When was virtualization introduced

It turns out the x86 architecture has some nasty characteristics," Rymarczyk says. To run Windows in a VM on an x86 platform, VMware had to intercept "difficult" instructions and replace them, he says.

They have started going down a similar path to what we did in the s. While there was a clear need for virtualization on the mainframe in the s, the idea of building hypervisors for new platforms was "effectively abandoned during the s and s when client-server applications and inexpensive x86 servers and desktops led to distributed computing," according to a.

In the s and early s, x86 servers lacked the horsepower to run multiple operating systems, and they were so inexpensive that enterprises would deploy dedicated hardware for each application without a second thought, Rymarczyk says.

That's one of the reasons x86 virtualization has become so important, but it still lags significantly behind the technology available on IBM's mainframes and Power systems, in Rymarczyk's opinion. One reason is that with mainframes and Power servers, virtualization isn't an optional add-on — it's part of the system's firmware.

Simply creating VMs is just the tip of the iceberg, though. Live migration is a key enabler of cloud computing because it helps ensure high availability and gives IT pros extra flexibility in the deployment of VMs. While IBM is a major producer of x86 servers, Big Blue has no plans to develop its own x86 hypervisor. But IBM is trying to position itself as one of the leaders in using virtualization technology to make tomorrow's data center more scalable and efficient.

There's little reason [for IBM] to invest in trying to make money by building a better [x86] hypervisor. Where the real opportunity exists in adding value for data centers is much higher up the stack. IBM and VMware have advanced similar concepts that leverage virtualization technologies to aggregate data center resources into small numbers of logical computing pools that can be managed from single consoles.

Rymarczyk is working with IBM's Tivoli software team to develop architectures that will lead to more dynamic and responsive data centers.

It's largely management software that is going to make the difference. Here are the latest Insider stories. More Insider Sign Out. Sign In Register. Sign Out Sign In Register. For true portability of software, you needed some sort of software virtualization. Over the next several years the project was renamed several times, including names such as Oak, Web Runner, and finally in , the project was renamed to Java.

In Java was targeted towards the Worldwide web since Sun saw this as a major growth opportunity. The Internet is a large network of computers running on different operating systems and at the time had no way of running rich applications universally, Java was the answer to this problem.

In January At the time, there was no other language like Java. Java allowed you to write an application once, then run the application on any computer with the Java Run-time Environment JRE installed. Java works by compiling the application into something known as Java Byte Code. At the time you write your program, your Java code is not compiled.

Instead, it is converted into Java Byte Code, until just before the program is executed. Since the JRE compiles the software just before running, the developer does not need to worry about what operating system or hardware platform the end user will run the application on; and the user does not need to know how to compile a program, that is handled by the JRE..

Whenever a java application is run, it is run inside of the Java Virtual Machine. You can think of the Java Virtual Machine is a very small operating system, created with the sole purpose of running your Java application. You can write the application once, and run anywhere. At least that is the idea; there are some limitations. With increased complexity came expanding administrative costs driven by the need to hire more experienced IT professionals, and the need to carry out a wide variety of tasks, including Windows Server backup and recovery.

Thank you for participating in the discussion. If an IT manager was not hip to virtualization, I'd send her or him to this article before reading anything else. Very nice. Cloud computing is also an area of virtualization which is gaining a lot of popularity. Afkham Azeez. Besides the software mentioned in the article, I would recommend everyone check into the open source VirtualBox application.

Thanks for the Introduction. Here is another one I like. Very simple and to the point thetoptenme. The term "Vritualization" was first used by Flash Vos in their literature and patent applications for system virtualization in late 90's.

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Tell us what you think. Email me replies to any of my messages in this thread. Community comments. Watch thread. Nice breakdown! Like Reply. Back to top. Re: Nice breakdown! Really interesting and a basic stuff for one who wants to understand virtualization.