Benefits of Virtualization

Benefits of Virtualization

Before we talk about benefits, let's take a scenario of an organization and their infrastructure setup and drawbacks with ever growing physical machines.

Let's take a retail based company is operating throughout a country and have their infrastructure setup, in one data center. A number of existing servers they have, 1000.

Drawbacks:

Each server is not utilized by users/application to its fullest extent.
Power supply for each server. As servers increase, Costs to maintain those servers will increase.
For every new server, have to bother about the power supply, space.
It's hard or time-consuming to set up a new separate server with the similar capability or hardware configuration of the existing servers.
Backing up of servers and applications on a machine is the tedious job.
More human efforts needed for removing or expansion of servers.


With virtualization:

One machine hardware is shared by more than one virtual machine.Thereby utilizing the server to its full capability.
We can simply backup the entire OS with a click of a button.
We can create multiple virtual machines with the same configuration by simply cloning (A 2 mins job).
Physically as a number of servers are less, we save power, there by doing good for the environment.
Expand and reduce a VM configuration (RAM, Processors, Disk Drivers, Storage etc) with much ease. For example, we can allocate more RAM size to a VM without touching the hardware or reduce the RAM size, if VM is underutilized.
Backup and restore of virtual machines are very easy.
Overall server maintenance cost is reduced.