Restore the cluster to the new cluster subnet group
Choose the snapshot that you created, choose Restore from snapshot, and then choose Restore to provisioned cluster.
Configure the properties of the new cluster. By default, Amazon Redshift automatically selects the same properties as the source cluster. Be sure that these properties are different from the source cluster: Cluster identifierVirtual private cloud (VPC): the VPC that you want to migrate the cluster to
Associate the IAM roles
On the navigation pane, choose CLUSTERS, and then choose the new cluster.
Choose the Actions drop-down list, and then choose Manage IAM roles.
From Available IAM roles, choose the roles that are associated with the source cluster.
Choose Add IAM role, and then choose Done.
After the snapshot is restored and the new cluster status changes to Available, follow these steps:
Rename the old cluster (for example, "oldcluster-1").
Rename the new cluster to the original cluster name (for example, "cluster-1").
Resume write operations to the cluster from client applications.