The key changes are as follows:
- OneDrive for Business and Site Collections now can be up to 1 TB in size.
- Office 365 Tenants can now buy an unlimited amount of storage.
OneDrive for Business users are allocated 25 GB / user. For site collections, tenants are provided a total available storage of 10 GB + 500 MB x the number of users. So if you have 20 users, each user gets 25 GB for OneDrive Storage and your Site Collection storage is capped at 20 GB. However, as of today, you can now purchase additional storage of up to 1 TB for OneDrive and an unlimited amount (assuming you’re willing to pay) for Site Collections.
Extra storage is $0.20 / GB / Month.