With the ever-increasing development of Internet

today's data-centric applications require storage platforms to possess high scalability.It causes a data-model-mismatch problem between applications and current storage systems.This paper designs a new network-attached object-based storage device (NAOSD)

which provides storage interfaces for structured data to solve this problem.The usage of NAOSD in cluster storage environments is proposed

which introduces the uniform storage of data and meta-data as well as query-locating mechanism.The performance analysis shows that its access time increases with the system scale logarithmically

which is better than the conventional systems.The simulator of NAOSD have been implemented

and experiments show it improves the performance remarkably.