07 Dec

Web Server Farming: how do they work?

A server farm also referred to as server cluster, computer farm or ranch, is a group of computers acting as servers and housed together in a single location. A server farm works by streamlining internal processes by distributing the workload between the individual components of the farm and through which it expedites computing processes by harnessing the power of multiple servers. A Web server farm can be either , a website that has more than one server, or an ISP  (Internet service provider) that provides web hosting services using multiple servers.

The farms rely on load-balancing software’s that can accomplish such tasks as tracking demand for processing power from different machines, prioritizing the tasks and scheduling and rescheduling them depending on priority and demand that users put on the network. When one server in the farm fails, another can step- in as a backup. Such as in a business network, a server farm or cluster might perform such services as providing centralized access control, file access, printer sharing, and backup for workstation users. The servers may have individual operating systems or a shared operating system and may also be set up to provide load balancing when there are many server requests. As for on the Internet, a Web server farm, or simply Web farm, may refer to a Website that uses two or more servers to handle user requests. Typically, serving user requests for the files (pages) of a Web site can be handled by a single server. However, larger websites may require multiple servers.

This is why combining servers and processing power into a single entity has become and have been relatively common for many years in research and academic institutions. As of Today, more and more companies are utilizing server farms as a way of handling the enormous amount of computerization of tasks and services that they require through Web Server Farming.

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10 Nov

What is Virtualization?

When you hear people talk about virtualization, they’re usually referring to server virtualization, which means a combination of software and hardware engineering that creates Virtual Machines (VMs) – an abstraction of the computer hardware that allows a single machine to act as if it were many machines. Each virtual machine can interact independently with other devices, applications, data and users as though it were a separate physical resource/unit.

Why is Virtualization used? Virtualization is being used by a growing number of organizations to reduce power consumption and air conditioning needs and trim the building space and land requirements that have always been associated with server farm growth. Virtualization also provides high availability for critical applications, and streamlines application deployment and migrations. Virtualization can also simplify IT operations and allow IT organizations to respond faster to changing business demands

Virtualization may not be a magic bullet for everything. While many solutions are great candidates for running virtually, applications that need a lot of memory, processing power or input/output may be best left on a dedicated server. For all of the upsides of virtualization isn’t magic, it can introduce some new challenges  as well for firms to have to face. But in most cases the pro’s of cost and efficiency advantages will outweigh most if not all the cons, and virtualization will continue to grow and gain popularity in today’s world.

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