Computer cluster

Computer cluster
A computer cluster consists of a set of loosely or tightly connected computers that work together so that, in many respects, they can be viewed as a single system Unlike grid computers, computer clusters have each node set to perform the same task, controlled and scheduled by software
The components of a cluster are usually connected to each other through fast local area networks "LAN", with each node computer used as a server running its own instance of an operating system In most circumstances, all of the nodes use the same hardware1 and the same operating system, although in some setups ie using Open Source Cluster Application Resources OSCAR, different operating systems can be used on each computer, and/or different hardware2
They are usually deployed to improve performance and availability over that of a single computer, while typically being much more cost-effective than single computers of comparable speed or availability3
Computer clusters emerged as a result of convergence of a number of computing trends including the availability of low-cost microprocessors, high speecomputer cluster technology, computer cluster software, computer cluster for gaming, computer cluster workstations, computer cluster images, computer cluster companies Computer cluster