SWsoft last month announced upgraded open source software that it says enables customers to move a virtual server and its contents to a new physical server without service interruption.
The company takes a different approach to server virtualization than such competitors as VMware and Microsoft, whose products work at the hardware level, enabling multiple operating systems to run on a single physical machine. With the SWsoft product, called Virtuozzo for Linux 3.0, multiple virtual servers run on top of a single operating system. Its virtual servers are software files that include memory, I/O, configuration files and more.
With Virtuozzo for Linux 3.0, users can move virtual servers among physical machines without having to share storage, says CEO Serguei Beloussov.
The migration capability better positions SWsoft for enterprise data centres, analysts say. VMware, for example, has offered similar technology with VMotion for more than two years. “What these [companies] are doing now is…trying to increase the utilization of a single server to more value-added features,” says Scott Donahue, a vice-president at Tier 1 Research.