shougyin writes: For years, Linux has enjoyed much of its success as a replacement for Unix. Companies turned to Linux to replace Unix servers, or for new deployments within a Unix-heavy environment. Linux is still king there, but it's starting to encroach on Microsoft as well. Big companies are planning overwhelmingly (76.4%) to add more Linux servers in the next year, and less than half (41.2%) of the companies are planning to add Windows servers in the next year. Even more interesting, nearly half (43.6%) are actively planning to decrease use of Windows servers in the next year.