Somersault cloud: Toward a cloud-of-clouds service for personal backup

Cloud services has been proposed and provided by many research and industry groups for the mobile devices. However, challenging issues arise in using such systems for mobile devices. It is always difficult to manage the services with high usability and keep the resource cost low. In this paper, we propose Somersault Cloud (SCloud) to provide a system not only with high usability and performance, but also with low resource consumption for the client side devices. It provides the mobile devices an unified entry to multiple heterogeneous backend cloud services. To make the applications transparently access the cloud resources, POSIX compliant file system interface is provided. With implementing and evaluating a prototype system, the result shows that SCloud is an service with high usability and low resources consumption.