
AWS introduces Reindexing-from-Snapshot (RFS), a high-performance migration mechanism that allows organizations to transfer OpenSearch and Elasticsearch data across multiple versions with minimal performance impact and high throughput.


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<p>
AWS has introduced a new mechanism called Reindexing-from-Snapshot (RFS) to simplify migration to Amazon OpenSearch Service. This method addresses critical concerns for production workload migrations.
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<li>Minimizes performance impact on source clusters by using snapshots for migration</li>
<li>Enables high-throughput data transfer by processing shards in parallel</li>
<li>Supports multi-version upgrades across major OpenSearch/Elasticsearch versions</li>
<li>Can migrate large datasets quickly (5 TiB in approximately 35 minutes)</li>
<li>Preserves original document identifiers during migration</li>
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RFS is part of the Migration Assistant solution, offering a straightforward, cost-effective approach to migrating OpenSearch and Elasticsearch clusters to Amazon OpenSearch Service.
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