Storage is divided into two categories.
File storage includes files in attachments, and Chatter files (including user photos)
Data storage includes the following:
- In Contracts
- Closed Deals
- Email messages
For data storage, you are allocated 1 GB. For groups over 50 users, groups are allocated 20MB per user (For example, 100 users multiplied by 20 MB per user is 2,000 MB or 2GB.)