Q&A: Virtualization to transform IT, says VMware founder
The founder of VMware discusses how virtualization could transform IT.
Computerworld - As founder and chief scientist at VMware Inc., Mendel Rosenblum has been in the thick of the development of virtualization technologies. He recently spoke with Computerworld's Robert L. Mitchell and discussed how virtualization is changing the IT landscape.
Mendel Rosenblum, founder and chief scientist at VMware Inc.
For each of these different techniques, you have some advantages and some disadvantages: What can it run? What performance does it run with? How confident are you of the isolation of the environment?
I could go with my VMware hat on and say [that] the hardware is the best place to do things, it has the strongest isolation and the most compatibility, and so on. But someone else would say, "Yes, but your virtual machines are quite large now because you have all the software on that compared to a Java applet that runs in a Java virtual machine." It really depends on the need.
The one place I feel very strongly about is when we start talking about security. Security is undermined by just a single bug, and the only way to avoid bugs is by making something very simple. That's one thing that distinguishes the hardware interface from these other virtualization layers that are out there.
Today, the killer application for virtualization in the enterprise is server consolidation. What will be the next one be? If you view [virtualization] as taking a bunch of machines and squeezing them onto a single machine, you're not using the real power of virtualization. A large percentage of the people who use our ESX product also use our VMotion technology to move virtual machines while they're running between physical boxes. The same technology that allowed them to do server consolidation now allows them to do things like load balancing across the different hardware platforms.
Now that I have a virtualization layer, what can it do for me to make [IT] run more manageably, more securely, more reliably? Once you have this technology, it will just be so useful for so many things that you won't even remember why you brought it in in the first place.
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