Testing File Integrity of millions of image files without opening each

Discussion in 'Photoshop Tutorials' started by Gurvinder, Mar 24, 2009.

  1. Gurvinder

    Gurvinder Guest


    A project that scans and digitizes manuscripts and documents has a
    collection upto 7 TB of images and growing.

    They would like to conduct annual disaster recovery by restoring their
    backups to hard drive and testing the integrity of images so see if
    they are not corrupted.

    Opening each one to check is not viable given the amount of images.

    Has anyone heard of a software/technique to test the integrity of the
    JPG,TIFF, PDF files.

    Any ideas would be highly appreciated.

    Gurvinder, Mar 24, 2009
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  2. The simplest way might be to store MD5 checksums for each of the files.

    If you then write down on a piece of paper the MD5 checksum for the file
    containing the MD5 checksums, you can use that to check the integrity of the
    checksums before checking the checksums of the actual files.

    And if a woodchuck could check checksums, how many... :)

    Andrew Morton, Mar 24, 2009
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