elasticsearch-js/docs/reference/api/SlmRetention.md

Interface SlmRetention

Name	Type	Description
expire_after	Duration	Time period after which a snapshot is considered expired and eligible for deletion. SLM deletes expired snapshots based on the slm.retention_schedule.
max_count	integer	Maximum number of snapshots to retain, even if the snapshots have not yet expired. If the number of snapshots in the repository exceeds this limit, the policy retains the most recent snapshots and deletes older snapshots.
min_count	integer	Minimum number of snapshots to retain, even if the snapshots have expired.