OneDrive is an online storage service that you can use to store documents, notes, photos, music, videos or other types of files. With OneDrive you can access your files from nearly any device, and you can share them with others. Sign up for OneDrive. The amount of additional storage that you get depends on your subscription:
Customers with an active Microsoft 365 Personal subscription receive an additional 1 TB of OneDrive storage per subscription plus 5 GB of storage for free.
Customers with an active Microsoft 365 Family subscription receive an additional 1 TB of OneDrive storage per user, for up to 6 users, plus 5 GB of storage for one user. Each additional user must have their own Microsoft account and be added to the Microsoft Account site.
The additional storage is applied to the OneDrive account that is linked to the Microsoft account used to create the Microsoft 365 subscription. For Microsoft 365 Family, the storage is tied to the Microsoft accounts of the household members who have been added to the subscription.