When I logged in to my unraid it showed that all of my drives had the same amount of space taken up except for one which was missing 3TB. My server is primarily used for Emby so without going back and looking through all the history of everything I have saved to it I have no real way of knowing what is missing. I'm just trying to figure out if there is any way I can recover it or if I have to go back and figure it out manually. Additionally the drive seems to be fine and shows no errors. I have recently upgraded to 7.2.6.

52 minutes ago, Chess035 said:

all of my drives had the same amount of space taken up

This would be unusual, unless all disks were the same size and all user shares were set to "most free", which is the least efficient allocation method.

54 minutes ago, Chess035 said:

except for one which was missing 3TB.

Are you sure it was missing, or did you just think it should have the same as the other disks?

Not enough information to know what might have happened.

Attach Diagnostics ZIP to your NEXT post in this thread.

All the drives are the same size (14TB) and are set up in most free. If this is the least efficient then I guess that means I didn't set it up properly. I'm not super techy so I do my best and filling them up evenly made sense to me for some reason. Additionally I know 3TB is missing because I had roughly 30TB total used before and now sitting around 27TB. I have attached the requested Doc.

tower-diagnostics-20260510-1140.zip

Other than appdata and system which is all on cache as they should be, you only have a single user share, which means you can't configure Unraid to manage different types of data differently. Simpler that way but less flexible.

Default allocation method is Highwater. It is a good compromise between using all drives eventually, without constantly switching between drives simply because one drive temporarily has more free than others. One of the features of Unraid is it allows individual drives that are not currently being used to spin down. But they can't spin down if it has to constantly switch drives for writing (and maybe even for reading since files that are stored at the same time are often read at the same time).

Nothing in diagnostics that gives a clue about any possible missing data. Syslog only goes back to last boot, and normal file I/O isn't logged anyway.

Do you allow access to your server from outside your LAN?

Would it be better to have separate shares?

I have Emby, Minecraft and a team speak that are accessible via potty forwarding. Could something have gotten through?

2 hours ago, Chess035 said:

Would it be better to have separate shares?

There can be some advantages with managing different types of files differently. For example, movie files will typically be larger than music files, so a share for movies would have a larger Minimum Free setting than a share for music. TV files will often have multiple episodes and seasons, so it might be good to have related tv files on the same disk, which is determined by Split Level.

Do you know anything about the files you might be missing?

I know they are any combination of movies and tv shows I just haven’t gone through them all to figure out which. Going to be a lengthy process with all the ones I have. Does that seem to be my only option at this point?

Data from deleted files are still on a disk until their space is reused, they just aren't part of the filesystem anymore.

You could see if UFS Explorer can recover anything from that disk besides the files it currently has.

Is that a docker/plugin? I’ll give that a shot and see what happens. Thanks for the help!

2 hours ago, Chess035 said:

Is that a docker/plugin? I’ll give that a shot and see what happens. Thanks for the help!

No, It is a paid-for Windows utility.

It does have a free option that will allow you to scan the disk and see what would be recovered if you paid for a licence so you can decide if it is worth it.