ETYM AS. cluster, clyster; cf. LG. kluster (also Swed. and Dan. klase a cluster of grapes, Dutch klissen to be entangled?.).<br /> 1. A number of things of the same kind growing together; a bunch.
2. A number of similar things collected together or lying contiguous; a group.
3. A number of individuals grouped together or collected in one place; a crowd; a mob. + prikaži više

The grouping of multiple servers in a way that allows them to appear to be a single unit to client computers on a network. Clustering is a means of increasing network capacity, providing live backup in case one of the servers fails, and improving data security. See also cluster (definition 4), server.