Logging into web interface of this filer should have taken you to a tool called Filer View which is a storag
e management tool ,which only gives you data about the used
space of volume and also options to manage the volume.However in order to check
which files are unwanted you would have to mount the volume and manu
ally check each and every file and the space used by them, If there are fil
es which are not required and are occupying space then you might have to delete them.However be careful
and cross check twice before deleting data or files,make sure you don't need them .
Also you can check them using DFM .Another option would be to re
size the volume so that you can increase the space by which you can have more data in the volume.Examine the pros and cons before going ahead with different options available.
Regards,
Vinay