VM

VM

What are the benefits of server virtualization?

 

Virtualization brings a wide range of technological and business benefits to the organization. Consider a handful of the most important and common virtualization benefits:


 

  • Server consolidation. Because virtualization enables one physical server to do the work of several servers, the total number of servers in the enterprise can be reduced. It's a process called server consolidation. For example, suppose there are currently 12 physical servers, each running a single application. With the introduction of virtualization, each physical server might host three VMs, with each VM running an application. Then, the organization would only require four physical servers to run the same 12 workloads.

 

  • Simplified physical infrastructure. With fewer servers, the number of racks and cables in the data center is dramatically reduced. This simplifies deployments and troubleshooting. The organization can accomplish the same computing goals with just a fraction of the space, power and cooling required for the physical server complement.

 

  • Reduced hardware and facilities costs. Server consolidation lowers the cost of data center hardware as well as facilities -- remember, less power and cooling. Server consolidation through virtualization is a significant cost-saving tactic for organizations with large server counts.

 

  • Greater server versatility. Because every VM exists as its own independent instance, every VM must run an independent OS. However, the OS can vary between VMs, enabling the organization to deploy any desired mix of Windows, Linux and other OSes on the same physical hardware. Such flexibility is unmatched in traditional physical server deployments.

 

  • Improved management. Virtualization centralizes resource control and VM instance creation. Modern virtualization adds a wealth of tools and features that give IT administrators control and oversight of the virtualized environment. As examples, live migration features enable a VM to be moved between two physical servers without stopping the workload. Data protection features, such as snapshots, can capture a VM's state at any point in time, enabling the VM to be recovered quickly and easily from unexpected faults or disasters. Virtualization lends itself well to centralized management, enabling admins to see all VMs in the environment and deploy patches or updates with less chance of mistakes.