Comment by snielson

The "Files-On-Demand" feature of OneDrive makes it possible for everyone in the family to login into any computer with OneDrive and quickly access all their files (I have 500/500 fiber). Because some/most of the files are stored on the cloud and only downloaded when they are accessed, the hard drive of the computer can be smaller (1TB) than the total sum of all the files stored by all the users (6TB). It's very nice. I can also turn off Files-on-Demand and everything will be stored locally on my computer. It sounds like many people are bothered that Files-on-Demand is enabled by default.