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Virtual Server Architecture Principle

Virtual Server

A virtual server is a portion of a web hosting server that is logically separate from the main server. The resources are shared among multiple logical partitions that are independent of one another and act as a single dedicated server with some exceptions, notably in the kernel, file system, and network interfaces.

The virtual server is a virtual machine from the standpoint of the operating system. For server virtualization, there are a variety of options:

  • Some, based on the insulation, use a common core, such as OpenVZ, which is based on solutions like as HyperVM or Virtuozzo, which provide good overall performance but limit the users’ operating system choices;
  • Others, such as XEN, which use para-virtualization, work more like hardware emulators, where each virtual machine can run any operating system.

The phrase virtual private server is applied to solutions based on insulation, while the term virtual server is applied to solutions based on para-virtualization, however the names are frequently a mix or amalgam. Virtual servers have a number of distinct benefits and drawbacks.

A book can be compared to a physical server. This book is made up entirely of white pages that stand alone. A virtual server will take up more or less pages depending on how much space it requires. However, because they are self-contained, different virtual servers can exist within the computer in an unrestricted manner.

The major purpose for partitioning a physical system into numerous virtual dedicated servers is to increase online security: if one of the programmes, such as Web server, becomes corrupted or has a problem, other applications on various virtual servers continue to function smoothly.

This minimises running expenses and the amount of physical servers required: it is also feasible to consolidate numerous virtual servers on a single physical server while maintaining total isolation between them, resulting in excellent security, and the configurations can be completely different. These capabilities no longer necessitate physical equipment or a separate physical web server, resulting in cost, usage, and room occupancy reductions.