- I have created a Windows Storage Space with 3x2TB drives using Control Panel. 3 columns, thinly provisioned. PC is running Windows 10 Pro.
- I have added 1 additional 2TB drive to the Pool and extended the Space using Control Panel.
- I have filled the Space with data to the point where it complained about lack of space.
- I have added 7 additional 2TB drives to the PC, for a total of 11x2TB drives, added them to the Pool using Control Panel: Storage Spaces showing the enlarged pool, but original Space size (which is correct).
- I have then tried to expand the Space using Control Panel: Storage Spaces “Change” dialog showing original values.
- Upon entering any value (literally anything but it’s current size), I’m given an error “The specified size is not valid.” and the button to proceed is grayed out: Storage Spaces “Change” dialog not allowing to make changes.
- I have then opened PowerShell and executed the command
Resize-VirtualDisk -FriendlyName DATA -Size (9TB), hoping to see more detailed error message. The command, however, ran successfully: PowerShell command window
- When refreshed, the Control Panel of Storage Spaces is showing the new size of Space: Storage Space window reporting the new correct size.
- When I now try to resize the Space using the UI, it still reports the same error. Using PowerShell, I was able to expand the Space to 13TB without any problems.
My question is obvious: Why is the UI not letting me expand the Space, but PowerShell does?