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Since the index in OpenSearch is deleted after 3 months, you can’t query the data there to retrieve it. Based on that, I don’t think this question considers data older than 3 months as “infrequently accessed” – that data is not accessed at all since it is no longer indexed in OpenSearch and therefore should be sent to Glacier Deep Archive.
Standard data – < 1 week
Infrequently accessed data – 1 week to 3 months
Archived, never accessed data (since the index is no longer in OpenSearch) > 3 months
