Server virtualization allows users to maximize physical resources in the most efficient way possible—server virtualization functions by running multiple, independent, virtual operating systems on a single computer. Server virtualization transforms hardware into software, creating a virtual hardware resource on an x86-based server that incorporates CPU, RAM, NIC, and hard drives.
Through consolidating, the number of physical servers can be significantly reduced. This alone brings benefits such as reduced floor space, power consumption, and air conditioning costs. However, it is essential to note that even though the number of physical servers is significantly reduced, the number of virtual servers to be managed does not change. Therefore, when virtualizing servers, the installation of operation management tools for efficient server management is recommended.
Server consolidation with virtualization reduces costs of hardware, maintenance, power, and air conditioning. Besides, it lowers the Total Cost of Ownership (TCO) by increasing the efficiency of server resources and operational changes, as well as virtualization-specific features. As a result of today’s improved server CPU performance, a few servers have high resource-usage rates, but most are often underutilized. Virtualization can eliminate such ineffective use of CPU resources, plus optimize resources throughout the server environment. Furthermore, because a single administrator can centrally manage servers managed by each business division’s staff, operation management costs can be significantly reduced.
Improve availability and business continuity
One beneficial feature of virtualized servers not available in physical server environments is live migration. With live migration, virtual servers can be migrated to another physical server for tasks such as performing maintenance on the physical servers without shutting them down. Thus there is no impact on the end-user. Another great advantage of virtualization technology is that its encapsulation and hardware-independence features enhance availability and business continuity.
Increase efficiency for development and test environments
At system development sites, servers are often used inefficiently. When each business division’s development team handles different physical servers, the number of servers can quickly increase. Conversely, when teams share physical servers, reconfiguring development and test environments can be time and labor-consuming. Such issues can be resolved by using server virtualization to simultaneously run various operating system environments on one physical server, thereby enabling concurrent development and test of multiple environments. Also, because development and test environments can be encapsulated and saved, reconfiguration is extremely simple.
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