The system requirements are as follows:
* additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices).
Metal compute acceleration requires macOS High Sierra 10.13 or later
Registration and content sync feature requires macOS Sierra 10.12 or above.
* additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices).