InfoStor: Highly Available Distributed Block Store

In order to adapt to the requirements of the massive scale storage environments, and improve storage space utilization of the data center host, we designed and implemented InfoStor, a heterogeneous environment, distributed block storage system. Through in-band storage virtualization technology that provides the reliability of traditional enterprise arrays with low cost and better scalability; provide a copy of redundancy and back-end support the adaptive copy of reconstruction; Using consistent hashing algorithm based on virtual node to manage replica of storage backend to improve the load balance and performance of the distributed block storage system. The evaluation experiments demonstrate that compare to ordinary iSCSI network hard disk, InfoStor reach considerable data processing capabilities I/O throughput, it is foreseeable that system performance did not impact by storage virtualization and distributed storage backend.