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Is there any application to synchronize backup with check of audio int
post Feb 1 2013, 17:23
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Setup: Working drive S: (“source”), backup drive T: (“target”), in Windows lingo. S:\ArtistYearAlbum\Track01.flac has been modified since last backup – I have been correcting the metadata.

Now the audio is the same on the backup – except if there is corruption, and obviously I do not want to overwrite my backup with corrupted audio even if I have changed metadata. So I want a piece of software which roughly does as follows:
(1) Notice that the file on S: is newer than the one on T:
(2) Check whether they have the same audio. (If not, skip – I will have a look at those later.)
(3) Only then, copy. Could even be done by merely transferring only metadata from S:\ArtistYearAlbum\Track01.flac to T:\ArtistYearAlbum\Track01.flac , not overwriting audio.
((4) Optionally: verify again that the audio matches.)

Ideally I would like to have a library function that keeps track of my files even if they are renamed (shouldn't be hard for a format which is audio-checksummed), but I would be surprised if that exists ... yet.
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post Feb 1 2013, 17:44
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While it would probably be possible to make a script to do this for you, the far easier solution is to just do backups that don't overwrite previous versions. In fact, what you are doing now isn't a true backup, it's just a mirror. There are lots of programs that can do this for you automatically. Or even just using shadow copies to keep old versions would work, but it's less reliable.

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