Previously, volume increases above 3 TiB required blue/green deployments; this update allows seamless in-place scaling for all volume sizes after the initial increase beyond 3 TiB. This enables faster, less complex storage expansion for search clusters handling large datasets.
Though volume decreases and frequent size changes still require blue/green deployments, administrators can use a dry-run option to determine deployment needs. The feature is available across all commercial and GovCloud AWS regions where OpenSearch Service operates, facilitating easier management of storage scalability.
Source & further reading
Amazon OpenSearch Service now supports in-place volume increases for all volume sizes ↗Source published 2026-03-10. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.