We really need MDT to run on its own VM, which I will refer to it as RDS-Ops. MDT can run on either Windows 8.1 or Windows Server 2012 R2, but I am going to suggest using the Server OS and creating a VM with extra VHD for the resources used by MDT.
I have included a script to create RDS-Ops that does this and enables deduplication in Windows Server to save more than 80 percent space on this second drive.
If hardware resources are limited on your host, you may want to shut down all of the running VMs, except the RDS-DC, manually or with the following PowerShell command:
Get-VM |where status -NE "Running" | where name -NE RDS-DC | stop-VM
Once RDS-Ops is in place, install MDT 2013 by performing the following steps: