Virtual Servers-yuanjiao

Software .panies are rapidly adopting virtualization technologies, having recognized the advantages of a software-based machine (virtual) over a physical one. A Virtual Private Server (VPS) denotes a virtual machine that is exclusive to a single user. A physical system, modified by special software be.es a virtual server for multiple users. Although it can share the same operating system resources, each user accesses only the resources assigned by the virtual server software to the user account. Only the memory and bandwidth the IT administrator makes available is usable by any particular user. Each virtual servers residing on a physical unit has the ability to run its own operating system, or to perform any operation a physical server could, including rebooting and backing up. All of these functions are ac.plished .pletely independently from any of the other virtual machines on the physical machine. Partitioning a single physical machine into many virtual machines has be.e .mon practice, especially now that the virtualization technology has matured. Processing power in todays .puters has similarly led the drive toward implementation of virtualization technology on an ever-growing basis. In some cases, the physical machine on which multiple virtual servers reside can act as an administrator to all virtual machines. In this case, it allocates or withholds resources according to the functionality required by each of virtual units. Since the end user can only access the resources assigned, he is usually unaware of the full resources available. Utilization and management of resources to maximum effectiveness is perhaps the most powerful advantage a virtual server has over a physical server. The end user experience in a fully virtualized environment is seamless, and unless he is made aware, he is likely to believe he is working on a physical machine. Virtualization is possible on almost all physical machines produced today, and the software ensures that each virtual machine is as independent as physical machines would be set inches or miles apart. If one machine crashes, it simply does not affect the other virtual machines residing on the physical unit. Similarly, data stored on the same hardware is not available to any of the other virtual units. Virtual servers are growing in popularity for both corporate and individual users. Sharing servers while still retaining independence greatly reduces costs and risks. Not only does it minimize the costs of hardware, but also it isolates the damage of a catastrophic failure to an individual virtual machine rather than to all of the machines on the physical unit. .panies who have not yet taken advantage of this technology should seriously consider it. About the Author: 相关的主题文章:

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