What exactly is virtualization??? You might be hearing the word in your day to day work. It is nothing but multiple servers running in a single server. Earlier, In most of the case, a single physical server is used to host one application. If we check the CPU , memory or any other components of the server, it will be below 10%. There is a lot of wastage happening in this case. Much of the resources are not utilized effectively by the server. So if we can split the server into many parts and install the OS and publish more than one application, we can effectively make use of the hardware.
Your answer to this question is Virtualization. The Virtualization will split the physical server into many parts which in turn will have many virtual sever.
The major players in this field are VMware, Microsoft, Citrix and Oracle.
1 ) Simplified Administration
With VMware ESXi Hypervisor VMware says that, you will be able to reduce the administration of the server ratio from 1:10 to 1:30. What does this mean? This means that you can either save time in your daily server admin tasks or be able to administer more servers by having VMware implemented. Let’s have a look at some examples of how by using VMware you can reduce your administrative burden:
- Centralized console will help you access your servers faster
- You can quickly mount CD/DVDs using ISO files
-Hot add of Hard disk, Ram, NIC etc
- You can quickly mount CD/DVDs using ISO files
-Hot add of Hard disk, Ram, NIC etc
2) Faster installation and deployment
Deploying a virtual machine is faster by either making a clone or a template of it. Or else if we are doing some major changes in an application, we can make use of snap shot or clone. This will act like the backup or image of a physical machine and revert back to the previous state when ever some failure occurs
3) Reduced Cost of the Infrastructure and increased CPU utilization
We can reduce space used in a datacenter. Using virtualization, we can have minimum 30 virtual servers in a single physical machine there by accommodating less space. This will help to save more power and there by promoting the go green concept. VMware has introduces a concept called distributed power management within which the host which are underutilized will be powered off after migrating the virtual machine to another host
- Increase hardware utilization by 50-70%
- Decreased hardware and software capital costs by 40%
- Decreased operating costs by 50-70%
- Decreased hardware and software capital costs by 40%
- Decreased operating costs by 50-70%
VMware works best for servers that aren’t resource intensive. But we all knows that this is true for many servers in most IT environments today.
4) Resource distribution, High availability and Fault tolerance
The biggest feature of the virtualization is high availability of the virtual machines. This will make sure that the virtual machines will have less or zero down time so that there wont be any disruption of service.
5) Converting, migrating gets easier in a few clicks
Now converting a physical machine into virtual become easier with addition of the converter applications available in the market. It will take some few clicks only. More over, we can migrate the virtual machines from one host to another.
