Virtualization or server platform virtualization refers to the creation of a virtual machine that acts like a standalone computer with an operating system. The host machine is the actual physical machine on which the virtualization takes place. The guest machine is the virtual machine. The words host and guest are used to distinguish the software that runs on the physical machine from the software that runs on the virtual machine. Leveraging this technology can be far less expensive than buying and operating traditional standalone servers.
Some of the key benefits of virtualization include:
- Cost benefits of hardware consolidation
- Lower cost for upgrades
- Technical simplicity
- High availability
- Enhanced server performance.
The portability of virtual machines enable more simplified upgrades, enhanced server failure restoration and a composite server structure that supports a superior disaster recovery methodology. Ultimately, virtualization dramatically improves the efficiency and availability of resources and applications in an organization. Instead of relying on the old model of “one server, one application” that leads to underutilized resources, virtual resources are dynamically applied to meet business needs without any excess.
When Centrality designs and deploys a virtualized server infrastructure, the compositions are such that business critical software executed on these virtual machines is separated from the underlying hardware resources. For example, a computer that is running Microsoft Server 2012r2 may host a virtual machine that looks like a server with the Microsoft Server 2008 operating system; other non Microsoft software can be run as a virtual machine. Since these virtual machines run in their own dedicated memory space and CPU processor cores can be dedicated to a specific virtual machine, virtual machines normally provide higher performance comparative to a stand-alone platform.
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