US Patent 11481286 Storage based file FTP

Transferring files directly from a storage system to a backup storage system includes determining identifiers for blocks on the storage system that correspond to files that are to be backed up, providing the identifiers for the blocks to the storage system, and the storage system pushing the blocks indicated by the identifiers directly from the storage system to the backup storage system. The identifiers may be logical block addresses. Determining the logical block addresses may vary according to a file system for files that are to be backed up. Determining the logical block address may include determining an inode value for each of the files that are to be backed up or may include determining a logical cluster number for each of the files that are to be backed up. The backup storage system may include a media server and a storage device.