In computer science, a computer server is a single piece of computer hardware or software which provides extra functionality for external clients, also known as “clients.” This architecture is also known as the client/server design. A client is a program, which in this case is a browser or web server for example, which requests information from a server. The server is then able to reply to or deny the request based on what it already has or will have stored in its cache. Clients can be single processes or multiple processes, depending on the type of application and configuration they are running.
A computer server can be either physical or virtual. Physical servers are built and run by a company’s IT staff. Virtual servers are hosted on a remote machine such as a networked laptop or a workstation. Both serve similar purposes and both can be scaled up and down when needed, making them suitable for many medium-sized business applications. The key difference between these two types of server is that while a physical machine can be rebooted as required, virtual machines are not able to be rebooted.
A computer vps server serves as a central storage and data retrieval device for all client computers connected to it. It is designed so that all computers connected to it can access and share the files and applications running on it. For example, the system might contain a file server that stores critical information about the manufacturing process for a particular product and then configure computers to connect to that server to get the job done. The file server then accesses files that clients access via the clients’ browsers. A file server serves one simple function, while a cluster of computer servers can perform different tasks, for example, allowing a group of printers to communicate with one another to produce a large volume of printed materials.
A computer server must support a robust network infrastructure in order to provide its users with fast, reliable and efficient performance. File servers, in particular, rely heavily on high-speed internet connections to access their files quickly. Clients connecting via a dial-up modem will have to wait for a long time before they are able to access their files. Some servers are set up to automatically route fax messages, but this feature may not work for all kinds of fax machines. A computer server that handles fax transactions may also have a backup facility that enables it to recover from unexpected shut-down by clients. File servers should also be able to allow non-network computers connected to it to use its hardware and software.
Operating systems determine how a computer server is able to communicate with other systems. Modern operating systems such as Windows XP, Windows Vista, and Windows 7 can run most server applications. However, certain operating systems do not have support for some common server procedures such as file servers and web mail. In this case, an independent third party vendor may be necessary to fulfill the role.
An operating system also determines how well a computer server copes with failures of its drives. If the drive fails, the operating system must be able to recover data using a different storage medium. For instance, if the drive fails, the server may have to be backed up using a different storage media than usual.