Creat a virtualBox in DL2100 or window partition

Hi I could find a lot off Addons that can help with that. When I do a simmilar search I only find Synology that can provide virtualBox, Linux or window partition and more and more addons.
Any clue how to do this using SSH or 3 rd party addons etc…

I feed like I made a wrong choice buying WD instead or Synology.