GlusterFS Concepts
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Overview
GlusterFS is a storage technology that uses volumes hosted on different servers to construct a distributed replicated network file system. The file system is fully POSIX compliant. It also supports storage paradigms as Block Storage and Object Storage.
GlusterFS stores the data on stable kernel file-systems like ext4 or xfs. It does not use an additional metadata server, it uses instead an unique hash tag for each file, stored within the file system itself.