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Is It Possible To Grant Different Servers Simultaneous Access To The Same Data?

Answer»

You can do that if you are using a special purpose cluster file system. CURRENTLY, there are two of them: the Oracle Cluster File System (OCFS) 2 and the GLOBAL File System. Both are open source, so you can choose whichever system you prefer. If, however, you are creating your cluster on Red Hat Linux, you'll most likely work with GFS, which Red Hat DEVELOPED. If you use Novell's SUSE, you will be working with OCFS2, because it is the only cluster-aware file system supported on SUSE. The special thing about these file systems is that they have a shared cache. That means if one server writes to the file system, the other server KNOWS about it.

You can do that if you are using a special purpose cluster file system. Currently, there are two of them: the Oracle Cluster File System (OCFS) 2 and the Global File System. Both are open source, so you can choose whichever system you prefer. If, however, you are creating your cluster on Red Hat Linux, you'll most likely work with GFS, which Red Hat developed. If you use Novell's SUSE, you will be working with OCFS2, because it is the only cluster-aware file system supported on SUSE. The special thing about these file systems is that they have a shared cache. That means if one server writes to the file system, the other server knows about it.



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