When I originally uploaded my files in photo station, I used the web interface.
When I did this, photo station only allowed me to upload 105 files, and just ignored the rest,
I suspect some metadata must have gotten corrupted.
Now I'm trying to create a photo folder for each user that is in the 'user' group and set permissions to the folder so that the user would be able to access it from the file explorer or the synology photo station interface.
The free software ImageMagick is used by the Synology Diskstation to handle images and thumbnails.The Synology DMS 4.2 system (and later) create several thumbnails for each photo or video uploaded in the Photostation (shared system folder photo). These thumbnails are saved in a hidden folder named @eaDir, created in each album folder. Subfolders with the name of the photo or video, including the extension, are created inside the @eaDir folder. Such a subfolder contains the following thumbnails :
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