JBDragon1 wrote:
I'm using the program WinSCP to look at the NAS.

Not the best way to investigate ... use the Linux shell.

JBDragon1 wrote:
It's showing my Apps in /apps/
The MediaLibrary is in /apps/plexmediaserver/

As StephenB already mentioned - /apps/ does not reside on that root partition the warning email is about...

root@RN628X:/mnt# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md0 4190208 740096 3053888 20% / <<<<< this is what your warning e-mail is causing!!!!
...

/dev/md127 323185536 208920 319821608 1% /apps <<< this is where your Plex media library et all does reside. That's all fine.

...

(Don't worry about my device low capacity on my /dev/md127 - this is an all SSD system serving a specific applicaion.)

JBDragon1 wrote:
At the time when I had the Video Preview Files turned on in PLEX, it was eating up 130+ Gig's all by it's self. I keep getting the e-mail "System volume root's usage is 93%. This condition should not occur under normal conditions. Contact technical support."

Stephen already pointed to the sections residing on the root partition - these are the folders to investigate!

If your Plex library is 50 or 150 GB can't be relevant as this is outside of the root volume. Again, WinSCP does show a complete tree, easy to overview mounts and symlinks going past a volume...

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