s3Backup Mode
Parameters
value
Defines how documents should be delivered to Amazon S3. When set to FailedEventsOnly , Firehose writes any data that could not be indexed to the configured Amazon S3 destination. When set to AllEvents , Firehose delivers all incoming records to Amazon S3, and also writes failed documents to Amazon S3. The default value is FailedEventsOnly . You can update this backup mode from FailedEventsOnly to AllEvents . You can't update it from AllEvents to FailedEventsOnly .