Lightroom NAS / network storage issues: dropped files, errors moving files, corrupted files.

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  • Updated 5 years ago
Files dropped when transferring Lightroom images to NAS and corrupted files on NAS.

I recently purchased a QNAP TS-469L NAS to store my Lightroom library. The catalog file is not stored on the NAS, only the image files. When I transferred the files to the NAS using Lightroom, I did not have any error messages, but after the transfer was complete, I found that about 10% of the images were missing. They no longer existed at the source and had not been written at the destination. This translated to about 10,000 missing images in various file formats (.CR2, .tif and .jpg). Most of the missing files were large .tif files in folders with lots of files. Several folders had ~ 1000 large .tif files, and often 1/2 or 2/3 of these images would be missing after the transfer. Fortunately, I had a third backup which wasn't involved in this transfer and I was able to manually replace most of the missing images across two full days of work (it took two days since I had to specify each folder with missing images individually in the backup location; despite the fact that the file structure was the same in my library and backup, I couldn't have Lightroom look for all of the missing images at once - it could apparently only check for missing images within a single source folder). After all that work, I still have ~ 500 images which weren't on the third backup drive and I seem to have lost forever.

I do also sometimes receive an error message when using Lightroom to move files on the NAS. If I try to move files from one folder on the NAS to another, sometimes ~ 5% of the files will give me an error message that they couldn't be moved on the first attempt. When I try to move just these files on a second attempt, it always works with no problems and I never lose these files (with an internal transfer on the NAS).

Within the images that did transfer to the NAS, I have had an intermittent problem with corrupted .tif files. I haven't been able to replicate this reliably but it seems that when I attempt to sync metadata changes across multiple .tif images in Lightroom (the images are stored on the NAS), some of the .tif files become corrupted. Although they retain their full file size on disk, the files cannot be opened or edited in either Photoshop or Lightroom and seem to be unrecoverable.

I am running Lightroom version 5.3 on Mac OS 10.9 [2]. The NAS was accessed via an AFP connection, with both the computer and the NAS hardwired (ethernet connected) to an Airport Extreme Base Station. Under catalog settings / metadata, I had Lightroom set to automatically write changes into xmp files - maybe this contributed to my problem with corrupted .tif files?

It seems that Lightroom still has problems storing and moving files over a network connection. I would be interested in hearing about any temporary / workaround solutions.
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Eric Scott

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Posted 5 years ago

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Eric Scott

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I did also find an older (Dec 2011) Adobe forum post with the same problem, but no solution: http://forums.adobe.com/message/4110842