Wonko wrote:
I'm not aware of any tools that can 100% check for corruption inside the
mp3/flac/whatever files - if the tags got deleted somehow on the 'live'
disk then you could have a perfectly valid and readable but damaged
file.
erland's suggestion of using md5s should work well. The problem for me
comes when 'updating' the backup as I tend to make quite a few changes
such as tidying capitalisation of tags, adding album art, applying
replaygain, etc. - the difficulty is knowing whether I'm about to
overwrite my uncorrupted backup file with an updated corrupted one.
I happen to use syncback (freeware version) too - one of the things I
like about it is the preview of changes it is about to make after doing
the comparison of the master to the backup drive. I use the 'slower but
more reliable' file comparison mode (under 'compare options' in the
earlier version I use) and then carefully check the preview list. This
generates and compares hashes for the source and backup files, and so
should (a) check all files are readable and (b) detect any differences.
If you review the differences carefully for any unexpected changes it
could be a fairly safe scheme.
Even that scheme is somewhat risky. What if your tag editing tool
corrupts your music while writing the tags? Or the OS/Hard Disk is
unstable and messes up anythng (re)written. You'd end up with thrash
anyway. And you have to check your backup change lists every time... :(
I guess backup up all new files to DVD as well would be a wise
precaution in addition to any automatic backup/snapshot system.
Especially for real important stuff like pictures and movies. Problem
is, I'm too lazy... :(
Regards,
Peter
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