EFFICIENT FILE COPYING BY ALLOCATION ON DESTINATION DISK OF DATA BLOCKS ONLY
Original Publication Date: 2000-Nov-01
Included in the Prior Art Database: 2004-Jan-16
Sony Technical Digest
This invention specifically addresses data file back up technology, and was developed for the DADR-5000. The novel function of the invention accomplishes intelligent file copying from a source media disk to a destination media disk by referencing the FAT of the source disk and only transferring to the destination disk blocks that contain data, thereby significantly increasing copy efficiency. As opposed to the present invention, prior art in the field copied the entire complement of data blocks on the source disk to the destination disk, even if such blocks were empty of data, resulting in much wasted time for very large files.