Correct, @Kprawn, Storj farmers will make available unused space on their hard drives to the network using the DriveShare app. They can offer this space for rent to other users who will pay the farmers for the space they want to occupy with the SJCX token.

The users of the network will be able to choose their preferred level of redundancy in the MetaDisk app, however, for simple data storage, a minimum 3x redundancy is recommended. As @brandoff already pointed out, you can find all the technical details in the Storj whitepaper recently published at http://storj.io/storj.pdf, and specifics about the subject of redundancy in chapter 4: "Proof-of-Redundancy"