A hybrid model for mobile file systems

Existing distributed file systems are based on either a client-server model or a peer-to-peer model. We believe that the dynamic conditions of mobile computing and new classes of devices such as PDAs will no longer permit rigid adherence to either of these models. We argue that a hybrid of the two will have to be used. We then propose a file system design based on such a model which exploits the ability of highly portable devices like PDAs to be carried by their owners at all times. We examine the relationship between mobile computing personae and file systems and show how the personae concept can be used to support the file system needs of mobile users. Finally we discuss some issues raised by the implementation we are building.