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Data Compression and Fast Data Transfer?

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The Question is:

We have approximately 50 large files on Alpha VMS that need to be FTPed as
 quickly as possible when they change.  However, their sizes are large -
 anywhere from 150,000 blocks to 25,000,000 blocks.  I am trying to find
 compression software that can reduce
 the file sizes more quickly than I can FTP the files.

The Answer is :

  The bzip, Info-ZIP and gzip compression tools are available on the
  OpenVMS Freeware.  Alternative approaches include tracking and
  transfering only the data differences, and not (unnecessarily)
  transfering any unchanged data -- various techniques used to encode
  video data could be of interest, too.  The use of the fastest available
  datalinks will have already been considered here, of course.

answer written or last revised on ( 4-OCT-2001 )

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