When this story was originally posted, it contained inaccurate information regarding the Charlotte Observer\u2019s use of Virtual Iron.\u00a0 The story has been updated, and the error corrected.Virtual Iron and XenSource both are introducing new virtualization software to undercut on price the dominant player in the field, VMware.On Monday, Virtual Iron is set to start offering Version 3.1 of its enterprise-class virtualization platform for a license price of US$499 per socket, which is less than 20 percent of the $2,875 per socket price for a comparable VMware license, according to Virtual Iron.Virtual Iron argues that VMware\u2019s pricing is a barrier to more widespread adoption of virtualization in data centers, citing IDC research that only 6 percent of data center operators deploy any type of virtualization.Also Monday, XenSource introduced new and upgraded virtualization products, also at sub-$1,000 prices. Both XenSource and Virtual Iron build their proprietary products on top of the open-source Xen platform for virtualization hypervisors. A hypervisor is technology that makes it possible for one computer to run multiple operating systems at the same time. VMware\u2019s products are not based on open source.Virtualization refers to software and other system management tools that are used to better utilize servers. Virtualization makes it possible for one physical server to run multiple applications simultaneously. Advanced virtualization features include tools to seamlessly move computing workloads from one physical server to another, set up infrastructure and test new software.Revenue at VMware, a wholly owned subsidiary of storage vendor EMC, grew 86 percent in EMC\u2019s fiscal third quarter to $188.5 million. If that pace keeps up, VMware\u2019s annualized revenue would be $750 million, VMware said.Virtual Iron and XenSource intend to slow that pace."We are taking a very aggressive stand on pricing," said Mike Grandinetti, chief marketing officer for Virtual Iron. The Charlotte Observer newspaper in North Carolina uses Virtual Iron. It took 45 minutes to run a particular job on its legacy Unix-based servers, said Geoff Shorter, the Observer\u2019s IT infrastructure manager. Virtual Iron completed the same job in 11 to 13 minutes. The license for the high-end VMware product costs $5,750 to run on a dual-socket server, Shorter said. Virtual Iron\u2019s license is $499 per socket, so the total cost for a dual-socket machine license would be $998. Pricing for XenSource\u2019s XenEnterprise starts at for $488 for an annual subscription license for a dual-socket server or $750 for a perpetual license. XenServer for Windows, introduced Monday, sells for $99 per dual-socket server, per year. It has fewer features than XenEnterprise."Our intention is to dramatically shift the landscape under VMware," said Simon Crosby, XenSource\u2019s chief technology officer.Virtualization is following a classic economic model of an early mover dominating a market and charging a premium, soon followed by challengers competing on price, said Gordon Haff, principal IT advisor at Illuminata, a technology research company.Haff said enterprises that have deployed VMware are seeing a positive return on their investment despite the price and he doesn\u2019t think price alone is keeping enterprises from adopting virtualization."Even if virtualization software were free, it wouldn\u2019t become ubiquitous because of the complexity of the implementation," he said.-Robert Mullins, IDG News Service (San Francisco Bureau)Related Links:\n\nVMware Gets Performance MonitorCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage.