/ What is virtualization?

What is virtualization?

Celeste Stewart Virtualization is a technology where computer resources, typically in a networked environment, are pooled and shared. Using virtualization software, hardware such as the central processing unit, hard disks, and memory can be transformed into software, creating a “virtual machine.”

So, what’s the big deal about having a virtual machine? One computer can have several virtual machines - all of which can use different operating systems at any given time without interfering with the other virtual machines. This is powerful on a single computer but more so on a network. Companies are adopting virtualization as a means to get more out of existing hardware. Imagine not having to upgrade your computer systems every couple of years.

By pooling servers, networking, storage, and other resources, connected virtual machines can use the resources as needed. This translates into better resource allocation and reduced costs. As demand increases over time, capacity can be added instead of a complete overhaul of the entire computer network.

Virtualization is seen as a huge boon to businesses with huge networks. But it’s not just for large organizations. Virtualization technology is available for your personal computer. For example, VMware offers a product called VMware Workstation 6 for single computers. This product costs just under $200 (with a free 30-day trial available).

For example, if you currently have Windows XP but want or need the ability to run multiple operating systems, VMware Workstation 6 allows you do that - on a single computer or laptop. Rather than having an office filled with computers (one Mac, one Windows XP, one Windows Vista, and one Linux), you could instead create individual virtual machines on your computer, thus saving you hundreds, if not thousands of dollars in hardware. Each machine can run side-by-side for easy switching and even easier file sharing.

VMware also offers a free VMware player that allows you to run virtual machines on your computer for free. Of course, you have to have a virtual machine to play. Fortunately, VMware also has a marketplace where you can download VMware “appliances.” One such appliance is the Browser Appliance that allows you to browse the Internet in a virtualized window (using the VMware player). The advantage to browsing virtually is that any spyware or viruses picked up in this environment are isolated and kept from reaching your actual computer desktop!

Virtualization is making waves in the IT industry. Now, even home users can give virtualization a try.