Hi Kaz, thanks for your quick reply. Actually, my university has a deal with Microsoft whereby its members can store up to 1TB on OneDrive for free. I am currently using this, but I am new to OneDrive. To my knowledge, one possibility is to have all of my files on OneDrive (and nothing in my computer), and work with the files through the internet . Alternatively, I can copy and save a mirror image of everything in my computer on OneDrive, using it as a backup storage facility. That way, I can work with my files even in the absence of an internet connection. But I would then have to update the backup frequently, by manually copying and pasting. What I would like to know is whether there is a way to set up regular automatic backups when I am connected to the internet - which would be very convenient and time-saving. In other words, can I use OneDrive like an Apple Time Machine? Thanks, -Srini