1
Retention Period 1 [=] @
| save contiguraton Ea](https://eaeastus2.blob.core.windows.net/optimizedimages/static/images/AWS-Certified-Solutions-Architect-Associate/answer/imgquestions_w4d4rq.png)
To ensure disaster recovery for a production Redshift cluster, enabling cross-region snapshots would be the best option.
Option A, taking a copy of the underlying EBS volumes to S3 and then doing cross-region replication, could be a viable option, but it is not as efficient as using cross-region snapshots. This approach requires more manual work and has a higher risk of data loss or corruption during the transfer.
Option C, creating a CloudFormation template to restore the cluster in another region, would provide a way to recover the Redshift cluster in the event of a disaster, but it would require a longer recovery time as it involves rebuilding the entire infrastructure from scratch.
Option D, enabling cross-availability zone snapshots for the Redshift cluster, is not a good option for disaster recovery because the snapshots would be stored in the same region as the cluster, and thus would not protect against a region-wide outage.
Therefore, the best option for disaster recovery is to enable cross-region snapshots for the Redshift cluster. Cross-region snapshots provide a point-in-time copy of the cluster, including all data, metadata, and configuration settings, and store them in a different region than the production cluster. This approach allows for quick and efficient recovery of the cluster in the event of a disaster, minimizing the impact on the business.