Redshift Quiz
A company has a Redshift Cluster defined in AWS. The IT Operations team have ensured that both automated and manual snapshots are in place. Since the cluster is going to be run for a long duration of a couple of years, Reserved Instances have been purchased. There has been a recent concern on the cost being incurred by the cluster. Which of the following steps can be carried out to minimize the costs being incurred by the cluster?
A. Delete the manual snapshots.
B. Set the retention period of the automated snapshots to 35 days.
C. Choose to use Spot Instances instead of Reserved Instances.
D. Choose to use Instance store volumes to store the cluster data.
A. Delete the manual snapshots.
AWS Documentation mentions the following:
Regardless of whether you enable automated snapshots, you can take a manual snapshot whenever you want. Amazon Redshift will never automatically delete a manual snapshot. Manual snapshots are retained even after you delete your cluster.
Because manual snapshots accrue storage charges, it’s important that you manually delete them if you no longer need them.
Automated snapshots are automatically deleted within the period of 1(Least) to 35(Max) days(Based on the retention period settings). So we have to take care of the Manual snapshots instead of Automated snapshots. Amazon Redshift never deletes Manual snaphots automatically, like how it does for Automatic Snapshots.
For more information on working with Snapshots, please visit the following URL:
https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html
