Conversation so far:
who owns the data stored in a cloud system
If you created the data, you’re the legal owner, regardless of where it is stored.
where is the data stored in cloud systems
The physical storage spans multiple servers (sometimes in multiple locations), and the physical environment is typically owned and managed by a hosting company.

Question: how much can be stored in one storage unit
Self-contained rewrite: how much data can be stored on one cloud server