Data Recovery Software Smartpar, lost files etc.

Here's what the creator says about it:
PAR files use Reed-Solomon error correction codes to create redundant data. In the case of loss or corruption of data in the original data files, the data may be reconstructed from the PAR files. The goal of PAR files is to be able to allow data recovery without requiring excess redundancy. A great feature of PAR files is the versatility of the files. In many ways, PAR files are "chameleon" files with the ability to reconstruct any one of the missing files. Whether part 1 or part 71 is missing, as long as you have as many PAR files as missing files, the data can be reconstructed.

This is useful in the distribution of large binaries over usenet. It has become standard practice to divide large binaries into smaller pieces, so that missing or corrupt article will only require the repost of the smaller piece instead of the whole binary. Many of the methods used are RAR, ACE, or several splitter programs.

PAR files supplement these pieces. By distributing PAR files in addition to the original binaries, missing or corrupt files may be reconstructed as long as there are as many (or more) PAR files as missing/corrupt files. For example, if the original set consists of 100 files and you're missing 9, if you have 9 or more PAR files, the missing files can be reconstructed from the PAR files. However, if you have 8 or fewer PAR files, none of the missing files can be recovered.

We'll have more on this later, so you're welcome to come back here.

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