Virtual storage and the Jupyter notebook server both run on Data Lab servers: when you retrieve a file from virtual storage (e.g. using the storeClient.get() method in a notebook), or create a file directly in the notebook (e.g. saving an in-memory object like a Pandas data frame), that file is created on the note book server's disk. To download it to your laptop/desktop, use the file browser in Jupyter the mark the files for download and then hit the 'Download' button at the top of the file listing.