) is a big propont of the ever burgeoning reliance on data storage in the invisible but growing 'cloud.' This virtual, online-only environment has a number of advantages. The cloud allows users to access files from virtually any device and from any location. It allows users to share and interact with documents instantly and easily. And since cloud providers are willing to offer an unlimited number of storage options (often for a fee, of course), consumers and business professionals can dump their clunky, breakable hard drives and store everything online. In theory, the cloud is the solution to everyone's existing problems. Unfortunately, the cloud has its own set of problems that make it impossible to fully support. Business professionals are learning the hard way that it can be very risky to store their important files exclusively in the cloud. In addition to the risk that they will be hacked and

), it was another painful reminder of the risk involved in storing files online. Google outages have frustrated users since its Gmail service was created more than six years ago. While e-mail is and always has been a cloud-based service (excluding opened messages that may have been saved to a user's hard drive), word documents, spreadsheets, presentations and other business files were traditionally created and stored on one PC or server. Consequently, when a bug allowed private documents to be