I am a photographer and use external hard drives to store my working files - I don't keep them on my laptop. I am currently using a different cloud backup system, but am interested in using Dropbox, so I can view previews of image files. I need to transfer about 2TB and would like to know if there's a way to easily get them on to Dropbox, without them going on to my laptop, i.e. without using selective sync - I want it to happen in the background, automatically. Is this possible with Dropbox? Thanks.