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| | NFS (BS2000/OSD) |
Distributed file system that allows a BS2000/OSD system to serve as central file storage area for other smaller systems |
Current version: V3.0
The NFS software product (Network File System) provides a distributed file system in a heterogeneous computer network. As the server of a local computer network, the distributed file system NFS provides one or more file systems in one or more BS2000/OSD files. This system can be accessed by authorized NFS users and by authorized NFS clients in other systems. In this way, the disk storage on the BS2000/OSD system becomes the central filestore for other (smaller) DP systems, and the BS2000/OSD system becomes a central data server.
In addition to the server functions, NFS also provides the client function for BS2000 users. The client function can be used to access other NFS server systems. BS2000 users work with NFS files via the program and command interfaces of the POSIX file system. The user can access files in the same way as for local (POSIX) file access, even when these files are physically stored on a remote system.
NFS (BS2000/OSD) as server
With the POSIX file system, BS2000/OSD is enhanced with a hierarchically structured file system which is organized as a UNIX file system (VFS/UFS). The file system comprises directories and files. Branches to other directories or files are possible from directories. Containers for individual file systems are implemented as BS2000 PAM files on public volume sets.
NFS (BS2000/OSD) as client
It is also possible for users connected to the BS2000/OSD computer to work with file systems, directories and files which are stored on other computers. In this role NFS (BS2000/OSD) operates as a client. These remote file systems, directories and files are referred to below as NFS file systems. BS2000 users work with NFS file systems via the program and command interfaces of the POSIX file system. The commands for processing the POSIX file system form part of the basic shell which is included in BS2000/OSD-BC.
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