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a server is a computer designed to process requests and deliver data to another computer over the, illuminated server room panel

A server is a computer designed to process requests and deliver data to another computer over the internet or a local network. A well-known type of server is a web server where web pages can be accessed over the internet through a client like a web browser. However, there are several types of servers, including local ones like file servers that store data within an intranet network.

Although any computer running the necessary software can function as a server, the most typical use of the word references the enormous, high-powered machines that push and pull data from the internet.

Most computer networks support one or more servers that handle specialized tasks. As a rule, the larger the network in terms of clients that connect to it or the amount of data that it moves, the more likely it is that several servers play a role, each dedicated to a specific purpose.

The server is the software that handles a specific task. However, the powerful hardware that supports this software is also called a server. This is because the server software that coordinates a network of hundreds or thousands of clients requires hardware that’s more robust than computers for consumer use.

While some dedicated servers focus on one function, such as a print server or database server, some implementations use one server for multiple purposes.

A large, general-purpose network that supports a medium-sized company likely deploys several types of servers, including:

Hundreds of specialized server types support computer networks. Apart from the common corporate types, home users often interface with online game servers, chat servers, and audio and video streaming servers, among others.

Some servers exist for a specific purpose but aren’t necessarily interacted with in any meaningful way. DNS servers and proxy servers are some examples.

Many networks on the internet employ a client-server networking model that integrates websites and communication services.

An alternative model, called peer-to-peer networking, allows all the devices on a network to function as either a server or client on an as-needed basis. Peer networks offer a greater degree of privacy because communication between computers is narrowly targeted. However, due in part to bandwidth limitations, most implementations of peer-to-peer networking aren’t robust enough to support large traffic spikes.

The word cluster is used broadly in computer networking to refer to an implementation of shared computing resources. Typically, a cluster integrates the resources of two or more computing devices that could otherwise function separately for some common purpose (often a workstation or server device).

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A web server farm is a collection of networked web servers, each with access to content on the same site. These servers function as a cluster conceptually. However, purists debate the technical classification of a server farm as a cluster, depending on the details of the hardware and software configuration.

Because servers are software, people can run servers at home, accessible either to devices attached to their home network or devices outside the network. For example, some network-aware hard drives use the Network Attached Storage server protocol to allow different PCs on a home network to access a shared set of files.

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Plex media server software helps users view digital media on TVs and entertainment devices regardless of whether the data exists in the cloud or on a local PC.

The Ins-and-Outs of Media Server Software Solutions

If your network is set up to allow port forwards, you can accept incoming requests from outside your network to make your home server act as a server from a big company like Facebook or Google (where anyone can access your resources).

However, not all home computers and internet connections are suitable for lots of tra
ffic. Bandwidth, storage, RAM, and other system resources are factors that affect how large of a home server you can support. Most home operating systems are also void of server-related features.

Since uptime is critically important for most servers, servers aren’t designed to shut down but instead run 24/7. However, servers sometimes go down intentionally for scheduled maintenance, which is why some websites and services notify users of scheduled downtime or scheduled maintenance. Servers might also go down unintentionally during something like a DDoS attack.

A web server that reports an error due to downtime—whether intentional or not—might do so using a standard HTTP status code.

When a web server takes down information permanently, or even temporarily, you might still be able to access those files if a third-party service archived it. Wayback Machine is one example of a web archiver that stores snapshots of web pages and files stored on web servers.

Large businesses that have multiple servers don’t typically access these servers locally, like with a keyboard and mouse, but instead by remote access. These servers are also sometimes virtual machines, meaning that one storage device can host multiple servers, which saves physical space and money.

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