Hello all. I am using a 1 TB SSD drive as my cache drive. My question is: Why is it that when I create a docker container or a VM it is written to both the /mnt/user/appdata and the /mnt/cache/appdata locations. I do not recall experiencing this in the past. Needless to say this is causing many error notifications like the one below:

Your time and assistance will be greatly appreciated. Peter

5 hours ago, peterbatah said:

/mnt/user/appdata and the /mnt/cache/appdata locations

This is the same, one is the user shares path, the other is the disk share.

/mnt/user is used for all User share paths and includes a consolidated view of files in a User Share whether they are on the array or any pool.

/mnt/cache is a physical device so only shows files that are on that specific device.

@JorgeB @itimpi Thank you both for chiming in. How do I free up space on the cache drive then. I read this:

In Unraid, a cache pool is a collection of one or more drives, typically SSDs or high-speed HDDs. These drives temporarily store data before it's moved to your main array. Using cache pools can significantly enhance write speeds, protect your data, and provide dedicated storage for specific tasks like running Docker containers or virtual machines.

Especially the part about temporarily storing data. Isn't the cached data supposed to be moved to the array as to free up space on the SSD cache drive?

Edited September 18, 2025Sep 18 by peterbatah
Added info

34 minutes ago, peterbatah said:

Isn't the cached data supposed to be moved to the array as to free up space on the SSD cache drive?

It will be moved as long as the shares are correctly configured to use it, i.e., there is a primary and secondary storage location set and the mover action is in the correct direction.

@JorgeB Can you direct me to documentation or a tutorial that will assist me in setting that up properly. I have been running UR for a while now and do not understand what may have changed.

https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/shares/

@JorgeB Why is it that I only see Primary storage (for new files and folders) in my share settings? I get the feeling that the files / folders on my cache drive are not being moved to the array.

Edited September 18, 2025Sep 18 by peterbatah

13 minutes ago, peterbatah said:

Why is it that I only see Primary storage (for new files and folders) in my share settings?

Because it's set to the array, see the link above:

@JorgeB Got it. Thank you so much for your help. I really appreciate it