An Overview of Cluster Computing Fundamentals
Cluster computing is the group of connected computers that work together in various aspects and form single computer shape. The components of cluster computing are connected through fast local area network. It is usually done to enhance the performance and is available in form of single computer.There are two types of clusters which are as follows:
High availability clusters:
It is also called failover clusters that are implemented for the availability of the services. They work with the use of redundant nodes that provide assistance when the components of system fail. The Common size of HA cluster is consisting of two nodes that provide quite good amount of redundancy. The implementation of HA cluster is done for the redundancy of the components and removes the risk of single point failure.
Load-balancing clusters
It is implemented when many computers are connected to share functional or computational work load in form of single virtual computer. Requests and queries of the users are managed and distributed among all standalone computers to adopt a shape of cluster. It maintains balance among computational works and improves the performance of system due to the implementation of load balancing cluster technique.
Compute clusters
Clusters are formed and used for computational tasks. For example a cluster can support vehicle crashes and computational simulation of weather. The basic task of compute cluster is to couple the two individual nodes to each other. The design of cluster is known as Beowulf cluster. For example a single job related to computer needs frequent connection among nodes and cluster forms a dedicated network to establish this communication.
Grid computing
Grid is also called clusters that focus more on throughput just like computing utility. Grids can incorporate heterogeneous collection of computers as it is used for the optimization of the workload and server to control the location of different jobs assigned to computers.
Advantages of cluster computing
There are many benefits of cluster computing over main frame computers so organization prefers to implement that technique.
Reduction in cost:
The processing power of high performance cluster proves more affordable than a mainframe computer. It reduces price per power unit to get ROI from IT budget.
Improve network technology:
The development of cluster computing has brought vast improvement in networking as it reduces the cost of network implementation and enhances the performance with single main frame computer. As computers are linked through virtual local area network and that network considers each node as separate entity.
Scalability: Cluster computing provides you an extensive feature of scalability. It is easy to expand the computer cluster where there is need of additional node to the network.
Availability:
If the mainframe computer fails, then entire system shuts down. While in cluster computing, if one node fails, the operation of failure node is transferred to other node to ensure that there is no any interruption in the service.
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