Amazon OpenSearch Serverless has added support for backup and restore. System will backup all collections/indexes in the account automatically every hour. The backups are retained for 14 days and available to restore indexes using APIs. The feature is automatically enabled and does not require users to configure.
Please refer to the AWS Regional Services List for more information about Amazon OpenSearch Service availability. To learn more about OpenSearch Serverless, see the documentation.
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Source: Amazon Web Services
