comment on this article

Keeping them apart!

How hypervisors help to handle multiple operating systems. By Graham Pitcher.

As diligent students of The Bible will know, there is nothing new under the Sun. So when a particular technical term suddenly gains currency, the more suspicious will often look to the history books.
Two such terms currently in circulation are ‘virtualisation’ and ‘hypervisor’. But would you be surprised to discover that both technologies have been around for many years? The word ‘hypervisor’, for example, is believed to have been coined in 1972, first appearing in documentation supporting a software upgrade to IBM’s System/370 mainframes.
So why is there now so much fuss about hypervisors? The answer is the emergence of multicore processors. And are the words ‘virtualisation’ and ‘hypervisor’ interchangeable? The answer, says Sebastien Marineau, vp of R&D for QNX, is no. “Virtualisation is simulating a process running on the same or different processors. A hypervisor, however, is a layer underneath an operating system which makes it look like there are multiple chips.”

Author
Graham Pitcher

Related Downloads
13811\Keeping Them Apart.pdf

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.