A company currently is hosting a Redshift cluster. There is a requirement for the data to be available in the Redshift cluster in another region as part of the company`s disaster recovery setup. How would you achieve this?
 

Answer options:

A.Use the Elastic Beanstalk service to copy the cluster to another region.
B.Use Cloudformation templates to copy the cluster to another region.
C.Configure cross-region snapshots for the underlying Redshift cluster.
D.Use the snapshots stored in S3 to create a new Redshift cluster in another region.

Answer - C
You can configure Amazon Redshift to automatically copy snapshots (automated or manual) for a cluster to another region. When a snapshot is created in the cluster’s primary region, it will be copied to a secondary region known as the source region and destination region. By storing a copy of your snapshots in another region, you have the ability to restore your cluster from recent data if anything affects the primary.
Snapshots are point-in-time backups of a cluster. There are two types of snapshots: automated and manual. Amazon Redshift stores these snapshots internally in Amazon S3 using an encrypted Secure Sockets Layer (SSL) connection.
Amazon Redshift automatically takes incremental snapshots that track changes to the cluster since the previous automated snapshot. Automated snapshots retain all of the data required to restore a cluster from a snapshot. You can create a snapshot schedule to control when automated snapshots are taken, or you can take a manual snapshot at any time.
When you restore from a snapshot, Amazon Redshift creates a new cluster and makes the new cluster available before all of the data is loaded, so you can begin querying the new cluster immediately. The cluster streams data on demand from the snapshot in response to active queries then loads the remaining data in the background.
https://aws.amazon.com/blogs/aws/automated-cross-region-snapshot-copy-for-amazon-redshift/
Option A is invalid since AWS Elastic Beanstalk is an easy-to-use service for deploying and scaling web applications and is not used to copy snapshots for disaster recovery.
Option B is invalid since the CloudFormation template can help create clusters. But it won’t help in disaster recovery.
To check how to create Cluster using CloudFormation, refer below URL-
https://aws.amazon.com/blogs/big-data/automate-amazon-redshift-cluster-creation-using-aws-cloudformation/
Option D is invalid since it will be a manual process.
For more information on working with snapshots, please refer to the below URL-
https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html