| 摘要 |
Embodiments of the invention provide a data server that can provide access to data, such as mainframe data, to open systems platforms. The system may be embodied strictly as a software program, as software and hardware, or as hardware alone. Generally, the system includes a first computing system providing access to shared data. The first computer system includes a processor, a memory system and a shared storage interface coupling the first computing system to a shared storage device in which the shared data is maintained by a second computing system in a manner that is not natively compatible to the first computing system. The computing system further includes an interconnection mechanism coupling the processor, the memory system and the shared storage interface and a network interface coupling the first computing system to a network and the second computing system. The memory system in such an embodiment is encoded with a data access server which executes on the processor in the first computing system. When executing, the data access server receives, via the network interface, a client message to access data on the shared storage device and in response to receiving the client message, retrieves, via the network interface, data storage information provided from the second computing system coupled to the first computing system. The data storage information is stored in the memory system and allows the data access server on the first computing system to access the data in the shared storage device in a manner that is compatible with the first computing system. The data access server provides access, via the network interface, to the data on the shared storage device in conformance with the client message based on the retrieved data storage information. The data access server can also provide a virtual file system to allow networked clients that implement file or other data sharing protocols such as NFS and CIFS to obtain access, for example, to mainframe data. |
