I would second Yogesh's suggestion of webdav. I am under the impression that you need to use webdav to connect to:
/var/dam/*
Where you can then drag/drop a large volume of content in.
While I haven't tried 60gb - I have successfully done this with 3 to 5gb. I would suggest that you try some POC with 5 to 10gb. If that works, try it with 60gb.
Todd
Clik here to view.
