Red Hat and Novell, the two top Linux sellers, have only just begun building Xen virtualization software into their products. But they’re already planning to add a higher-level option. Xen is a ‘hypervisor’ that lets a single computer run several operating systems simultaneously, using an idea called ‘virtualization’. This enables companies to use a single server more efficiently – something that could save them money. Now ‘containers’, a higher-level virtualization approach that makes a single operating system look like many, is also getting traction.
also popularly used in FreeBSD jails – I wouldn’t run a live server without them.
It’s important to remember that Solaris Containers (Zones) are not the same thing as jails. A good post comparing some of the different solutions available for this was posted here a while ago:
http://uadmin.blogspot.com/2005/06/zones-vs-jail.html
This approach is closer to what Solaris is doing with Zones, right?
Yes, the containers the article is refering to is equivalent of a Solaris Zone. Solaris Containers not only virtualize, but allow an administrator to finely control resources used by an application within the container or containers.
See this for more information:
http://www.sun.com/software/solaris/ds/utilization.jsp#1
Waoo! it took time to Novell and Red Hat to realize the supperiority of OpenVZ and Vserver against Xen, when it comes to run a linux on linux (what Xen mostly does at the moment, anyway)
Hail to OpenVZ and Vserver.
The two are vastly different in technology and purpose. Your comparing apples to oranges. Both will have their place. And both are needed in Enterprise.
Yes, I totally agree. And that’s why I precised: “when it comes to run linux on linux”.
In this context, Xen loses interest over OpenVZ and VServer.