Amazon Redshift RA3 clusters and Amazon Redshift Serverless use Redshift Managed Storage, which always has the latest copy of the data available. DS2 and DC2 clusters mirror the data on the cluster to ensure the latest copy is available in the event of a failure. Backups are automatically created on all Redshift cluster types and retained for 24 hours, and on serverless recovery points are provided for the past 24 hours. You can also create your own backups that can be retained indefinitely. These backups can be created at any time, and the Amazon Redshift automated backups or Amazon Redshift Serverless recovery points can be converted into a user backup for longer retention. Amazon Redshift can also asynchronously replicate your snapshots or recovery points to Amazon S3 in another Region for disaster recovery. On a DS2 or DC2 cluster, free backup storage is limited to the total size of storage on the nodes in the data warehouse cluster and only applies to active data warehouse clusters. For example, if you have total data warehouse storage of 8 TB, we will provide at most 8 TB of backup storage at no additional charge. If you would like to extend your backup retention period beyond one day, you can do so using the AWS Management Console or the Amazon Redshift APIs. For more information on automated snapshots, please refer to the Amazon Redshift Management Guide. Amazon Redshift only backs up data that has changed, so most snapshots use only a small amount of your free backup storage. When you need to restore a backup, you have access to all the automated backups within your backup retention window. Once you choose a backup from which to restore, we will provision a new data warehouse cluster and restore your data to it.