Please follow the demonstration that performs the steps below to deploy a Virtual Disk needed for Temporary Storage:

1. Before you start creating the Disk, make sure that your server has these two features enabled under Server Manager-->Add Roles and Features:

2.  Create a Virtual Disk by right-clicking Virtual Disks in the Management Console and selecting "Create Virtual Disk"

3.  Assign to the folder where your devices are and select the type

Right-click Assign Virtual Disk 

Select the Disk and select the Type

4.  Lastly, we need to enable Temporary Storage in your profile.  

Be sure the drive letter you chose (e.g. T: in the example above) is not being restricted under Computer Settings:

 Note: Virtual Disks cannot be created on a Home Edition OS even when the Console is opened as an administrator

For Dual Persona, the virtual disk process is similar and you can read more about it here:

https://kb.thinscale.com/secure-remote-worker-knowledge-base/setting-up-dual-persona

1.  First in order to create Virtual Disks, you'll need to download and install our Package Creator which is used both for packaging software and for the creation of disks.
   Note: Since it utilizes Bitlocker, you'll both need to be able to run the Package Creator as admin, and also it needs to be launched from a Windows OS other than Windows Home editions since that does not include the full functions of Bitlocker.
    
2.  After installing and launching as admin, select “Create Virtual Disk” button
   
   3.  In this case I'm making a disk for use of our recommended security feature Dual Persona.  (It can also be used for Temporary Storage disks).  Select your intended size and give it a label.  You also have the choice to define a custom unlock password if needed:
   
   
   
   
   4.  Then it will prompt you to save your virtual disk, which will be .vd extension
   
   
   
   5.  Now your disk is ready to deploy to your Device Portal.  In your Device Portal, go to your Virtual Disks section and hit “Add” and then hit “choose file” and select your .vd for upload.  Be sure you are deploying to your intended Resource Folder
   
   
   
   6.  Once it finishes processing, please click “Verify Package” to ensure it gives the success message.
   
   Please be sure to choose the intended use for this disk (I am using Dual Persona in this case).
   
   Then hit Save at the top right corner after the green success message briefly displays.
   
   
   
   7.  Now the disk is present in the Cloud, but not actively being deployed yet.  Go to your Device Group for your intended deployment, and at the Virtual Disk section at the bottom, hit “Select Virtual Disks”
   
   
   
   8.   Check the boxes to include the disk(s), and hit Save
   
   
   
   
   9.  Lastly, please go to your Security Profile for your deployment, to the Dual Persona Section and enable and  match your disk size and label.  Then hit Save.
   
   
   
   The next time a user launches into their session, they should get the deployment.
   
   Please note if you are replacing an existing drive, either for Dual Persona or Temporary Storage, you would need to first have them back up any data they were using there if it's still needed, and then delete the disk which is on their machine under C:\ProgramData\TDA\Disks