So I've just setup another Unraid box for my partner and have run into various issues I never remember having with my other builds.  Right now I've run into an issue where the created Shares are limited in size to the size of the Cache Drive.  

The box has 5 - WD 4TB HDDs in it setup with 1 in Parity and the other 4 are the Array.  There is also a 500GB NVMe SSD for Caching. All of the shares are set to "All" for the disks they have access to, and Cache set to either "Prefer" or "Yes".  The "Media Library" one was stuck at the Cache size as well, I changed the Cache configuration of it, and wrote some data to it.  That is all I did and it now sees the full 16TB of space it should be seeing. 

Am I missing something?  Is it because the shares are largely empty (or darn near it)? Will this iron out over time?  When I look at them via Windows Explorer or Mac Finder they show as only 500GB of Free space (or however much space is on the Cache drive at the time). 

Screenshots to show that the settings are the same between the Media Library and the "Ruby's Vault" Share but they show different spaces.

 

I think when they have files on the array those disks will be included in the calculation. No practical difficulty caused by this.

 

Not related, but you need to set Minimum Free for each of your shares to larger than the largest file you expect to write to the share, and set Minimum Free for each pool (such as cache) to larger than the largest file you expect to write to the pool.

That’s kind of what I figured. Just didn’t feel like moving stuff around just to prove the theory only to delete it after. 
 

Thanks, ill try and figure out some file sizes to set limits.