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Hashing and file verification

B

Brian Stirling

Diamond Member
I have 700GB of digital images and another 465GB of digital video and have numerous external HD's as redundant backup of them, but how best to verify that there is no corrupt files? If the master HD get's corrupted and you back it up to the other drives you wind up replicating the corruption and that's not good.

So, what's the best way to scan a folder or drive for corrupt files? The thing is, I have in excess of 50,000 images so going through each one on all my HD's would be so painful not even Dick Cheney would be in favor so there's got to be some automated way to verify if an image file is corrupt. I should mention that most of the image files are in RAW format but that there are about 6 different cameras as well as images scanned in from slides.

Any help?


Brian
 
MultiPAR is good in that case. Also a proggy with comparison by content/checksum such as FreeFileSync may be useful too.
 
There are many software that can do folder to folder or file to file comparison, they use hashes to check each file and see if it matches or not.

Google "folder compare" , "folder sync" , ..etc
 
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