System and method for mainframe computers backup and restore on object storage systems

A computer-implemented method comprising:

• receiving a request to restore a data set from an object storage, to a mainframe;
• querying a database stored in a storage device of the mainframe to retrieve an object name of a mapping object associated with the data set;
• reading the mapping object from the object storage;
• invoking data facility data set services (DFDSS);
• for each chunk from the chunks described in the mapping objects, the chunk stored in the object storage as an object,
• requesting and receiving, by the mainframe, the chunk from the object storage using object storage API, each chunk having a sequence number;
• and
• restoring the data set from the chunks in accordance with the sequence number.

A system for backup and restore mainframe data on a backup server, comprising:

• a processor, the processor being adapted to perform a first set of steps comprising:
• receiving a request for backing up a data set from a mainframe onto an object storage;
• splitting the data set into a multiplicity of chunks, each chunk of the multiplicity of chunks having a predetermined size;
• creating a mapping object;
• repeating for each chunk:
• allocating a sender thread to the chunk;
• transmitting by the sender thread using an object storage Application programming interface (API), the chunk having the predetermined size as an object, to the object storage, to be stored as an object;
• and
• updating the mapping object with details of the chunk;
• subject to the data set being fully split and no more chunks to be transmitted, transmitting the mapping object to the object storage by the sender thread;
• and
• write an identifier of the data set and meta data including an object name of the mapping object, to a database stored in a storage device of the mainframe.

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:

• performing a backup operation, comprising:
• receiving a request for backing up a data set from a mainframe onto an object storage;
• splitting the data set into a multiplicity of chunks, each chunk of the multiplicity of chunks having a predetermined size;
• creating a mapping object;
• repeating for each chunk:
• allocating a sender thread to the chunk;
• transmitting by the sender thread using an object storage Application programming interface (API), the chunk having the predetermined size as an object, to the object storage, to be stored as an object;
• and
• updating the mapping object with details of the chunk;
• subject to the data set being fully split and no more chunks to be transmitted, transmitting the mapping object to the object storage by the sender thread;
• and
• writing an identifier of the data set and meta data including an object name of the mapping object, to a database stored in a storage device of the mainframe;
• and
• performing a restore operation, comprising:
• receiving a request to restore a data set from an object storage, to a mainframe;
• querying the database to retrieve the object name of a mapping object associated with the data set;
• reading the mapping object from the object storage;
• invoking data facility data set services (DFDSS);
• for each chunk from the chunks described in the mapping objects,
• requesting and receiving a chunk from the object storage using object storage API, each chunk having a sequence number;
• and
• restoring the data set from the chunks in accordance with the sequence number.