Information processing apparatus and method of processing information

An information processing apparatus comprising:

• a memory;
• and
• a processor coupled to the memory, the processor being configured to perform processing, the processing including:
• accessing blocks that have a fixed size provided such that, among a plurality of magnetic tapes that have a redundant configuration, reverse time of one of the magnetic tapes and read time of the other magnetic tapes are identical;
• inserting into each of the plurality of magnetic tapes a single first dummy block immediately after reversal of a first wrap;
• and
• inserting one or more second dummy blocks into each of the other magnetic tapes immediately before the reversal of the first wrap such that different numbers of the one or more second dummy blocks are inserted into the different other magnetic tapes and inserting into each of the other magnetic tapes immediately after the reversal of the first wrap one or more third dummy blocks a number of which is equal to a number of the one or more second dummy blocks in each of the other magnetic tapes.