Your MySite and OneDrive are upgraded separately from the Harvard SharePoint tenant. If you have been using MySites, you may see a pink bar asking you to upgrade your MySite - go ahead and click it. Your MySite and OneDrive will update in a few minutes.
You are initially allocated 1TB, or 1,000 GB, for your OneDrive for Business storage. In practical terms, that's 17,000 hours of music or 310,000 pictures or 1,000 hours of video. This is expandable on request. Total storage space is unlimited.
All files that you store in OneDrive for Business outside of the "Shared with Everyone" folder are private initially – only you can see them – unless you decide to share them. You can share files with specified co-workers so you can collaborate on projects.
OneDrive for Business is a personal library intended for storing and organizing your work documents. As an integral part of SharePoint Online, OneDrive for Business lets you access your most important SharePoint documents from your desktop or from any device, anywhere.
Most Microsoft Office file types can be viewed and edited online in a web browser using the Office Web Apps in SharePoint
OneDrive for Business allows online collaboration and editing at the same time as others across PCs, Macs, and the web