Redshift Quiz
A company has a Redshift cluster for petabyte-scale data warehousing. The data within the cluster is easily reproducible from additional data stored on Amazon S3. The company wants to reduce the overall total cost of running this Redshift cluster. Which scenario would best meet the needs of the running cluster, while still reducing total overall ownership of the cluster? Choose the correct answer from the options below.
A. Instead of implementing automatic daily backups, write a CLI script that creates manualsnapshots every few days. Copy the manual snapshot to a secondary AWS regionfor disaster recovery situations.
B. Enable automated snapshots but set the retention period to a lower number to reducestorage costs.
C. Implement daily backups, but do not enable multi-region copy to save data transfer costs.
D. Disable automated and manual snapshots on the cluster.
D. Disable automated and manual snapshots on the cluster.
Snapshots are point-in-time backups of a cluster. There are two types of snapshots:automatedandmanual. Amazon Redshift stores these snapshots internally in Amazon S3 by 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.
Since the question already mentions that the cluster is easily reproducible from additional data stored on Amazon S3, you do not need to maintain snapshots.
For more information on Redshift Snapshots, please visit the below URL:
http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html
