I do not suggest restore in MAC computer, is not a good scenario for several reasons. A lot of pain for getting OpenKM running there, is quite difficult installing all the third-party applications needed and also you must disable MAC indexing tool or the performance of the application will be affected ( by default MAC OS it have a tools what indexes all the contents in your computer, this feature in combination with a DMS is not a good idea and you will get worse performance ).
About migration really is moving the files from one server to other, restore the database ( in production should be used MySQL if you do not configured it, then you are using the embedded database, that means is a file system database and with copying files, you are directly restoring it ).
If you understanding the installation process
https://docs.openkm.com/kcenter/view/ok ... ebian.html then you will also understanding how to move it and what.