I’ll add a few pieces of information to Andrew’s response.
DreamObjects does store three copies of your data. The underlying Ceph storage technology stores these copies on several hard drives and is self-healing should any drive fail (meaning that if a copy is determined to be bad it will automatically create a new copy based on the two remaining good copies).
Also as Andrew mentioned, DreamObjects is configured to store your data intelligently in the data center. It keeps one copy in a chosen rack of machines, the second copy in the same row but in a different rack. Finally, it keeps the third copy in a separate row to limit potential failures from network or power outages.
As for CDN, this is coming very soon (I’m working on some documentation now)! As Andrew mentioned, bandwidth will be more expensive but it will be very fast and global.