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Target customers: customers from industries such as Internet service, IT service, Internet finance, new retail, online education, and large-scale manufacturing. These customers require POSIX-compliant file systems to store large amounts of hot and cold data at lower cost. Features released: 1.SMB file systems now support lifecycle management. Lifecycle management is supported by both NFS and SMB file systems. You can enable the lifecycle management feature for SMB file systems. 2.Lifecycle management now supports access to the files stored in an IA storage medium. You can use the NAS console or call the API to query and view the files that are stored in an IA storage medium. You can also view the storage space used by the files that are stored in an IA storage medium or the storage space of a General-purpose NAS file system. 3.Lifecycle management now supports file retrieval from an IA storage medium to the storage space of a General-purpose NAS file system. You can use the NAS console or call the API to retrieve files from an IA storage medium to the storage space of a General-purpose NAS file system at any time.(Note: When you retrieve files, you are charged for reading data from the files. After the files are retrieved, you are no longer charged when you read data from or write to the files.)