Again for me, using a .zip archive to store the backup before sending to the backup storage allows me to generate the archive once and backup in multiple locations. Since this is all driven by a batch file, I don't need to worry about issues with the way the backup destination might munge the archive filename and the data inside the archive is somewhat protected from such munging. I won't bother mentioning the archive is often considerably smaller than the individual files combined filesize.
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