What Server farm is
A group of networked servers that are housed in one location in order to streamline internal processes, distributing the workload between the individual components. In other words, a server farm expedites computing processes by harnessing the power of multiple servers. The farms rely on load-balancing software that tracks demand for processing power from different machines, prioritizes the tasks, and schedules and reschedules them depending on the priority and demand that users put on the network. When one server in the farm fails, another can step in as a backup.
Combining servers and processing power into a single entity has been relatively common for many years in research and academic institutions. Today, more and more companies are utilizing server farms to handle the enormous amount of computerized tasks and services they require.
The meaning of Virtual hosting
Virtual hosting is affordable for individual people's Web sites (vanity pages) and small businesses because this technology allows many sites to share the same server (there could be hundreds or thousands of them). The important thing is that no one else has access to your directories. However, unlike dedicated hosting, virtual hosting tends to have more traffic (from the co-located sites) and therefore less bandwidth per site and slower downloads.
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