Design and Implementation of a Virtualized Storage Fabric for Cloud Server

High concurrent Cloud Server needs high-density CPUs and each CPU needs its own dedicated local disk. In order to save disk space, a virtualized storage fabric is designed to share multiple CPUs attached to one storage device. This paper presents a new storage virtualization strategy based on a Shared Storage Controller (SSC). SSC is a bridge between multiple CPUs and one disk. It is implemented in hardware level using FPGA. It virtualizes disk resource into volumes and provides private and public volumes for each CPU according to their requirements. With SSC, Cloud Server can be more scalable and storage fabric can be safer. In this paper, the architecture of SSC is demonstrated and some preliminary results are presented.