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Defragmentation corrupted my image files RRS feed

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    I have geotagged some 2000+  jpg image files. Quite a lot of the files were heavily defragmented, 40 - 70 fragments per file. I bought and installed PerfectDisk 2008 for WHS. After the first defragmentation run, I discovered that the Longitude reference in the Exif GPS data (ie East / West reference) were missing.  


    I suspect that PerfectDisk have caused the problems to the Exif GPS data:

    -          I have geotagged more than 2000 images before I installed PerfectDisk on my WHS.
    -         I have been working for several months with different types of photo software without any problems before installing PerfectDisk.

    -          After I ran PerfectDisk, all longitude data were missing on my 2000 + images (ie not displayed since the East/West reference was missing)

    -          I uninstalled PerfectDisk and retagged the images with proper East/West reference.

    -          After uninstalling PerfectDisk I have geotagged several images and not had any problems with missing Exif data.


    Some of the photo tools I'm using are causing heavy defragmentation of my image files, therefore I need to defragment my WHS. I have now installed Diskeeper 2009 and this defragmenter is working without causing any problems to my files.

    Anybody else that have experienced problems with defragmentation of WHS files?

    Monday, December 29, 2008 9:15 AM

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    You probably should talk to the PerfectDisk guys about this one.  If their program is causing these types of issues, they should probably be told.
    athlon 3400, 2gb ram, 9 drives totaling about 3.5 tbs.
    • Proposed as answer by Lara JonesModerator Monday, December 29, 2008 10:09 PM
    • Marked as answer by jostrav Tuesday, December 30, 2008 7:03 AM
    Monday, December 29, 2008 3:09 PM

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    Hello,
    generally I do not recommend defragmentation tools on any server system. These are taking system ressources, and as you experienced may even cause trouble, which you wouldn't have without them. The main bottleneck for a server system is the network interface, so defragmenting doesn't bring a real performance increase in the very most cases.
    If fragmentation is really a problem, you could still copy off the files to another system, delete them from the network shares, wait for duplicated folders approximately one hour to ensure, that the duplicates also are removed and copy them back to the share. That way you would also get rid of fragmentation caused by applications.
    Best greetings from Germany
    Olaf
    Monday, December 29, 2008 10:35 AM
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    You probably should talk to the PerfectDisk guys about this one.  If their program is causing these types of issues, they should probably be told.
    athlon 3400, 2gb ram, 9 drives totaling about 3.5 tbs.
    • Proposed as answer by Lara JonesModerator Monday, December 29, 2008 10:09 PM
    • Marked as answer by jostrav Tuesday, December 30, 2008 7:03 AM
    Monday, December 29, 2008 3:09 PM
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    Yes, you are right - I have already told them.
    Monday, December 29, 2008 5:55 PM