System and method for importing and exporting data between tapes to cloud storage

A computer program product comprising a computer readable storage medium retaining program instructions, which program instructions when read by a processor, cause the processor to perform a method comprising:

• from high level language code, receiving a request for reading a data set from a tape mounted on a MAINFRAME computer tape drive or virtual tape drive, wherein the request for reading the data set is a request to copy the data set onto an object storage connected over TCP/IP;
• from the high level language code running on the Mainframe operating system, allocating a data set on a tape comprising information to be imported, the allocation being in a format of the data set record as stored on the tape, and the allocation being associated with a Job File Control Block (JFCB), wherein the tape is mounted in Standard Label (SL) mode;
• updating the JFCB in the data structure to Bypass Label Processing (BLP) mode instead of the SL mode;
• reading VOL1 data from the tape;
• for each file of a plurality of files stored on the tape initiating by the high level language code:
• reading HDR1 of the file from the tape;
• reading HDR2 of the file from the tape;
• reading content of the file block-by-block;
• reading EOF1 of the file from the tape;
• and
• reading EOF2 of the file from the tape;
• and
• organizing the VOL1, HDR1, HDR2, content, EOF1 and EOF2 in the object storage;
• and
• closing the tape for further reading,
• wherein said reading is performed without setting a job class environment of the mainframe Job Entry Subsystem (JES) to BLP mode, and
• wherein said reading is performed without unmounting the tape after reading each file of the plurality of files.