If you are getting this error when you try to expand your storage spaces Vdisk, and you are using StorageTiers.
![error extending volume size not supported storage spaces](https://kasperk.it/wp-content/uploads/2018/01/error-extending-volume-size-not-supported-storage-spaces-300x133.png)
error extending volume size not supported storage spaces
you can expand your volume by using powershell instead
run the following command to get the names of your StorageTiers
Get-VirtualDisk <Vdisk FriendlyName> | Get-StorageTier | Select FriendlyName
In my case the name is VeeamVolume
![Get-StorageTier](https://kasperk.it/wp-content/uploads/2018/01/Get-StorageTier-300x38.png)
Get-VirtualDisk “VeeamVolume” | Get-StorageTier | Select FriendlyName
and then expand the desired StorageTier
Get-StorageTier <StorageTier FriendlyName> | Resize-StorageTier -Size <Size>
![Resize-StorageTier](https://kasperk.it/wp-content/uploads/2018/01/Resize-StorageTier-300x14.png)
Get-StorageTier VeeamVolume_HDD_Tier | Resize-StorageTier -Size 50TB
and after the resize
![after StorageTier Resize](https://kasperk.it/wp-content/uploads/2018/01/afterResize-300x59.png)
after StorageTier Resize
source: https://docs.microsoft.com/en-us/windows-server/storage/storage-spaces/resize-volumes