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Target customers: all users. Features released: Some data that is stored in the OSS-HDFS service does not need to be frequently accessed, but the data still needs to be retained due to data compliance or data archiving requirements. To meet these requirements, the OSS-HDFS service provides the automatic storage tiering feature. This feature can be used to categorize frequently accessed data into the Standard storage class and rarely accessed data into the IA, Archive, or Cold Archive storage class. This helps you reduce the total storage costs.