@article{oai:ipsj.ixsq.nii.ac.jp:00018533, author = {Yoshiko, Yasuda and Shinichi, Kawamoto and Atsushi, Ebata and Jun, Okitsu and Tatsuo, Higuchi and Naoki, Hamanaka and Yoshiko, Yasuda and Shinichi, Kawamoto and Atsushi, Ebata and Jun, Okitsu and Tatsuo, Higuchi and Naoki, Hamanaka}, issue = {SIG11(ACS3)}, journal = {情報処理学会論文誌コンピューティングシステム(ACS)}, month = {Aug}, note = {X-NAS (eXpandable network-attached storage) a scalable clustered file system designed for entry-level NAS has been developed. It enables centralized management of multiple NAS systems and virtualizes them into a single-file-system view for different kinds of clients. The core of X-NAS is a multi-protocol virtualized file system (MVFS) and its key feature ? a file-handle cache —improves the system scalability while maintaining X-NAS manageability. To evaluate X-NAS scalability an X-NAS prototype was designed and tested according to the NFSv2 implementation. These tests indicate that an eight-way X-NAS has a 10% faster response time and a 25% higher throughput than a conventional single NAS., X-NAS (eXpandable network-attached storage), a scalable, clustered file system designed for entry-level NAS, has been developed. It enables centralized management of multiple NAS systems and virtualizes them into a single-file-system view for different kinds of clients. The core of X-NAS is a multi-protocol virtualized file system (MVFS), and its key feature 竏驤 a file-handle cache —improves the system scalability while maintaining X-NAS manageability. To evaluate X-NAS scalability, an X-NAS prototype was designed and tested according to the NFSv2 implementation. These tests indicate that an eight-way X-NAS has a 10% faster response time and a 25% higher throughput than a conventional single NAS.}, pages = {68--78}, title = {Scalability of X - NAS : A Clustered NAS System}, volume = {44}, year = {2003} }