OS-level virtualizer ships with Linux for first time

TechWorld.com - Mandriva Corporate Server 4.0 is to include OpenVZ, and it's the first time that operating system-level virtualization software has been included as a part of the operating system, according to Linux distributor Mandriva.

Compared to VMware and para-virtualization technologies such as Xen, OpenVZ offers the least flexibility in the choice of operating system: both guest and host operating systems must be Linux. So if you're in a hurry to pack multiple versions of Linux into a server, this could be the one to choose.

However, OpenVZ's proponents claim that operating system-level virtualization provides better performance, scalability, density, dynamic resource management and ease of administration. According to the OpenVZ project, there's only a 1% to 3% performance penalty for OpenVZ compared to stand-alone servers.

The way it works is that each virtual machine -- or virtual environment in OpenVZ-speak -- uses the same operating system kernel, although from the point of view of its owner each looks like a physical server and is separated by system-level management software. OpenVZ is an open-source project based on SWsoft's Virtuozzo, which remains proprietary software.

Mandriva's independent software vendor manager Klara Mika said: "OpenVZ is also an excellent open-source project. By making it available more widely and easily as part of Mandriva Linux, we hope to widen the user community and help improve the integration of virtualization technologies into a standard Linux kernel."

"Embedding the OpenVZ technology directly into the Mandriva kernel will give Mandriva customers unparalleled virtualization functionality," said Kir Kolyshkin, manager of the OpenVZ project. "We're very pleased to work with Mandriva and make our technology widely available via the popular Linux distribution."