The host system must have enough memory to run macOS or Mac OS X, the guest operating systems that run inside the virtual machines on the Mac, and the applications that run in the Mac and guest operating systems.
The minimum memory required on the host system is 4 GB. 8 GB is recommended.
The host system must have 750 MB of free disk space for Fusion Pro and at least 5 GB of free disk space for each virtual machine
