The system of the invention is a data server that can provide access to data, such as mainframe data, by open systems platforms. The system includes a shared storage interface coupling a first computing system to a shared storage device in which the shared data is maintained by a second computing system...http://www.google.de/patents/US6718372?utm_source=gb-gplus-sharePatent US6718372 - Methods and apparatus for providing access by a first computing system to data stored in a shared storage device managed by a second computing system
