Salesforce CRM has two categories of storage, namely data—used to store records (for example, Opportunity, Account, or Custom object data records)—and file storage—used to store file attachments (for example, presentations, spreadsheets, images, or Adobe PDFs, and so on).

As a minimum, Salesforce CRM (Enterprise Edition) provides 1 GB for data storage and 11 GB for file storage. In total, this 12 GB storage amount (1 GB for data plus 11 GB for files) is the minimum total storage allocated for a Salesforce CRM organization. However, the storage amount increases as more active users are added, as there is also a 20 MB per user limit for data and 2 GB per user for file storage.

As an example, an organization with 500 active users sees the storage amount for data increase to 10 GB. This is calculated as 500 (users) multiplied by 20 MB, which equals 10,000 MB or 10 GB. The storage amount for files is increased to 1,000 GB (500 users multiplied by 2 GB)

To view your organization's used data space and used file space, navigate to Setup | Data Management | Storage Usage.

You can view the limits and used amounts for data and file storage, the amounts in use per record type, and the current file storage usage. You can also view the top users of data and file storage. To see exactly what is being stored by the listed users, you can click on that user's name.