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Line 3: A Linux cluster filesystem, e.g. [[GFS]] or [[OCFS2]], is the basis to form a Single System Image ([[SSI]]) on filesystem level with any attached Storage Area Network ([[SAN]]). The architecture of a [[diskless]] [[computer cluster]] makes it possible to ~~seperate~~separate servers and storage array. The operating system as well as the actual reference data (userfiles, databases or websites) are stored ~~competively~~competitively on the attached storage system in a centralized manner. Any server that acts as a cluster node can be easily exchanged by demand. The additional abstraction layer between storage system and computing power eases the scale out of the infrastructure. Most notably the storage capacity, the computing power and the network bandwidth can be scaled independent from one another.

Diskless shared-root cluster: Difference between revisions