A computer-readable medium storing thereon computer-readable instructions for modifying a data stream of backup data to be provided to a fixed length fixed position delta reduction backup method, comprising:
- instructions for receiving the data stream;
- instructions for parsing the data stream into a plurality of logical components, at least one of the plurality of logical components including one or more data blocks;
- instructions for detecting missing data blocks in the plurality of logical components;
- and
- instructions for inserting a temporary data block where each missing data block has been detected in each of the plurality of logical components, thereby generating one or more modified data streams.