Amazon Elasticsearch Service now supports up to 100 nodes and 150 TB storage capacity per domain
Amazon Elasticsearch Service has increased the maximum number of instances supported in a single domain to 100, which increases the maximum storage capacity per domain to 150 TB on select instance types. This allows you to store and analyze up to five times more data for large analytic workloads and to horizontally scale search applications to meet the most demanding performance needs. To request an increase beyond the default per domain limit of 20 instances, simply submit a service limit increase request.
Amazon Elasticsearch Service is a fully managed service that delivers Elasticsearch’s easy-to-use APIs and real-time capabilities along with the availability, scalability, and security required by production workloads. For more information about Amazon Elasticsearch Service and its uses, see the Developer Guide and Getting Started page.