Individual disks and pool show different other measurements inside Drivepool

[DOS76]

As you can see from this image it shows that there is 290 GB of Other (which will shrink as its measuring one last disk) but this disk has 638 GB and another is listed as having 850GB. What can be the cause of this discrepancy. (After finishing measuring it is listed at 195 GB of other)
 

[Jaga]

I usually refer to the link in Christopher's signature when I want to refresh myself on what the "other" data type is.  It varies with the number of files on the disk, the number of directories, the slack space (cluster efficiency), non-pooled files, etc.

[DOS76]

Yeah that doesn't really explain why there is less than there should be though as the 1st part states that its stuff on the disks in the pool so if the disk is showing it has 850GB of other than the total pool should be showing at least that amount if not more from stuff like the slack space. If it was listed higher than I would suppose it should be I might think that was the reason but with it being much less that just doesn't reason to me.

[Christopher (Drashna)]

That may be, but this is a hard to answer question.

If it's still measuring, then the best bet is to let it wait and finish, and then check the results.

If there is still a lot of other data, then it's a good idea to run something like WinDirStat or WizTree or the like.  That should break down where all the data is.

Also, if you have shadow copies stored on the drive, that will take up space but it will be hard to see. 

Also, if you're using deduplication, or using one of the drives for the CloudDrive cache, this can happen, as well. 

[DOS76]

I'm not sure if I'm being clear enough here and forgive me if I'm not but these aren't mystery files that I don't know where they are. The files are present on the individual drives in folders on the root of the drives I don't need to locate them. Drivepool is listing the same amount of other in the right hand pane that list all of your individual drives that the folders in question are in their properties. After the pool completes the measuring process it reads that it has 195GB of other in the pool yet I know I have 638GB and 850GB in a folder in the root of the two drives in question that is why I'm confused that the pool's statistics are off by around 1TB of data that I have outside of the pool.

[Christopher (Drashna)]

Ah, sorry, I missed that. 

To be clear, you mean that the pie chart on the left is showing much smaller "other" space than what the individual drives in the drive list is showing, correct? 

If so, then it sounds like something is definitely going wrong here.

If you could, update to the latest version:
http://dl.covecube.com/DrivePoolWindows/release/download/StableBit.DrivePool_2.2.2.934_x64_Release.exe
and remeasure.

If that doesn't help, then open a ticket at https://stablebit.com/Contact and then run the StableBit Troubleshooter.