Identify any Amazon Redshift clusters that appear to be underutilized and downsize them to help lower the cost of your monthly AWS bill. By default, an AWS Redshift cluster is considered "underutilized" when matches the following criteria:
Downsizing underused AWS Redshift clusters to meet the capacity needs at the lowest cost represents an efficient strategy to reduce your monthly AWS costs. For example, resizing a ds2.xlarge Redshift cluster to a dc1.large cluster due to CPU and IOPS resources underuse, you can save roughly $440 per month (as of March 2017).
To identify any underused Redshift clusters provisioned within your AWS account, perform the following:
Option 1: Downsize (resize) the underused Redshift clusters provisioned within your AWS account. To resize any Amazon Redshift cluster that is currently running in "underutilized" mode, perform the following actions:
Option 2: Disable the rule check. If the selected underused Redshift cluster configuration must remain unchanged due to project implementation design, you should turn off the conformity rule check for the specified cluster from the Cloud Conformity console.