The demand for file storage services is no longer limited to individual users. In fact, almost every website has a need for file storage services, such as user albums on community websites, and attachment downloads on professional websites, etc. If a file storage system that is feature-complete, secure, stable, efficient, and cost-effective can be provided to a broad range of network operators, then this would represent an entirely new concept in online file storage services—facing website operators rather than directly targeting end-users.