A company is running a production load Redshift cluster for a client. The client has an RTO objective of one hour and an RPO of one day. While configuring the initial cluster, what configuration would best meet the client`s recovery needs for this specific Redshift cluster configuration? Choose the correct answer from the options below.

Answer options:

A.Enable automatic snapshots on the cluster in the production region FROM the disaster recovery region. So snapshots are available in the disaster recovery region and can be launched in the event of a disaster.
B.Enable automatic snapshots and configure automatic snapshot copy from the current production cluster to the disaster recovery region.
C.Enable automatic snapshots on a Redshift cluster. In the event of a disaster, a failover to the backup region is needed. Manually copy the snapshot from the primary region to the secondary region.
D.Create the cluster configuration and enable Redshift replication from the cluster running in the primary region to the cluster running in the secondary region. In the event of a disaster, change the DNS endpoint to the secondary cluster’s leader node.

Answer – B
Option A is incorrect because it copies the snapshot from the destination region (disaster recovery region).
Option B is CORRECT because it copies the snapshot from the source region (production) to the destination region (disaster recovery region).
Option C is incorrect because you do not need to copy the manual snapshots (as it is an overhead). Redshift copies the snapshot from source to destination region.
Option D is incorrect because Redshift replicates the data to another region using snapshots. Once the snapshot is copied from the source to the destination region, you need to restore the cluster from the snapshot and use its DSN.
More information on Amazon Redshift Snapshots
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. If you need to restore from a snapshot, Amazon Redshift creates a new cluster and imports data from the snapshot that you specify.
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 the active queries then loads the remaining data in the background.
Amazon Redshift periodically takes snapshots and tracks incremental changes to the cluster since the last snapshot. Amazon Redshift retains all of the data required to restore a cluster from a snapshot.
For more information on RedShift snapshots, please visit the below URL-
http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html