![]() ![]() You can resize your RA3 cluster at anytime by using elastic resize to add or remove compute capacity. You keep the two clusters running in parallel to evaluate the compute needs of your application. You use a recent snapshot of your Amazon Redshift DS2 or DC2 cluster to create a new cluster based on ra3.4xlarge instances. If you have a DS2 or DC2 instance-based cluster you create a new RA3 cluster to evaluate the new instance with managed storage. (Screenshot taken from Europe (Ireland) console, the price may slightly vary from one region to the other) I click Create Cluster and choose ra3.4xlarge instances. To create a new cluster, I am using the Amazon Redshift AWS Management Console or AWS Command Line Interface (AWS CLI). The differences between ra3.16xlarge and ra3.4xlarge nodes are summarized in the table below. A cluster can contain up to 32 of these instances, for a total storage of 2048 TB (that’s 2 petabytes!). The new ra3.4xlarge node provides 12 vCPUs, 96 GiB of RAM, and addresses up to 64 Tb of managed storage. This made maintaining the operational analytics data set and the larger historical dataset difficult to query when needed. In the past, there was pressure to offload or archive old data to other storage because of fixed storage limits. RA3 nodes with managed storage are a great fit for analytics workloads that require massive storage capacity and can be a great fit for workloads such as operational analytics, where the subset of data that is most important evolves constantly over time. Amazon Redshift managed storage uses advanced techniques such as block temperature, data block age, and workload patterns to optimize performance. Amazon Redshift managed storage automatically manages data placement across tiers of storage and caches the hottest data in high-performance SSD storage while automatically offloading colder data to Amazon Simple Storage Service (Amazon S3). The RA3 node type is based on AWS Nitro and includes support for Amazon Redshift managed storage. Today we are adding a new smaller member to the RA3 family: the ra3.4xlarge. The first member of the RA3 family was the ra3.16xlarge which we heard from many customers was fantastic, but more than they needed for their workload needs. The new RA3 nodes let you determine how much compute capacity you need to support your workload and then scale the amount of storage based on your needs. Previous generation DS2 and DC2 nodes had a fixed amount of storage and required adding more nodes to your cluster to increase storage capacity. We are always listening to your feedback and, in December last year, we announced our 3rd generation RA3 node type providing you the ability to scale compute and storage separately. Since we launched Amazon Redshift as a cloud data warehouse service more than seven years ago, tens of thousands of customers built their workloads using it. ![]()
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