mgh
cue the 'saving as .cwb corrupted my data' thread...
I have yet to see
any evidence that this is anything other than an urban legend. I've asked if anyone has saved as a bundle file, then opened it shortly thereafter and had corruption. No one has
ever reported experiencing that. The "corruption" is always in the context of "I have this bundle file from [x number] of years ago..."
People seem unwilling to accept that storage media can deteriorate over time. This is true of CD-ROMs, hard drives, flash drives...anything. Also many people don't realize that CD-Rs use a different technology than CD-ROMs and have both a shorter life and less stability, and that flash drives include redundancy because of issues with cell retention. The reason why this is crucial with bundle files is they are like .zip files; if just a few bits get lost then you lose the file.
I "refresh" backups of all my data periodically. I learned to do this the hard way, when zip files couldn't be opened years later. The refreshing occurs to the "optical media
du jour." For example I copied data on CD-Rs to DVD-Rs when they became available, then to Blu-Ray. So not only is the data refreshed, I now have three sets of backups.