Our company already uses version control, and is already doing daily's backups.
However, it is my boss's concern to keep the source code somewhere "safe enough" in case of multi-robbery or some natural disaster, ecc..
I tried searching google for something, and I guess the best solution would be some online backup service.
Did you have to face a similar problem before? How did you solve it?
If possible, can you reference a good service that solved your problem?
UPDATE: we currently backup on 2 dvds. One is kept in my boss's house and one is stored inside the company building.