don't know if you are already aware of a nice little feature of your Z2.
The feature is called "Remote Shares" (Remote Freigabe in German) and is to be found in the Settings Menu --> Storage --> at the very bottom. so it is kinda hidden.
With this feature u can acess Windows shares and integrate them into your linux filesystem.
The description of every field is at least in German quite dumb so u have to kinda guess what it means.
So first you click on the "plus" symbol and select Windows Share.
First field (German Anzeigename) u type in a name for the folder, under which u will be able to access the remote share (/storage/remote/"yourfoldername").
2nd field (German Host) u type in the (local) IP-adress of the PC, where the share is, you want to integrate.
3rd field (German Name freigeben) is the specific share folder on that PC
4th field (German Benutzername) is the user name of the Windows PC with which u log on there
5th field (German Kennwort) is the password which u use with the user name.
Works great over Wifi.