Related to "Internals"
InfluxDB Cloud Serverless data durability
InfluxDB Cloud Serverless replicates all time series data in the storage tier across multiple availability zones within a cloud region and automatically creates backups that can be used to restore data in the event of a node failure or data corruption.
Data retention in InfluxDB Cloud Serverless
InfluxDB Cloud Serverless enforces bucket retention periods at query time and, to optimize storage, routinely deletes Parquet files containing only expired data.