Server virtualization allows users to maximize physical resources in the most efficient way possible, and functions by running multiple independent virtual operating systems on a single computer. Server virtualization transforms hardware into software, creating virtual hardware resources on x86-based servers that combine CPU, RAM, NIC and hard drives.
Through consolidation, the number of physical servers can be significantly reduced, which can bring several benefits such as reduced floor space, power consumption and air conditioning costs. However, it is important to note that although the number of physical servers has decreased significantly, the number of virtual servers managed has not changed. Therefore, when virtualizing a server, it is recommended to install an operation management tool for efficient server management.
Reduce TCO
Server consolidation with virtualization reduces hardware, maintenance, power and air conditioning costs. Additionally, it lowers the Total Cost of Ownership (TCO) by increasing server resource efficiency and operational changes, as well as virtualization-specific features. As a result of the current increase in server CPU performance, some servers have a high level of resource usage, but most are often underutilized. Virtualization can eliminate the ineffective use of CPU resources, and optimize resources across server environments. Furthermore, because one administrator can centrally manage servers managed by each business division staff, operations management costs can be significantly reduced.
Improve availability and business continuity
One of the advantageous features of virtualized servers that is not available in a physical server environment is live migration. With live migration, virtual servers can be migrated to other physical servers for tasks, such as performing maintenance on 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 increase availability and business continuity.
Increase efficiency for development and test environments
On system development sites, servers are often used inefficiently. When the development team of each business division handles different physical servers, the number of servers can increase rapidly. On the other hand, when teams share a physical server, reconfiguring the development and test environments can be time-consuming and labor-intensive. This problem can be solved by using server virtualization to run multiple operating system environments concurrently on a single physical server, enabling development and testing of multiple environments simultaneously. Moreover, because development and test environments can be encapsulated and stored, reconfiguration is extremely simple.
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