OpenSearch’s vector engine adds support for UltraWarm on Amazon OpenSearch Service

UltraWarm is a fully managed, warm storage tier that’s designed to deliver cost savings on the Amazon OpenSearch Service. With OpenSearch 2.17+ domains, you can now store k-NN (vector) indexes on UltraWarm storage reducing the cost of serving infrequently access k-NN indexes through warm and cold storage tiers. With UltraWarm storage, you can further cost optimize vector search workloads on the OpenSearch vector engine. To learn more, refer to the [documentation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html).