Consider choosing RA3 node types in these cases: You need the flexibility to scale and pay for compute separate from storage. You query a fraction of your total data. Your data volume is growing rapidly or is expected to grow rapidly. You want the flexibility to size the cluster based only on your performance needs. As the scale of data continues to grow, reaching petabytes, the amount of data you ingest into your Amazon Redshift data warehouse is also growing. You might be looking for ways to cost-effectively analyze all your data. With new Amazon Redshift RA3 instances with managed storage, you can choose the number of nodes based on your performance requirements, and pay only for the managed storage that you use. This gives you the flexibility to size your RA3 cluster based on the amount of data you process daily without increasing your storage costs. Built on the AWS Nitro System, RA3 instances with managed storage use high performance SSDs for your hot data and Amazon S3 for your cold data, providing ease of use, cost-effective storage, and fast query performance.