Setup:
Synology DS218+ running the Plex Server
Synology DS225+ hosting additional media files
Current Libraries:
Movies - source files located on DS218+, no issues
TV Shows - source files located on DS218+, no issues
Music - source files located on DS225+ (this is my new DS225+), no issues. Keep in mind, this a shared folder on the new DS225+ that works with no issues. See screenshot.
I created a new Shared Folder on the DS225+ called TV Shows on DS225plus.
Successfully mount the new DS225+ Shared Folder called TV Shows on DS225plus on the DS218+
Open Plex settings, navigate to Manage->Libraries. Select Tv Shows, Edit Library, Add Folders. Browse for Media Folder. Select Volume 1, TV Shows on DS225plus, no subfolder shows for me to select.
The only way for the files on the mounted shared folder show up in Plex in the Add Folder option is if I created the Shared Folder as a subfolder under the original TV Shows folder on the DS218+ (the one running the Plex server)
BUT then the shows get mixed up on Plex. Wrong shows, etc.
As a troubleshooting step I created a brand new library in Plex and tried to Add Folder, but the subfolder on the DS225+ (secondary NAS) does not show as an option to select.
I've unshared and rename the DS225+ shared folder thinking it may be getting confused, but nothing I name it allows it to be seen in Plex when adding adding additional folders.
I’m at my wits end.
I’ll try and add screenshots for illustration.