The biggest problem faced by the IT industry today is the tremendous cost incurred in purchasing, installing and maintaining the hardware required to run all the software systems. A major reason why companies often face the problem of housing and maintaining a high number of servers is because in most cases one server is used to run only a single application. Only 5 to 10% of the server’s capacity is used in such a way. However, to run any parallel application, a new server needs to be installed. This ultimately turns into a critical problem, especially for businesses which have limited resources at their disposal.
Server Virtualization is a process which takes care of this problem very effectively. The basic crux of the Server Virtualization process is to enable one server to handle multiple applications. Using a software called the Hypervisor, each server which is connected to the system will be able to run two or more applications concurrently. Moreover, it also ensures that the running applications get what they need by pooling together the CPU storage and other competing data.
With Server Virtualization, the number of servers used in a system can drop down to almost 1/10th or 1/20th of the original number. This simply means, that the task of 10 servers can be performed by only one server with the help of Server Virtualization. This is achieved by creating two concurrent layers of software and hardware on which the applications are running. The first layer is the hardware layer while the second is the virtualization layer. Ultimately, all applications run in isolated to each other which ensures maximum efficiency and smooth running of the applications.
Another added benefit of virtualization is that it takes a user much less time to launch a new application when all that needs to be done is to configure the application with the existing physical server rather than install an entirely new server set-up. Not only does this cut down the total cost of running a new application but also reduces and launch time to a few minutes as compared to the 2 or 3 weeks time it would generally take to set-up a new server.
To sum it up, the following are some of the major benefits of server virtualization:
- The number of hardware servers required is drastically cut down which helps the company save costs on the hardware.
- The amount of energy and HVAC consumption also reduces which helps in saving money on the power bills.
- Fewer number of servers require much less time, cost and personnel in carrying out maintenance activities.
- Launching new applications is made much easier and quicker since the new application only needs to be configured into the existing server system.