The Split extension takes large files and splits them up into smaller files. Typically, it would be used in conjunction with the cback-span command.

The split up files are not difficult to work with. Simply find all of the files — which could be split between multiple discs — and concatenate them together.

root:/tmp# rm usr-src-software.tar.gz  # make sure it's not there
root:/tmp# cat usr-src-software.tar.gz_00001 >> usr-src-software.tar.gz
root:/tmp# cat usr-src-software.tar.gz_00002 >> usr-src-software.tar.gz
root:/tmp# cat usr-src-software.tar.gz_00003 >> usr-src-software.tar.gz
      

Then, use the resulting file like usual.

Remember, you need to have all of the files that the original large file was split into before this will work. If you are missing a file, the result of the concatenation step will be either a corrupt file or a truncated file (depending on which chunks you did not include).