The fundamental promise of virtualization is that it breaks the lock between hardware and software, between the physical side of computing and the logical side. That lock, which most of us don’t even notice because we’re so accusomed to it, makes computing much more complicated, expensive, and inflexible than it needs to be.
Many big companies are today using virtualization to consolidate and automate their computer systems. Rather than being forced to dedicate stacks of hardware to particular applications, they can create, in essence, a multipurpose hardware infrastructure that can run all their applications, shifting resources among them as necessary. (That’s an overstatement, but it’s where virtualization is leading us.) That increases the capacity utilization of hardware enormously, reducing the amount of machinery you have to buy, and by greatly simplifying the deployment of the hardware, it also reduces the number of people you have to employ to run your systems.
But virtualization can bring benefits to individuals as well. It promises, in fact, to make “personal computing” considerably more personal by separating what you do on your PC from the PC itself. For a preview of what that means, consider the personal virtualization software MojoPac, which the Financial Times tech columnist, Paul Taylor, reviews today. MojoPac, as Taylor explains, “lets you safely and securely separate software applications, files and settings from a PC and put them on to any USB device, such as an iPod, mini portable drive or flash memory stick. Instead of lugging a computer around, you load your desktop on to a pocket device. When you reach your destination, you plug it into [a PC] and your familiar home set-up is instantly in front of you.”
MojoPac, like other similar products, has its limitations, but in Taylor’s tests it worked admirably well. “I am impressed,” he writes.
In MojoPac, we begin to see what happens to personal computing when it becomes separated from the personal computer. As storage devices get smaller, more capacious, and cheaper and as virtualization technologies advance, we’ll be able to carry our entire computing setup around on our keychain – including all our applications, data, and settings. Whenever we need to use a computing device, whether a PC, a mobile phone, a music player, a TV, or some nifty future gadget, we’ll plug in a little drive and – voila! – our personal setup will appear instantly. At the level of software, which is the level that matters for us, we’ll have just one device, even though it will take many physical forms. This won’t kill the PC, but it will make it far less important, far less central, than it has been.
But that’s only the start. Ultimately, we probably won’t even need a little storage drive to carry our setup around with us. All the required information will sit in a utility data center out on the Internet somewhere, in the “cloud,” and it will be served up automatically to whatever machine we happen to be using at any given moment. We’ll access it with a smartcard, or a password, or maybe a thumb print or a voice command. Our “PC” will float around with us, weightlessly, forever at our beck and call.