Patent ID: 7761766

Claim:
A method of modifying a data stream of backup data to be provided to a fixed length fixed position delta reduction backup method, comprising: receiving the data stream; 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; detecting missing data blocks in the plurality of logical components; 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; and providing the modified data streams to a fixed position delta reduction backup application; wherein the fixed position delta reduction backup application compares data blocks in the logical components of the modified data streams with data blocks of a previous version of the logical components; wherein the fixed position delta reduction backup application stores data blocks of the logical components of the modified data streams that are new or modified with respect to the corresponding data blocks of the previous version of the logical components.