Global File System

Abbreviated as GFS, a Global File System is a cluster file system that enables a cluster of computers to simultaneously use a block device that is shared between them. GFS reads and writes to the block device like a local file system, but also allows the computers to coordinate their I/O to maintain file system consistency. With GFS any changes that are made to the file system on one computer will immediately be seen on all other computers in that cluster.

See cluster.
See also clustering.

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